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SECTION 71 ELECTRICAL

[endnoteRef:1] [endnoteRef:2] [endnoteRef:3] [endnoteRef:4] ELECTRICAL GENERAL JOB SPECIFICATIONS NORTH AMERICA [1: 20-MAY-2016; MOC 2016-05-10-133122-U374149; Supersedes Issue Date 25-NOV-2014; Reviewed. Aligned with G7D-0041-02 for consistency where common technical approaches can be used. Changed MET Flex Category to L2.] [2: 25-NOV-2014; MOC 2014_N/A; By: Brittany Lopez; Supersedes Issue Date 17-MAR-2014; Corrected two minor typos.] [3: 02-AUG-2007; MOC 2007_05174; By: Mick Bayer; Supersedes Issue Date 27-JUN-2007; Major updates to Sections 71.6 and 71.9.3.2 Deleted references to EMP and COM; added definition of Wire and Cable Management; added paragraph about electrical CFM must be purchased from Dow approved suppliers and defined those suppliers; added wording about MV cable accessories must be certified.] [4: 20-DEC-2006; MOC 2006_04425; By: Rao Katikaneni and Mick Bayer, Supersedes Issue Date 20-AUG-2006; Complete rewrite to consolidate all North American Site Specific Job Specifications into one overall Job Specification for all North American Sites. Converted all referenced EMETL practices into hyperlinks.]

TABLE OF CONTENTS

71. Electrical

71.1 Electrical Safety

71.2 Drawings

71.3 Standards and Codes

71.4 [endnoteRef:5]Hazardous (Classified) Areas [5: 31-Mar-2010; MOC 2010_08541; By: Gary Johnson; Supersedes Issue Date 17-Feb-2010; Removed the word 'Electrical' from Hazardous (Classified) Areas.]

71.5 Electrical Enclosure Requirements

71.6 Workmanship

71.7 Materials

71.8 Grounding and Lightning Protection

71.9 Wiring Methods, Raceways, and Cable Trays

71.10 Wire, Cable, Power Terminations, and Splices

71.11 Demolition and Abandoning of Wire and Cable Systems

71.12 Bus Duct and Cable Bus

71.13 Motors

71.14 Motor Control Centers (600 V and 5 kV Class)

71.15 Switching and Power Panelboard Equipment

71.16 Power Transformers

71.17 Switchgear (600 V and 5/15 kV Class)

71.18 Lighting, Receptacles and Branch Circuits

71.19 Electrical Heat Tracing

71.20 Communication, Monitoring and Warning Systems

71.21 Power Electronics

71.22 Underground Cable Installations

71.23 Packaged Equipment and Supporting Infrastructure

71. ELECTRICAL

71.1. Electrical Safety

71.1.1. The Safety Requirements of The Dow Chemical Company Electrical Safe Work Standard shall be adhered to and utilized by all employees, all trade crafts, any general contractor, any sub-contractor or visitor.

71.1.2. All contract and sub contract employees shall be provided any training necessary to meet the knowledge and skill requirements of The Dow Chemical Company Electrical Safe Work Standard by their employer.

71.2. DRAWINGS

71.2.1. The electrical plan drawings are diagrammatic and do not necessarily indicate exact and complete routes of raceways and wiring. The conduit, wire, and cable shall be field routed between equipment and devices in accordance with the governing codes and specifications. When conduit and wire or cable size is not specified, the Contractor shall size conduit and wire to meet the minimum requirements of the governing codes.

71.2.2. Drawing dimensions labeled as "approximate" may require field verification. They do not alleviate the need for the Contractor to determine exact dimensions for installation purposes.

71.2.3. Electrical drawings do not necessarily show equipment not requiring work under the electrical section of this contract. The Contractor should be aware that field verification for this equipment shall be required to avoid interferences.

71.2.4. Electrical drawings do not necessarily show conduit, wire or cable, and other work required for Instrument installation. In addition to these Job Instructions, refer to Instrument drawings and specifications for this work.

71.2.5. The Contractor shall coordinate with the Owner's Representative to ensure any field changes are documented on a master set of drawings. The Contractor is responsible for maintaining the master set. This copy shall be given to the Owner's Representative at the completion of the contract so that a copy of this set can be forwarded to the Project Engineer.

71.3. STANDARDS AND CODES

71.3.1. The Electrical installation and all materials shall conform to the current issue of the following Standards and Codes, unless amended by the drawings or these specifications. Should conflicts exist between these codes, the precedence (in decreasing order) shall be as follows:

71.3.1.1. State/Provincial and Local Electrical Codes

71.3.1.2. American National Standards Institute (where adopted)

71.3.1.3. National Electrical Manufacturers Association

71.3.1.4. National Electrical Testing Association

71.3.1.5. United States

71.3.1.5.1. National Electrical Code

71.3.1.6. Canada

71.3.1.6.1. Canadian Electrical Code

71.3.1.6.2. Canadian Standards Association

71.3.1.6.3. Canadian Electrical Manufacturers Association

71.3.2. Contractor shall refer to the Owner’s Representative regarding Dow Chemical Corporate Safety and Loss Prevention Principles and/or Site specific Safety Standards.

(Note: User shall contact the Project Engineer and Owner’s Rep to issue applicable standards/safety manuals)

71.4. HAZARDOUS (CLASSIFIED) AREAS

71.4.1. The Contractor shall ensure that materials and installation methods in hazardous areas comply with the requirements of the Class, Division, and Group or Zone area classification.

71.4.2. For this project the area classification shall be as defined on Hazardous Area Classification drawing(s) for the work area. Equipment maximum surface temperatures (T-CODES) are found in NFPA70 (NEC) TABLE 500.8(C).

71.5. ELECTRICAL ENCLOSURE REQUIREMENTS

71.5.1. When a NEMA enclosure type is not specifically defined in material specifications or drawings, electrical enclosures installed under this contract shall meet the minimum NEMA designation for the area in which they are being installed.

71.5.1.1. Use NEMA or CSA Type 4X for all outdoor installations, unless otherwise specified or mandated by electrical hazardous area classification requirements.

71.5.1.2. Obtain Owner’s Representative approval before installation.

71.5.1.3. Junction boxes for general purpose use in protected, non-corrosive areas shall be NEMA or CSA Type 1, general purpose, enclosures without knockouts and with screw secured covers.

71.5.1.3.1. A protected area is typically an indoor atmospherically controlled area or in a covered area without direct exposure to the weather and with low humidity.

71.5.2. Junction boxes and terminal boxes shall be mounted nominally at a height of 1-1.5 m (3-5 ft) above grade or platform to top of box with a maximum height of 2 m (6 ft). Junction boxes and terminal boxes shall be accessible. Doors must be able to be opened 90 degrees with clear working clearances, based upon the highest operating voltage, which can be maintained per EWP-30.

71.5.3. In process areas and outdoors, conduit or cable gland entries to enclosures are equipment shall be from the bottom or side. Top entries are not allowed unless specifically called for elsewhere in this specification. Exception may be made with written approval from the Owner’s Representative.

71.5.4. Fasten enclosure(s) firmly to walls and structural surfaces ensuring that they are permanently and mechanically anchored.

71.5.5. When drilling or punching holes into an enclosure that houses or will house electrical components, the Contractor shall ensure that no metal or plastic shavings nor filings fall into the electrical components or are left inside the enclosure.

71.5.5.1. This may require the use of vacuums, barriers or other means to ensure all shavings or filings are kept from falling on electrical components and are removed from enclosures.

71.5.5.2. The Contractor shall ensure all applicable procedures and permits have been obtained prior to drilling in energized enclosures.

71.6. WORKMANSHIP

71.6.1. Workmanship shall be as specified in the individual practices of the electrical section of this contract.

71.6.2. The Contractor shall provide to the Owner’s Representative for his approval, a written procedure for any work on ‘in service’ electrical equipment. The proposed work procedure shall include the estimated time required to complete the work.

71.6.3. Circuit wiring needing to be identified or deenergized shall be addressed to or by the Owner’s Representative for corrective action.

71.6.4. Electrical work will be considered ready for acceptance when the system is complete, undamaged, dry, clean, free from moisture and corrosion and ready for operation.

71.6.5. The positions of equipment indicated on drawings are only approximate; scaling or dimensions may be used for estimating purposes. Existing equipment shall only be removed or relocated with the written approval of the Owner’s Representative. Work on or at existing equipment shall only be carried out with a written approval of the Owner’s Representative.

71.6.6. Areas directly over pumps, compressors and similar mechanical equipment shall be kept clear of cable tray, conduit, etc., to the greatest extent possible for future maintenance access.

71.6.7. Cutting, grinding, or scraping of fire proofing to attach equipment/pipe hangers, supports, brackets, etc will require the use of PPE. Consult fire proofing contractor for appropriate level of protection.

71.6.8. Trade contractors shall coordinate with fireproofing contractor for field touch-up work.

71.6.9. There shall be no drilling or modification of structural steel without Owner’s Representative approval.

71.6.10. There shall be no welding on equipment such as vessels, tanks, skids, etc. without Owner’s Representative approval.

71.6.11. Fire protection schemes may be armed during the final stages of construction for a new facility. Avoid conditions that would trip the smoke or heat detection heads.

71.6.12. Every effort should be made to avoid liquid pathways into electrical equipment and or panels. Install cabling in a way that liquids drop off prior to entering the building preventing it from reaching any electrical components.

71.6.13. No drilling of structural steel for mounting of electrical equipment unless instructed by design.

71.6.14. Contractors engaged with performing welding of supports shall be certified in accordance with AWS D1.1, section 4, Part C. The minimal acceptable qualifications shall be Fillet tests, in the 3F and 4F positions.

71.6.15. Keep on file worker qualification records (WQR). These may be requested and then provided to the Owner’s Representative prior to work beginning.

71.6.16. A minimum headroom of 7’6" (2.3 m) shall always be maintained over walkways.

71.6.17. General methods of routing cable trays, conduit, piping and structure steel to rotating equipment, (i.e. motors, vibration and temperature sensors, seal pots, etc.) and local distribution panels, should be reviewed with the Owner’s representative to ensure readily access of raceway openings and equipment, and to ensure access for equipment removal is provided.

71.6.18. The Contractor shall transport the Owner Furnished equipment and material from the storage area or warehouse to the location designated on the drawings and specifications. The storage area or warehouse location is noted in Section 5. The Contractor shall ensure that the equipment leaves the storage area and arrives at the designated location clean and free of damage.

71.6.18.1. Contractor to use the Manufacturer’s lifting devices & lifting instructions to transport the equipment sections, where applicable.

71.6.19. Any material or equipment damaged during transportation or installation shall be inspected by the Owner’s Representative prior to the Contractor initiating repair work. The Owner’s Representative shall determine the corrective action.

71.6.19.1. The Contractor shall visually inspect OFM equipment and materials before beginning any work. Any concerns shall be reported to the Owner’s Representative before beginning work.

71.6.20. Concealed work shall be left open for inspection and testing until approved by the Owner’s Representative.

71.6.21. Repair of damaged galvanizing on drilled holes on angle/channel supports or cut conduit and conduit threads shall be by hand brushing ZRC cold galvanizing [endnoteRef:6]or applying two coats of a zinc-rich cold galvanizing spray compound on the same day the damage occurs. The Contractor shall ensure the damaged area to be repaired is clean, dry and prepared per the Manufacturer’s instructions, prior to being coated. If the repair is not done on the same day the damage occurs, the Contractor shall repair the damaged galvanizing in accordance G16S020501. [6: 05-DEC-2011; MOC 2010_08868; By: Duane Boswell; Supersedes Issue Date 28-Sep-2011; Updated to include use of Zinc-rich cold galvanizing spray compound for repair of damaged galvanizing on cut conduit.]

71.6.21.1. Consult with the Owner’s Representative for which repair solution is acceptable.

71.6.21.2. Brushed on ZRC cold galvanizing shall not be used for the repair of welded or burned surfaces of any kind. Repair of these surfaces shall be per Specification G16S020501.

71.6.22. All equipment and materials shall be installed per the Owner's engineering drawings and specifications and the Manufacturers’ instructions. Any conflicts which arise between these documents shall be brought to the attention of the Owner’s Representative. If no Owner drawings and specifications exist then the Manufacturer’s instructions shall be used.

71.6.22.1. All bus bar splice connection joints and other bolted connections shall be torqued in accordance with the Manufacturer’s specifications. If Manufacturer’s instructions are not available, torque connections shall be in accordance with Specification G7M-0020-26.

71.7. MATERIALS

71.7.1. Electrical materials and equipment are either Owner Furnished (OFM) or Contractor Furnished (CFM).

71.7.2. All electrical equipment, materials, devices, hardware, and supports shall be Contractor Furnished (CFM) except for those items that are specifically indicated as Owner Furnished (OFM) on drawings or specifications.

71.7.3. Refer to Section 5 of the Job Specification, Electrical Equipment Schedule, Owner Furnished Material List, and drawings to determine which items are identified as OFM.

71.7.4. See Electrical Equipment Schedule, supplier documents, or Owner Furnished Material List for weights of large equipment (i.e. transformers, switchgear, large cable reels).

71.7.5. The storage areas or warehouse locations for OFM is noted in Section 5 of the Job Specifications.

71.7.6. If specified in the Job Specifications, Owner Furnished wire and cable materials will be provided via the Wire and Cable Management work process. See Owner Furnished Material list for type and quantity of cable materials provided.

71.7.6.1. The Contractor shall release OFM materials from the wire and cable supplier’s warehouse. Releases shall be placed for “just-in-time” delivery. Releases shall be by email or fax. Phone releases are not allowed.

71.7.7. Miscellaneous conduit, electrical equipment support brackets and miscellaneous steel [endnoteRef:7]when specified as Hot Dipped Galvanized shall be in accordance with Specification G16S-0205-03 and ASTM A-123. [7: 05-DEC-2011; MOC 2010_08868; By: Duane Boswell; Supersedes Issue Date 28-Sep-2011; Clarifies for when a material is specified as ‘Hot Dipped Galvanized’.]

71.7.8. Bolts, nuts, rings and washers [endnoteRef:8]when specified as Hot Dipped Galvanized shall be in accordance with Specification G16S020503. [8: 05-DEC-2011; MOC 2010_08868; By: Duane Boswell; Supersedes Issue Date 28-Sep-2011; Clarifies for when a material is specified as ‘Hot Dipped Galvanized’.]

71.7.9. Contractor Furnished Materials (CFM)

71.7.9.1. CFM shall be as specified in each practice of this specification. Where no specific requirements are made, materials shall be new, free of defects, and shall be approved by a nationally recognized testing laboratory, inspection agency, or other organization concerned with product evaluation as part of its listing and labeling program.

71.7.9.2. The Contractor shall procure their bulk electrical CFM and wire and cable CFM from an acceptable electrical distributor shown in the paragraph and sub paragraphs titled, “Acceptable Manufacturers and Suppliers”, herein.

71.7.10. Acceptable Manufacturers and Suppliers

71.7.10.1. Manufacturers and suppliers of electrical equipment and materials shall be in accordance with Specification G7D000100 (Recommended Electrical Equipment List) and those specifications referenced therein and as specified on the drawings, schedules, and elsewhere herein.

71.7.10.2. Manufacturers and suppliers of electrical equipment and materials shall be as specified on the drawings, schedules, Section 5 of the Job Specification, or elsewhere herein.

Select one of the above paragraphs

71.7.10.3. [endnoteRef:9]Acceptable electrical distributors for CFM: [9: 17-FEB-2010; MOC 2010_08366; By: Gary Johnson; Supersedes Issue Date 16-SEP-2009; Removed note regarding manufactures & suppliers of Fire Detection Systems.]

71.7.10.3.1. [endnoteRef:10]Bulk electrical: [10: 17-MAR-2014; MOC 2014_14462; By: Gary Johnson; Supersedes Issue Date 17-FEB-2014; Updated MRO Bulks Supplier for Louisiana.]

Site

State

Distributor

Other

Various

WESCO

Gulf Coast

TX & LA

Summit

71.7.10.3.2. Wire and Cable: All wire and cable products shall be procured from Anixter Wire and Cable.

71.7.10.3.2.1. Exception: The Contractor is allowed to procure small quantities and short lengths (up to 1000 ft, each per size and color per week) of the following cables from the acceptable bulk electrical distributors, with approval of the Owner’s Representative.

71.7.10.3.2.1.1. Building wire up to size #2 AWG (600 V Dow Codes A, A5)

71.7.10.3.2.1.2. Grounding/bonding wire up to size #2 AWG (600 V Dow Code A1)

71.7.10.3.2.1.3. Control tray cable – 2/c, 3/c, 4/c (600 V Dow Codes C, C1)

71.7.10.3.2.1.4. Instrument tray cable – 1 PR, 1 TR (600 V Dow Code IC1, 300 V Dow Codes E1, E2)

71.7.10.3.2.2. Exception: The Contractor may procure pole line messenger and pole line ground wires from the acceptable bulk electrical distributors.

71.7.11. Labeling of Equipment and Raceways

71.7.11.1. Identification labels shall be in accordance with the following table, unless otherwise indicated in the specifications or drawings. Equipment nameplates shall be affixed in a prominent location on the front of the panel.

Table 71.7

Category

Label Material

Label Size

Label Attachment Method

Lettering Color and Size

Ground wire stub-ups,

Conduit,

Outdoor luminaires,

Cold lead of heat tracing loop

Stamped Brass or stainless steel

1.25 to 1.50 in (32 – 38 mm) diameter

Silicon bronze or stainless steel wire

As required to fit data on label. 0.375 in (10 mm) preferred

Insulation cladding over electrical heat tracing circuits, “CautionElectric Traced”

Weather proof plastic

As needed to fit data on label

Stainless steel hardware or two part outdoor epoxy or Silicon bronze or stainless steel wire

Minimum 0.5 in (13 mm) letters

Indoor switches and receptacles

Indoor luminaires

Adhesive label – background color to match cover or be transparent

As required to fit data on label

Adhesive on label or double sided foam tape

White or black, as required to fit data on label. 0.125 in (3 mm) preferred

Outdoor switches and receptacles

Communication speakers and handsets

White Engraved Laminated phenolic or Stamped Brass


Stainless steel hardware or outdoors: outdoor two part epoxy or indoors: pre-applied adhesive

As required to fit data on label. 0.125 in (3 mm) preferred. Black letters if engraved laminated phenolic

All Equipment or Enclosures with more than one source of power

Red Engraved Laminated phenolic



White

0.5 in (13 mm) for CAUTION

0.25 in (6 mm) for Power Sources

Motor Control Center (MCC)

Switchgear

White Engraved Laminated phenolic


Stainless steel hardware or pre-applied adhesive

Black 1 in (25 mm) letters

MCC cubicles


Per G7C-0702-07

Stainless steel hardware or pre-applied adhesive

Per G7C-0702-07

Motor control field control stations


Per G7C-0702-07


Per G7C-0702-07

Power Transformer (Tag)



Stainless steel hardware or two part outdoor epoxy

Black 2 in (50 mm) letters

Power Transformers (Danger) on Fence or Barrier

Weather proof plastic

14 in x 20 in

Stainless steel hardware or two part outdoor epoxy or Silicon bronze or stainless steel wire

Sign manufacturer’s standard

Miscellaneous equipment

Junction boxes

Automatic transfer switches

Switching and Panelboard Equipment


Per G7C-0702-06


Black letters per G7C-0702-06

[endnoteRef:11]Cable Tray Systems [11: 28-SEP-2011; MOC 2011_10362; By: Gary Johnson; Supersedes Issue Date 30-MAR-2011; In table 71.6, added weatherproof self-adhesive labeling as the preferred method for cable tray tags.]

Weatherproof self-adhesive plastic tape or labels

Alt: White Engraved Laminated phenolic


Self-Adhesion for labels and tape

Alt: Stainless steel hardware or two part outdoor epoxy

Black 3 in (75 mm) letters, minimum for Voltage listings

Industry standard lettering for Warning Labels

Cables in Manholes



Plastic cable ties if attached to cables

Stainless steel hardware if attached to wall above the duct

0.375 in (10 mm) minimum

71.7.11.2. Equipment or enclosures with more than one source of electrical power shall have a nameplate identifying the multiple sources of power.

71.7.11.2.1. The top line of the nameplate shall be the word ‘CAUTION’.

71.7.11.2.2. The second line shall be “Multiple Power Sources”

71.7.11.2.3. Subsequent lines shall be the tag names of the power sources.

71.7.11.3. [endnoteRef:12]Electrical equipment as referenced in NEC Article 110 shall be field marked with appropriate arc flash hazard labeling. Refer to Owner’s Representative for specific site requirements. [12: 05-DEC-2011; MOC 2010_08868; By: Duane Boswell; Supersedes Issue Date 28-Sep-2011; Added paragraph for appropriate arc flash hazard labeling per NEC article 110.]

71.8. GROUNDING AND LIGHTNING PROTECTION

71.8.1. Scope of Work for Below Grade Grounding work

71.8.1.1. The Contractor shall install below grade electrical grounding and bonding as indicated on drawings including, but not limited to, the following:

71.8.1.1.1. Install ground electrodes and/or ground grid

71.8.1.1.2. Install ground wire stubup wires as shown on drawings

71.8.1.1.3. Install ground pads as shown on drawings

71.8.1.2. [endnoteRef:13]Coordinate Cathodic Protection below grade work jointly with Grounding below grade work. Refer to Section 71.23. [13: 17-MAR-2014; MOC 2014_14462; By: Gary Johnson; Supersedes Issue Date 17-FEB-2014; Defined Cathodic Protection below grade installations to be aligned with Grounding installation below grade work.]

71.8.2. Scope of Work for Above Grade Grounding work

71.8.2.1. The Contractor shall install and connect above grade electrical grounding and bonding as indicated on drawings including, but not limited to, the following:

71.8.2.2. Building grounding

71.8.2.3. Equipment grounding

71.8.2.4. Piping grounding

71.8.2.5. Vessel grounding

71.8.2.6. Lightning protection

71.8.2.7. Static protective devices

71.8.2.8. Transformer neutral grounding system

71.8.2.9. Raceway & Cable Tray grounding

71.8.3. Workmanship

71.8.3.1. Grounding work shall be planned and coordinated with other trades so interferences can be avoided and grounding work can be completed on time.

71.8.3.2. Ground connections shall be made as soon as equipment or structure is available and before any electrical equipment is energized.

71.8.3.3. The Contractor shall verify that any installed ground wire is kept clear of traffic areas during construction to avoid trip hazards.

71.8.3.4. Below grade grounding system shall be buried as soon as practical. [endnoteRef:14]A documented visual inspection of the below grade grounding system per G7M-0111-01 shall be performed prior to backfill or burying the installation. [14: 04-NOV-2008; MOC 2008_06787; By: Duane Boswell; Supersedes Issue Date 11-JUN-2008; Updated paragraph 71.8.3.3 to document underground inspection of grounds prior to backfill.]

71.8.3.5. Above ground connections shall be made as soon as equipment or structure is available and before any electrical equipment is energized.

71.8.3.6. Ground connections shall be made with compression connections, unless otherwise specified.

71.8.3.6.1. Compression connectors shall be installed using only matched dies and lugs as specified by the manufacturer

71.8.3.7. Exothermic welds performed shall be made in strict compliance with the Manufacturer’s installation instructions. Procedures shall be reviewed with the Owner’s Representative before commencing thermal weld work.

71.8.3.8. When installed with 1/c power cables, the equipment grounding conductor shall be connected to and run from the load to either the power source ground bus or the common equipment grounding conductor in the cable tray system, as indicated on the drawings or cable schedule. When installed with 1/c power cables, the equipment grounding cable shall be attached to its respective power cables with [endnoteRef:15]weather-resistant cable ties. [15: 28-SEP-2011; MOC 2011_10478; By: Gary Johnson; Supersedes Issue Date 30-MAR-2011; Replaced "black-propylene weather resistant" with "weather resistant".]

71.8.3.9. The Contractor shall maintain smooth, longradius bends in all grounding conductors and keep conductors as short as possible, especially for grounding conductors for junction boxes, instrument cable shields, and electronic equipment.

71.8.3.10. [endnoteRef:16] Prior to making connections, clean any insulating medium such as grease, paint, dirt, oxide, from the surfaces. Touch up paint or galvanizing after making the connection. (Note: Thermal welds are not typically used and should only be installed when required/authorized) [16: 04-NOV-2008; MOC 2008_06787; By: Duane Boswell; Supersedes Issue Date 11-JUN-2008; New paragraph 71.8.3.9 to clean area before attaching a ground.]

71.8.3.11. Lightning Protection

71.8.3.11.1. The Contractor shall minimize sharp bends in lightning protection wiring and keep conductors as short as possible.

71.8.3.11.2. Protective conduits for lightning protection wires shall be of plastic or non-ferrous material.

71.8.4. Material Specifications

71.8.4.1. All components shall be listed by the Manufacturer as suitable for grounding.

71.8.4.2. Equipment ground conductors and other insulated ground conductors shall be Dow Code A1. See specification G7C040101 for a cross reference of Dow Cable Codes and specification numbers.

71.8.4.3. Noninsulated (bare) ground conductors shall be Dow Code A2.

71.8.4.4. Ground wire stubups shall be individually labeled in accordance with Table 71.7.

71.8.4.4.1. The data on the labels shall be per the plant’s ground naming convention, in accordance with the Owner’s Representatives instructions. If no plant ground naming convention exists, the label data shall be the name of the equipment being grounded (i.e. motor, pipe support, etc.) and a sequence number if more than one (i.e. MP101A1, MP101A2, etc.).

71.8.4.5. Protective conduits for ground wires shall be of plastic or nonferrous material.

71.8.4.6. Equipment grounding conductors shall be sized per G7C010200 unless otherwise indicated on the drawings or cable schedule.

71.9. WIRING METHODS, RACEWAYS AND CABLE TRAYS

71.9.1. Scope of Work:

71.9.1.1. Install the following raceway and cable tray systems as shown on the drawings and specified herein including, but not limited to:

71.9.1.1.1. Rigid Metal Conduit

71.9.1.1.2. Rigid Nonmetallic Conduit

71.9.1.1.3. Electrical Metallic Tubing (EMT)

71.9.1.1.4. PVC Coated Galvanized Rigid Steel Conduit

71.9.1.1.5. Flexible Metal Conduit

71.9.1.1.6. LiquidTight Flexible Metal Conduit

71.9.1.1.7. Flexible Couplings

71.9.1.1.8. Nonmetallic conduit (ENT)

71.9.1.1.9. Galvanized Steel Cable Tray

71.9.1.1.10. Aluminum Cable Tray

71.9.1.1.11. Fiberglass Cable Tray

71.9.1.1.12. Basket Cable Tray

71.9.1.1.13. Channel

71.9.1.1.14. Surface Metal Raceway

71.9.1.1.15. Nonmetallic Surface Raceway

71.9.1.1.16. Barriers (dividers) in cable tray

71.9.1.2. The Contractor shall install the fire stop material and systems including, but not limited to, the following:

71.9.1.2.1. Wall/Floor Penetrations

71.9.1.2.2. Mounting Channel

71.9.1.2.3. [endnoteRef:17]Fire Seal Bags/Fire Pillow Blocks [17: 17-FEB-2010; MOC 2010_08366; By: Gary Johnson; Supersedes Issue Date 16-SEP-2009; Added Fire Bags/Pillow Blocks.]

71.9.1.2.4. MultiCable Transit, MCT, Frame

71.9.1.2.5. MCT Block/Modules in MCT Frame

71.9.1.2.6. Fireproof Spray Coating on cable

71.9.1.2.7. Cable Tray Fire Shield

71.9.1.2.8. Fire Seal Bags

71.9.1.2.9. [endnoteRef:18]Repair of openings and penetrations in existing Fire Stop foam barriers per G7C033107 [18: 27-JUN-2007; MOC 2007_05013; By: Joyce Blom; Supersedes Issue Date 20-DEC-2006; Deleted existing para 71.8.1.2.8. Renumbered 71.8.1.2.9 to 71.8.1.2.8 and modified the paragraph.]

71.9.2. Workmanship

71.9.2.1. Supports

71.9.2.1.1. All raceways and cable tray supports shall support 1.5 times the weight of the system.

71.9.2.1.2. All painted supports shall be primed and painted according to painting specifications found under Section 16 "Painting".

71.9.2.1.3. Support or strut channel The Contractor shall install the channel opening facing in the down position. Threaded hangers shall use double nuts.

71.9.2.1.4. If cutting and welding is used to fabricate and attach supports, these supports shall be cleaned and primed. Prior to the completion of the contract the supports shall be finish painted according to painting specifications found under Section 16 "Painting" and the drawings.

71.9.2.2. Conduit Installation (Note: User shall edit the following)

71.9.2.2.1. Conduit installations shall be in accordance with the following:

71.9.2.2.1.1. Rigid Galvanized Steel – G7C031101

71.9.2.2.1.2. Aluminum – G7C031102

71.9.2.2.1.3. Rigid PVC – G7C031103

71.9.2.2.1.4. Plastic Coated Rigid Galvanized Steel – G7C031104

71.9.2.2.1.5. Flexible Metallic – G7C031105

71.9.2.2.1.6. EMT – G7C031106

71.9.2.2.1.7. ENT – G7C031108

71.9.2.2.2. All raceway shall be run parallel or perpendicular to walls, ceilings, or structural members. Conduit shall not interfere with the use of aisles, passageways, doorways, overhead cranes, monorails, process valves, equipment removal areas, or working areas. In no case shall routing present a safety hazard or interfere with normal plant operating procedures.

71.9.2.2.3. [endnoteRef:19]General methods of routing raceways to rotating equipment, (i.e. motors, vibration and temperature sensors, seal pots, etc.) and local distribution panels, should be reviewed with the Owner’s Representative. [19: 05-DEC-2011; MOC 2010_08868; By: Duane Boswell; Supersedes Issue Date 28-Sep-2011; Removed reference to paragraph 71.8.2.2.2.]

71.9.2.2.4. Voltages above 240 V shall not be installed in[endnoteRef:20] surface metal raceway, nonmetallic surface raceway, or nonmetallic tubing. [20: 15-NOV-2012; MOC 2012_12263; By: Mike Silvester; Supersedes Issue Date 15-OCT-2012; Removed ‘electrical metallic tubing’.]

71.9.2.2.5. [endnoteRef:21]Circuits installed in EMT conduit shall follow the guidelines and restrictions noted in G7C-0311-06. [21: 15-NOV-2012; MOC 2012_12263; By: Mike Silvester; Supersedes Issue Date 15-OCT-2012; Improved instruction for use of EMT Conduit.]

71.9.2.2.6. All spare conduits shall be effectively sealed at both ends by installing a “C” conduit fitting and a threaded conduit plug. Wooden plugs are not allowed.

71.9.2.2.7. Install a pulling cord in all spare underground conduits.

71.9.2.2.8. When conduit size is not specified, contractor shall size conduit to meet the minimum requirements of the governing codes.

71.9.2.2.9. All rigid galvanized steel and plastic coated rigid galvanized steel conduits entering cable trays shall be grounded in accordance with Specifications G7C010301 or G7C010302.

71.9.2.2.10. In process and any outdoor areas, conduit entries to electrical equipment shall be from the bottom or side [endnoteRef:22]with low point drains installed at an elevation below the conduit entry. Top entries are not allowed unless specifically called for on the drawings. Exception may be made with approval from the Owner’s Representative. [22: 10-APR-2012; MOC 2012_11387; By: Gary Johnson; Supersedes Issue Date 05-DEC-2011; Added instructions for installation of low point drains.]

71.9.2.2.11. [endnoteRef:23]All conduits shall have an approved conduit point drain at the lowest point in the conduit routing. The drain shall be of stainless steel or non-corrosive material and shall be approved for the hazardous service where installed. [23: 10-APR-2012; MOC 2012_11387; By: Gary Johnson; Supersedes Issue Date 05-DEC-2011; Added paragraph for installation of conduit drains.]

71.9.2.2.12. [endnoteRef:24]All conduits entering a building shall have a low point drain on the exterior of the building. This drain must be below the elevation of the entry. [24: 10-APR-2012; MOC 2012_11387; By: Gary Johnson; Supersedes Issue Date 05-DEC-2011; Added paragraph for using conduit drains prior to building entry.]

71.9.2.2.13. Spare threaded gland holes shall be sealed with an adequate plug.

71.9.2.2.14. Exposed field cut threads and damaged areas on rigid galvanized steel conduit shall be coated [endnoteRef:25]with ZRC per G7C-0311-01 on the same day the conduit is threaded or damaged. Threads shall be coated prior to installation. See Workmanship paragraph 71.6 for additional instructions. [25: 27-APR-2010; MOC 2010-08618; By: Gary Johnson; Supersedes Issue Date 05-APR-2010; Updated 'Conduit Installation" section to align to G7C-0311-01 which allows for brush or spray coating of cut galvanized conduit.]

71.9.2.2.15. Exposed field cut threads and damaged areas on plastic coated rigid galvanized steel (RGS) conduit shall be coated in accordance with the plastic coated RGS conduit Manufacturer’s instructions on the same day the threading or damage occurs.

71.9.2.2.16. The Contractor shall provide the Owner’s Representative with written documentation of training for all personnel installing plastic coated rigid galvanized steel conduit. All personnel shall have viewed the Manufacturer’s installation videotape within the past 12 months. Qualification of the personnel shall be subject to Owner’s Representative approval.

71.9.2.2.17. Conduit seals installed for service in hazardous (classified) locations shall be poured using the Manufacturer’s recommended materials and installed per the Manufacturer’s instructions. Duct seal and similar materials may not be used as conduit seals.

71.9.2.3. Cable Tray Installation

71.9.2.3.1. The Contractor shall install all cable trays unless otherwise noted herein or on the drawings.

71.9.2.3.2. Cable tray systems shall form a complete system, including supports, suspension rods, hangers and necessary fittings, such as expansion joints, clips, reducers, dropout guides and bolting as may be required.

71.9.2.3.3. Cable tray covers shall be installed for vertical sections as shown on drawings.

71.9.2.3.4. 300 V Instrument cables shall be separated by barriers (dividers) when installed in the same cable tray as cables having voltage above 300 V.

71.9.2.3.5. Intrinsic safe cables shall be separated by barriers when installed in the same cable tray as Instrument cables.

71.9.2.4. [endnoteRef:26]Grounding of cable trays [26: 27-JUN-2013; MOC 2013_13020; By: Gary Johnson; Supersedes Issue Date 02-MAY-2013; Updated to reflect ground bus criteria based upon cable tray material.]

71.9.2.4.1. Each cable tray run shall have a ground conductor installed in or on the tray running the entire length of the tray. The ground conductor shall be #2/0 AWG Dow Code A1.

71.9.2.4.1.1. The ground conductor shall be connected at the equipment ground at origin (in electrical switch room) and connected to a ground point (main pipe rack or ground bar) on the destination end.

71.9.2.4.1.2. [endnoteRef:27]Metallic cable trays shall include a continuous cable ground bus and shall be bonded to the ground conductor at least once in each tray portion separated by expansion joints or discontinuities per G7C-0125-01 or G7C-0125-02 as identified in the engineering details. [27: 15-APR-2008; MOC 2008_06024; By: Terrell Goudy; Supersedes Issue Date 14-APR-2008; Updated the ‘Grounding of Cable Trays’ section 71.8.2.4.1.2, 3 and 4.]

71.9.2.4.1.3. Fiberglass cable trays shall include a continuous cable ground bus per G7C-0125-02

71.9.2.4.1.4. Ground conductor bus, jumpers, and clamps shall not interfere with any cable that will be installed in the cable tray.

71.9.3. [endnoteRef:28]Grounding of Raceways [28: 27-JUN-2013; MOC 2013_13020; By: Gary Johnson; Supersedes Issue Date 02-MAY-2013; Updated to reflect ground bus criteria based upon cable tray material.]

71.9.3.1. Where a cable tray to conduit transition is required for metallic cable trays, use detail [endnoteRef:29]G7C-0326-03. [29: 15-OCT-2012; MOC 2012_12024; By: Gary Johnson; Supersedes Issue Date 17-SEP-2012; Removed reference to deleted G7C~0326-02. Added reference to G7C-0326-03]

71.9.3.2. Where a cable tray to conduit transition is required for fiberglass cable trays, bond metallic conduit to the cable ground bus per G7C-0125-02.

71.9.3.3. Metallic conduit is generally grounded at both ends through its connections to properly grounded equipment. The connection is a screw hub or lock nuts to the equipment’s metallic enclosure.

71.9.3.4. When metallic conduit for >50 V circuits is connected to nonmetallic enclosures the conduit shall be grounding using an approved grounding bushing.

71.9.3.5. When nonmetallic conduit is used underground, the turnups out of the ground shall be rigid galvanized steel. These turnups shall be bonded together and grounded. The grounding conductor shall be #4 AWG.

71.9.3.6. [endnoteRef:30]Conduit expansion joints must include a ground bonding method per: [30: 31-Mar-2010; MOC 2010_08541; By: Gary Johnson; Supersedes Issue Date 17-Feb-2010; Updated conduit bonding jumper requirements.]

71.9.3.6.1. Rigid Galvanized Steel - G7C-0311-01

71.9.3.6.2. Aluminum - G7C-0311-02

71.9.3.6.3. Plastic Coated Conduit - G7C-0311-04. .

71.9.3.7. In certain cases, such as motor control centers, panelboards, switchgear, etc., conduit is brought through sheet metal enclosures. The lock nuts or the “Screwtite” hubs are relied on as a ground connection. In most cases, this type of ground connection is adequate. The following are exceptions:

71.9.3.7.1. All above 1000 volt circuit conduit shall be bonded together using approved threaded grounding bushings and the bonding cable connected to the apparatus ground bus if available or otherwise to the apparatus sheet metal enclosure with a compression type lug. The grounding conductor shall be #4 AWG.

71.9.4. Labeling

71.9.4.1. Cable tray systems and conduit shall be labeled as follows. Label materials shall be in accordance with Table 71.7.

71.9.4.1.1. Cable tray labels

71.9.4.1.1.1. If hardware is used to attach labels to cable tray, the heads of the screws/bolts shall be on the inside of the cable tray rail.

71.9.4.1.1.2. For installations outside of the US:

71.9.4.1.1.2.1. The labels for indoor cable trays shall be located on both sides of the cable tray at intervals not to exceed 20 feet and shall be visible after installation.

71.9.4.1.1.2.2. The labels for outdoor cable trays shall be located on both sides of the cable tray at intervals not to exceed 40 feet and shall be visible after installation.

71.9.4.1.1.3. For installations in the US:

71.9.4.1.1.3.1. Cable trays containing conductors rated over 600 volts shall have a permanent, legible warning notice carrying the wording “DANGER—HIGH VOLTAGE—KEEP AWAY” placed in a readily visible position on all cable trays, with the spacing of warning notices not to exceed 3 m (10 ft).

71.9.4.1.1.4. Labels to be located as needed to assist in identifying cable tray that is difficult to identify due to routing (bends and turns).

71.9.4.1.1.5. Labels shall be installed close to and on both sides of all wall penetrations.

71.9.4.1.2. Install conduit labels with the cable tag, circuit number, or load equipment tag on the conduit in the following locations:

71.9.4.1.2.1. Cable tray to conduit transitions

71.9.4.1.2.2. Both sides of wall penetrations

71.9.4.1.2.3. Common conduit stubups are excluded.

71.9.5. Fire Barrier Installation

71.9.5.1. [endnoteRef:31]The Contractor shall provide, install and certify all fire stop materials to complete the installation of the fire stop system as per Manufacturer’s recommendations, drawings, practices and as specified herein. [31: 17-FEB-2010; MOC 2010_08366; By: Gary Johnson; Supersedes Issue Date 16-SEP-2009; Reworded to align with G7D-0041-02.]

71.9.5.2. Fire barrier material shall be installed at the end of the job. Rework to the fire stop due to premature installation of the fire barrier materials shall be done at the Contractor’s expense.

71.9.5.3. Contractor shall seal conduit and cable tray penetrations with fire rated sealant per Specification G7C030401 and Manufacturer’s recommendations.

71.9.5.4. Repair of openings and penetrations in existing foam barriers per Specification G7C033107.

71.9.5.5. The Contractor shall clean and paint all weld burns and scratched or marred surfaces related to his installation of fire stops in accordance with Section 16, ‘Painting’.

71.9.6. Material Specification

71.9.6.1. Supports

71.9.6.1.1. For Support or Strut Channel, the Contractor shall use a minimum 12 gauge, Hot Dipped Galvanized channel for both indoor and outdoor installations of racks or hangers.

71.9.6.1.2. The Contractor shall ensure that all the required supports are in place before fire proofing is applied. If fire proofing has already been applied, the Contractor shall repair the damage caused by fixing the supports at his expense in accordance with the Owner’s specifications.

71.9.6.2. Conduit

71.9.6.2.1. Rigid galvanized steel conduit shall be in accordance with Specification G7C031101

71.9.6.2.2. Rigid nonmetallic conduit shall be in accordance with Specification G7C031103.

71.9.6.2.3. Thin wall conduit (Electrical Metallic Tubing EMT) shall be in accordance with Specification G7C031106.

71.9.6.2.4. PVC coated rigid galvanized steel conduit shall be in accordance with Specification G7C031104.

71.9.6.2.5. Flexible metal conduit shall be in accordance with Specification G7C031105.

71.9.6.2.6. All Electrical Nonmetallic Tubing (ENT) shall be in accordance with Specification G7C031108.

71.9.6.2.7. Rigid aluminum conduit shall be in accordance with Specification G7C031102. (Aluminum Conduits are permitted if size is above 2 in and if caustic is not present).

71.9.6.2.8. Liquidtight flexible metallic conduit shall be installed on all motor lead termination enclosures to facilitate maintenance. Length shall not exceed six ft, unless approved by Owner’s Representative.

71.9.6.3. Cable Tray

71.9.6.3.1. Galvanized cable tray system shall be Hot Dipped Galvanized Steel in accordance with Specification G7D032100 and data sheets G7D0321A. The cable tray shall be Hot Dipped Galvanized after fabrication.

71.9.6.3.2. Trough type construction with expanded metal bottom type cable tray shall be limited to small conductors inside control rooms and around panelboards. This shall be used only inside buildings. For steel and aluminum cable tray only. Do not use outside of the buildings.

71.9.6.3.3. Aluminum cable tray system shall be of aluminum alloy and shall be in accordance with Specification G7D032200 and data sheets.

71.9.6.3.4. FRP and FRVE cable tray system shall be in accordance with Specification G7D032300 and data sheets.

NOTE: User shall select the above statement or statements as needed for the given job specification. Refer to G7C-0304-01 for guidelines on selection preferences.

71.10. WIRE, CABLE, POWER TERMINATIONS and SPLICES

71.10.1. Scope of Work (User shall edit this paragraph)

71.10.1.1. The Contractor shall install the following wire and cable as indicated on drawings or Electrical Cable Schedules including, but not limited to the following:

71.10.1.1.1. Install Power wiring/cable rated above 1000 V

71.10.1.1.2. Install Power and control wiring/cable rated 1000 V and below.

71.10.1.1.3. Install instrument cables

71.10.1.1.4. Install Fiber Optic cable

71.10.1.1.5. Install cable accessories above 1000 V

71.10.1.1.6. Install cable accessories 1000 V and below.

71.10.1.1.7. Install cables in Underground conduit banks.

71.10.2. The Contractor shall be responsible for terminating all cables to all motors, devices, and equipment unless otherwise noted on the drawings or elsewhere in the Job Specifications.

71.10.3. Workmanship

71.10.3.1. When wire or cable size is not specified, contractor shall size wire and cable to meet the minimum requirements of the governing codes.

71.10.3.2. Where cable tray is installed indoor directly above a motor control center, switchgear or panel enclosure, at a height of less than 18 in. (450 mm) above the equipment, the cables into each vertical section may be combined and enter through one or more insulated bushings, minimum size 2 in. (50 mm). When the distance between the top of the equipment and the tray is greater than 18 in (450 mm), the cable(s) shall be installed in a [endnoteRef:32]hot dipped galvanized conduit riser to within 18 in (450 mm) of the cable tray. The minimum riser size shall be 2 in. (50 mm) in diameter. Sizing and support of the conduit and bushing shall be the responsibility of the Contractor unless specifically called out in the drawings. [endnoteRef:33]Refer to G7C-0314-01. [32: 15-NOV-2012; MOC 2012_12263; By: Mike Silvester; Supersedes Issue Date 15-OCT-2012; Added ‘hot dipped galvanized’.] [33: 15-NOV-2012; MOC 2012_12263; By: Mike Silvester; Supersedes Issue Date 15-OCT-2012; Added reference to G7C-0314-01.]

71.10.3.3. Installation of wire or cable in conduit shall observe good industry practice and the manufacturer’s requirements to avoid damage to the conductors and insulation. Pulling devices must be approved for the intended purpose. A maximum of three 90 degree or equivalent bends shall not be exceeded between pulling points. In certain instances, a pull around four or more 90 degree or equivalent bends may be permissible, but this requires certified engineering pulling calculations and specific written approval from the Owner’s Representative.

71.10.3.4. Nominal 480 V & above circuits in conduit shall be limited to “one circuit per conduit” unless specifically designated otherwise on the drawings. Conduit stubups on motor control centers and similar equipment are excluded.

71.10.3.5. Control and alarm wires terminating in junction boxes, relay panels, control panels, etc. shall be installed so as to break out of the bundle adjacent to the terminal to which it is to be attached. Bundles shall be laced with nylon spiral wrap, 3M Scotch 100 wire & cable tie wraps, or cable ties.

71.10.3.6. The Contractor shall take every precaution to prevent damage of cable during all phases of cable handling and during the full construction period of the contract.

71.10.3.7. Cable shall be installed in accordance with Engineering Practice G7C031801 with regards to minimum bending radii of the cable.

71.10.3.8. When a multiconductor cable is specified for a power circuit, the outer jacket of the cable shall be stripped back at least 18 in. (450 mm) from the individual circuit conductors sufficient to allow placing a clampon ammeter around the individual circuit conductors within the vertical wireway of the motor control center.

71.10.3.9. The Contractor shall route raceways and cables, to stay clear of exhausts, relief valves, spillage and high temperature areas and all other such locations where cables are susceptible to damage.

71.10.3.10. Cables shall be laid in a logical and planned sequence, especially in cable cellars, basements, and subfloor installations.

71.10.3.11. Cables installed in a tray system shall be hand laid or shall be pulled into the tray using cable pulling blocks located and supported so as not to impose pulling loads on the tray system. Pulling rollers shall be attached to the trays at suitable intervals to prevent cables from dragging on the tray rungs during pulling.

71.10.3.12. Cables installed in conduit and/or conduit sleeves shall be hand pulled. If it is impractical to pull by hand, a motorized tugger may be used, provided that the cable manufacturer’s pulling tension and sidewall pressure will not be exceeded. Motorized tuggers shall be equipped with a strain gauge and the maximum pulling tension recorded throughout the pull.

71.10.3.13. All cable entries, into equipment and sleeves, shall be made by using suitable cable entry glands.

71.10.3.14. [endnoteRef:34]Where alternating current conductors enter a ferrous metal enclosure or raceway, they shall be arranged to avoid inductive heating. [34: 21-NOV-2016; MOC 2016-11-01-111929-U374149; By: Gary Johnson; Supersedes Issue Date 20-MAY-2016; Added sub section to better clarify that for single phase AC power circuits, non-magnetic cable glands are also required with the non-magnetic entry plates.]

71.10.3.14.1. Where conductors carrying alternating current are installed in ferrous metal enclosures, all phase conductors and, where used, the grounded conductor shall be grouped together for entry in a common cable gland. For triplexed cable, the cable gland shall be similar to the OZ Gedney #CSB with a GL attachment, or equivalent, specifically designed for use with triplexed cable.

71.10.3.14.2. Single phase conductors carrying alternating current entering ferrous metal enclosure shall be avoided unless specifically required in the installation drawings. Where a single conductor carrying alternating current passes through ferrous metal, non-magnetic cable entry plates and cable glands shall be used.

71.10.3.15. Conductors must be in a single continuous length from pull point to pull point. Splices will not be permitted in any raceway unless located in a device, fitting, or location approved for splicing service unless otherwise shown on the drawings and approved by the Owner's Representative.

71.10.3.16. Spare wires and pairs/triads in instrument cables shall be terminated, if possible, and grounded and labeled as spare.

71.10.3.17. Cables installed outdoors which cannot be promptly terminated the same day as installed shall be carefully protected from normal field construction hazards. Cable ends exposed to the elements shall be temporarily sealed with cold shrink or adhesive-lined heat shrink end caps or 3M Scotch 06147 or 06149 tape to prevent entrance of rain water or moisture.

71.10.3.18. [endnoteRef:35]Cable Ties and Cable Support [35: 28-SEP-2011; MOC 2011_10478; By: Gary Johnson; Supersedes Issue Date 30-MAR-2011; Added Section titled "Cable Ties and Cable Support".]

71.10.3.18.1. Cable Tie material selection shall be compatible with the material corrosion recommendations, strength, and longevity for service. Unless otherwise indicated on the drawings, outdoor applications in non-corrosive environments should use weather-resistant Nylon 12 cable ties. NOTE: When multiple cable types and services are being used, it is encouraged to replace the following paragraph with “Refer to Cable Ties Job Specification G7D-0302-01 for cable tie material preferences”

71.10.3.18.1.1. Consult with the Owner’s Representative for cable tie materials in corrosive environments or power cabling applications with the potential for high arc fault energy (primarily main feeder cables).

71.10.3.18.2. Cable ties shall be installed in such a manner that no raised sharp edges remain after installation.

71.10.3.18.3. Power cable assemblies using three single conductor cables shall be tied together with cable ties at three foot intervals in all cable tray runs, wire troughs, motor control center wire ways, other wire ways, pull boxes, etc., unless otherwise indicated on the drawings.

71.10.3.18.4. Cables in vertical tray and on all bends and turns shall be secured at least at every vertical rung with cable ties or metal cable clamps with rubber/neoprene inserts or the Owner's Representative approved equivalent (Teflon coated . All vertical cables, installed by the contractor each day, shall be secured to the cable tray prior to leaving, on the same day they are installed, unless otherwise directed in writing by the Owner’s Representative. By securing the cables at intervals, the weight of the vertical cables will be distributed and prevent damage to the cable tray.

71.10.3.18.4.1. Clamps around 1/C power cables shall be nonferrous.

71.10.3.18.5. For medium voltage conductors and low voltage conductors 250Kcmil and greater, installed in vertical tray or on horizontal fittings, applying cable ties in a cross pattern (single long tie or two ties) reduces the risk for cable slippage and improves cable separation spacing management.

71.10.3.18.6. On vertical drops of more than 10 meters (30 feet) in tray for either large diameter cables or a large number of cables, use strain-relief grips or similar devices to securely grip the cables and support their weight. Install them near the top of the bend and connect them to the structural member of the steel.

71.10.3.19. Lugs, Terminations, and Splices

71.10.3.19.1. When connecting power cables #8 AWG and larger to equipment terminals which are supplied with removable mechanical lugs, the mechanical lugs shall be removed and the cable shall be compression lugged and bolted to the equipment.

71.10.3.19.2. Wire insulation shall be maintained to within 0.125 in (3 mm) of all terminals or connectors.

71.10.3.19.3. Wire shall be trimmed to appropriate length before making terminations. Remove excess length and leave sufficient slack to allow routing and tucking back of wiring as required.

71.10.3.19.4. No more than one nonlugged wire shall be installed to one screw terminal or terminal block connection, unless otherwise indicated on the drawings.

71.10.3.19.5. Not more than two lugged wires shall be installed to one screw terminal or terminal block connection, unless otherwise indicated on the drawings.

71.10.3.19.6. The Contractor shall provide the Owner’s Representative with written proof of current training certification and qualification for all personnel installing 2 kV to 46 kV cable accessories (terminations, splices and motor termination kits) on shielded power cable. Qualification of the personnel shall be subject to Owner’s Representative approval. Training certification and qualification shall be current within 12 months. Certification and qualification shall be in accordance with the table below:

Shielded Power Cable Accessories Installation Certification and Qualification

Nominal System Voltage

Requirements

2.4 kV

Certified by the accessory manufacture or the National Cable Splicing Certification Board (NCSCB - www.ncscb.org)

≥ 4.16 kV

Certified by the National Cable Splicing Certification Board (www.ncscb.org). See paragraph below for clarifications.

71.10.3.19.6.1. In recognition of the amount of time it takes to become certified by the NCSCB, the installer shall have passed the written portion of the certification on or before January 1, 2010 and the hands-on portion of the certification on or before [endnoteRef:36]January 2, 2011. Up until January 1, 2010, certification by the accessory manufacture will be sufficient, although NCSCB certification is preferred. [36: 14-APR-2008; MOC 2008_06026; By: James Young; Supersedes Issue Date 08-APR-2008; Para 71.9.3.2.6.1 corrected the year date from 1011 to 2011. No technical update.]

71.10.3.20. Cable Shield/Screen/Armour Grounding

71.10.3.20.1. Unless otherwise indicated on the drawings, cables shields/screens/ Armour shall be grounded as follows:

71.10.3.20.1.1. Cable Armour shall be earthed (grounded) to the equipment safety ground grid at both ends with a UL listed grounding connector. For instrument cables, the grounding conductor shall be a minimum #12 AWG and be kept as short and straight as possible to minimize impedance. Any bends required reaching the grounded back plane in the junction box or ground grid shall be long radius. Sharp bends are not allowed.

71.10.3.20.1.2. Instrument cables with ZETABON or REYSHIELD tape surge shields shall be earthed (grounded) to the equipment safety ground grid at both ends with a 3M Scotch lock #4462 shield connector in accordance with Engineering Installation detail [endnoteRef:37]G6E-6721-04. The grounding conductor shall be a minimum #14 AWG and be kept as short and straight as possible to minimize impedance. Any bends required to reach the grounded back plane in the junction box or ground grid shall be long radius. Sharp bends are not allowed. [37: 17-FEB-2014; MOC 2014_14314; By: Fariman Rasolkhani; Supersedes Issue Date 27-JUN-2013; Update Instrument practice with new, correct practice number.]

71.10.3.20.1.2.1. Exception: 2 and 4 pair/triad count instrument cables with ZETABON or REYSHIELD tape surge shields will have a drain wire under the tape surge shield which shall be used for grounding instead of the 3M connector.

71.10.3.20.1.3. Overall aluminum/Mylar foil shields over instrument or control cables shall be grounded at one end only at the control room junction box / switchroom equipment and carried through all junction boxes in the field. The shield shall be clipped at the final connection point in the field to keep it isolated from ground.

71.10.3.20.1.4. Individual aluminum/Mylar foil shields over individual pairs/triads in multipair/triad instrument cables shall be grounded at one end only at the control room junction box / switchroom equipment and carried through all junction boxes in the field. The shield shall be clipped at the final connection point in the field to keep it isolated from ground.

71.10.3.20.1.5. [endnoteRef:38]Instrument cables connected to a process control system shall be grounded in accordance with G6C-6730-29 and G6C-6730-28 for cables with armour / ZETABON or REYSHIELD tapes and nonarmoured types, respectively. [38: 17-FEB-2014; MOC 2014_14314; By: Fariman Rasolkhani; Supersedes Issue Date 27-JUN-2013; Update Instrument practices with new, correct practice numbers.]

71.10.3.21. [endnoteRef:39]Shielded Power Cable [39: 16-SEP-2009; MOC 2009_07707; By: David Latta; Supersedes Issue Date 22-MAY-2009; This MOC updates section titled "Shielded Power Cable" to be consistent with section 9.4 in G7C-0104-00.]

71.10.3.21.1. Power cable shields shall be grounded in locations as shown on the project specific installation drawings. If the drawings lack that information, contact the Owner’s Representative for instructions prior to terminating any cables or installing any splices. In general, power cable shields are grounded as follows:

71.10.3.21.1.1. High resistance grounded systems

71.10.3.21.1.1.1. For single core and three core shielded power cables installed on high resistance grounded systems (typically medium voltage motor feeders and medium voltage cables or cable bus between transformer secondaries and switchgear) the shield ground braids shall be installed and brought out at the source end only and shall be attached to the power source equipment ground. At the load end, the cable internal grounding conductor(s) in three core cables or any separate grounding conductor run with single core cables shall be attached to the load equipment ground, but the termination kit shield ground braid shall not be installed.

71.10.3.21.1.2. Low resistance grounded systems

71.10.3.21.1.2.1. For single core and three core shielded power cables installed on low resistance grounded systems, the ground braid shall be installed and brought out of the termination kits on both ends of the circuit and shall be attached to the equipment ground at both ends. Any application of shields grounded at one end only shall be supported by engineering calculations to demonstrate the reasons for the practice and the safety of the installation. In this case, the termination kit ground braid shall be folded back and taped to the cable jacket to prevent contact with any grounded parts.

71.10.3.21.1.2.2. For long lengths (>200 m or 650 feet) of single core shielded power cables where the phase conductors are triplexed (XYZ configuration), in addition to the shields being grounded at both ends, selected splice locations may have a shield ground. The grounded shield splice locations are determined by calculation to maintain a value of ground fault current which will not impact the operation of the ground fault relays. For cables in this configuration, if project specific drawings showing at which splice locations to ground shields have not been provided, contact the Owner’s Representative prior to installing any splices.

71.10.3.21.1.2.3. For single core shielded power cables where the phase conductors are physically separated (X, XX, or XXX configuration), the correct practice is to make a one-point earth ground by grounding the cable shield at one end of the cable only. In the case of long circuits (>200 m or 650 feet) where the voltage differential between the ends of the circuit could approach or exceed 70-100 volts, it becomes necessary to gap the shield and sectionalize the shield into multiple sections, with the shield in each section grounded on one end only. This limits the shield voltage and prevents the cable shield from becoming a path for induced circulating currents and from being used as part of the lightning protection system. The voltage build-up is dependent upon the current in the cable and the conductor size. Therefore the maximum length of cable before a shield gap is necessary to limit the shield voltage to a safe level (approximately 70-100 volts) must be calculated for each installation. For cables in this configuration, if project specific drawings showing at which locations to ground shields and which to isolate shields have not been provided, contact the Owner’s Representative prior to installing any splices or terminations.

71.10.3.21.2. When ground braids are required to be grounded as specified herein above or on the drawings, the grounding conductor size shall be in accordance with Dow Engineering Practice G7C010200 unless otherwise shown on the drawings. The ground braids shall be connected to the equipment grounding conductor using approved removable connectors. The equipment grounding conductor shall be connected to the equipment ground using approved compression connectors. Connectors shall be crimped with the manufacturer’s recommended tool and die.

71.10.4. Materials

71.10.4.1. Lugs and splicing sleeves for power, control, and grounding and instrumentation cable shall be applied in accordance with Engineering Specification G7D040112, unless otherwise indicated on the drawings. (User shall edit this paragraph , consult TRL or DAS)

71.10.4.2. Motor terminations shall be in accordance with Engineering Specification G7D040111 for 5 kV motors and G7C-0471-01 for 600 V motors, unless otherwise indicated on the drawings. (User shall edit this paragraph , consult TRL or DAS)

71.10.4.3. 5 kV and 15 kV termination and splicing kits shall be applied in accordance with Engineering Specification G7D040111. (User shall edit this paragraph , consult TRL or DAS)

71.10.4.4. Wire and cable pulling lubricants shall be in accordance with G7D040109.

71.10.4.5. The cross reference between Dow Cable Codes and Dow Specification numbers is in specification G7C040101.

71.10.4.6. Split bolt connectors shall not be used unless specifically called for on drawings.

71.10.4.7. Wire nuts shall not be used except for lighting and 120/208240 volt receptacle circuits.

71.10.4.8. [endnoteRef:40]Aluminum conductors are acceptable where specified by the owner on the drawings, specifications and engineering instructions. Beyond those cases where aluminum has been specified by the owner, the contractor shall advise the Owner's Representative if aluminum current-carrying parts (including lugs, bus etc.) are discovered during the course of the contract in any material or equipment. [40: 17-Mar-2011; MOC 2010_09030; by John Shelton, Supersedes Issue Date 17-AUG-2010; Paragraph 71.10.4.8 revised to allow the use of aluminum cable.]

71.10.4.9. Bolts, nuts, washers (flat, lock and Belleville type), used for lugged terminations shall be silicon bronze with specification G7D133221 unless otherwise specified on the drawings. Sizes 0.25 in and smaller may be stainless steel. Bolts shall be sized in accordance with the lug Manufacturer’s recommended bolt size.

71.10.4.10. All bolted power terminations with Aluminum connections shall use Belleville/spring washers on both the nut and bolt side.

71.10.5. Labeling of Wire

71.10.5.1. Multiconductor cables shall have a weatherproof cable designation marking (cable tag per cable schedule or drawings) at each end where the jacket is stripped (or would be stripped in the case cables being terminated by others).

71.10.5.2. Individual twistedpair signal wires shall have sleeve type markers installed at each end. Label shall indicated circuit or device number as shown on the wiring diagram. Label shall be weather proof.

71.10.5.3. Single conductor cables shall have a weatherproof cable designation marking (cable tag per cable schedule or drawings) at each end where the cable is terminated (or would be terminated in the case cables being terminated by others).

71.10.5.4. Spare wires and pairs shall be terminated, if possible, grounded and labeled as spare.

71.10.5.5. Single core power cables shall be phase identified at each end with Scotch 35 electrical color coding tape. Phase A = Black (or no tape if jacket is black), Phase B = Red and Phase C = Blue

71.10.6. Wire/Cable Color Coding

71.10.6.1. Conductors used for wiring shall be color coded and/or numbered in accordance with the following:

71.10.6.1.1. Specification G7C070501 and/or in accordance with the local codes, except as shown on drawings.

71.10.6.1.2. Conductors with green or green with yellow stripe color shall be used as grounding wires only. Conductors with white or gray color shall only be used as a neutral.

71.11. DEMOLITION and ABANDONING OF WIRE AND CABLE SYSTEMS

71.11.1. Before starting any demolition work, the Contractor shall prepare and discuss the work procedure with the Owner’s Representative.

71.11.2. Demolishing or cutting of wire and cable systems shall be in accordance with procedure [endnoteRef:41] [endnoteRef:42]G7M1295-00. [41: 08-APR-2008; MOC 2008_06006; By: James Young; Supersedes Issue Date 02-AUG-2007; Para 71.10.3, Corrected the Specification and the hyperlink.] [42: 14-SEP-2012; MOC 2012_11799; By: Colby Weber; Supersedes Issue Date 10-APR-2012; Changed reference procedure to G7M-1295-00.]

71.11.3. Taking outofservice or abandoning electrical wire and cable shall be in accordance with procedure [endnoteRef:43] G7M040137. [43: 08-APR-2008; MOC 2008_06006; By: James Young; Supersedes Issue Date 02-AUG-2007; Para 71.10.3, Corrected the Specification and the hyperlink.]

71.12. BUS DUCT and CABLE BUS

71.12.1. Scope of Work

71.12.1.1. The following bus duct shall be installed as specified on OneLine Diagrams and on Plan drawings:

71.12.1.1.1. 1000 Volt and Below

71.12.1.1.2. Above 1000 V


71.12.2.1. Support bus duct as shown on drawings or per Manufacturer’s recommendation. Contractor shall install support brackets, hangers and hardware to complete the installation of bus duct system.

71.12.2.2. Install wall flange and fire barriers per supplier drawings.

71.13. MOTORS

71.13.1. Scope of work

71.13.1.1. The Contractor shall install and terminate the following power and control cables:

71.13.1.1.1. 0 1000 VAC Low Voltage Motors

71.13.1.1.2. 1000 VAC and Above High Voltage Motors

71.13.1.1.3. DC Motors


71.13.2.1. Rotation Check

71.13.2.1.1. The Contractor shall verify the control circuit before rotation check.

71.13.2.1.2. The Contractor shall be responsible for the checking of the proper rotation of the electrical equipment. The Contractor shall contact the Owner’s Representative to verify desired rotation.

71.13.2.1.3. The Owner’s Representative, or his designee, shall witness the rotation check.

71.13.2.1.4. The Contractor shall change the motor power cable terminations as required for proper rotation.

71.13.2.2. Large motors above 200 HP are furnished with space heaters. User shall Edit Rating for specific project)

71.13.2.2.1. The Contractor shall install temporary 120 VAC space heater wiring at the motor storage area. (User shall edit these paragraphs for specific project)

71.13.2.2.2. The motor location, power source, and cable/raceway routing will be identified on the drawings or during site visit.

71.13.2.2.3. The power source will be construction power or consult the Owner’s Representative.

71.13.2.3. Power junction boxes for large motors have been shipped loose as identified on the Motor/Electrical Equipment List or Owner Furnished Material List. The Contractor shall install the loose junction boxes on motors.

71.14. MOTOR CONTROL CENTERS (MCC’s) 600 V AND 5 kV CLASS (User shall edit the following as required)

71.14.1. Scope of Work

71.14.1.1. The Contractor shall install and wire the following types of equipment as shown on one line diagrams, or MCC schedules:

71.14.1.1.1. Install New Motor Control Centers

71.14.1.1.2. Add Sections to Existing Motor Control Centers

71.14.1.1.3. Install starter cubicles units to existing Motor Control Centers

71.14.1.2. Contractor to use the Manufacturer’s lifting devices & lifting instructions to transport the equipment sections.

71.14.1.3. The Contractor shall set, assemble, level, and secure the MCC’s.

71.14.1.4. The Contractor shall install and wire all motor control stations and other devices required to complete each motor circuit as defined on the wiring diagrams and schematics for proper operations.

71.14.1.4.1. The Contractor shall size low voltage (600 V) motor overload heater elements as follows:

71.14.1.4.2. The Contractor shall gather nameplate data on 460/575 V motors included in the scope of this project. Data to include horsepower (HP), voltage (V), full load amps (FLA), and service factor of the motors.

71.14.1.4.3. The contractor shall size heater elements to the nearest value at 1.15 FLA for motors with 1.15 service factor and 1.10 FLA for motors with 1.0 service factor.

71.14.1.4.4. Obtain Owner’s Representative approval on the selected overload heater elements prior to installation.

71.14.1.5. The Contractor shall size motor power fuses as follows:

71.14.1.5.1. Low voltage (600 V) fuses shall be class RK5 for NEMA starter sizes 1 to 4 and UL Class RK1 for NEMA starter sizes 5 and 6. Fuse sizes shall be per MCC Data Sheets or OneLine Diagrams.

71.14.1.5.2. Medium voltage (2400 V or 4160 V) fuses shall be Rrated for motor application and Erated for transformer applications. Fuse sizes shall be per MCC Data Sheets or OneLine Diagrams.


71.14.2.1. The Contractor shall remove all old labels from existing or reclaimed MCC units before reusing on this contract.

71.14.2.2. Prior to setting in place, motor controllers of the 5 kV class, the floor surface shall be checked for a level plane within a tolerance of + or 0.0625 in any square yard. If a variance greater than this is encountered, the Owner’s Representative shall be contacted for instructions.

71.14.2.3. Adding Starter cubicles/Drawout Units To Existing Motor Control Center.

71.14.2.3.1. All plugin/drawout units shall be installed in the Motor Control Center before the MCC is energized. If the MCC is already energized, the plugin/drawout units shall be tested for faults and grounds with an insulation resistance tester before installation.

71.14.2.3.2. Installing or removing a plugin/drawout unit in an energized MCC shall be performed by plant approved personnel in accordance with the plant approved written hot work procedures.

71.14.2.4. Materials

71.14.2.4.1. Low voltage (600 V) fuses shall be LittelFuse, Bussmann or Ferraz Shawmut unless otherwise indicated in the Owner’s Recommended Electrical Equipment List or on the drawings.

71.14.2.4.2. Medium voltage (5 kV) fuses shall be Ferraz Shawmut unless otherwise indicated in the MCC Manufacturer’s instruction, the Owner’s Recommended Electrical Equipment List, or on the drawings.

71.14.2.5. Labeling of Motor Control Centers

71.14.2.5.1. Label materials shall be in accordance with Table 71.7.

71.14.2.5.2. MCC’s shall have Nameplates (Tags) installed at following locations.

71.14.2.5.2.1. MCC Incomer: MCC Tag and Source of Power

71.14.2.5.2.2. Each Cubicle shall have Load Tag Number, Load Tag Description, Source of Power Building Number, and Source of Power

71.14.2.5.2.3. Install nameplates on all motor control stations.

71.15. SWITCHING AND POWER PANELBOARD EQUIPMENT


71.15.1.1. The following equipment shall be installed and wired as specified in the drawings, Electrical equipment schedule, Manufacturer instructions, or as specified herein;

71.15.1.1.1. Panelboards for Power, Lighting, and Control: 120 VDC or 120/240 VAC, 1 Phase, 3 wire or 120/208 VAC, 3 Phase, 4 wire or 600 V class, 3 Phase, 4 wire.

71.15.1.1.2. Disconnect Switches (Low voltage 600 V class)

71.15.1.1.3. Transfer Switches – Auto/Manual


71.15.2.1. In process areas, conduit/cable entries to switches and power panels shall be from the bottom or side. Top entries are not allowed unless specifically called for elsewhere in this specification. Exception may be made with approval from the Owner’s Representative.

71.15.2.2. Coordinate installation of equipment with installation of wires, cables, electrical boxes, fittings, and raceway work.

71.15.2.3. Provide equipment grounding for equipment as required or indicated on drawings.

71.15.2.4. Touch-up scratched or marred surfaces to match original finish.

71.15.2.5. Fasten enclosure(s) firmly to walls and structural surfaces ensuring that they are permanently and mechanically anchored.

71.15.2.6. Tighten connectors and terminals, including bolts and screws, in accordance with equipment Manufacturer’s published torque tightening values.

71.15.2.7. Switching And Panelboard Equipment shall have an engraved tag affixed in a prominent location on the front of the panel. Lettering shall be 25mm high unless otherwise specified on drawings. Engraved tags shall be white, laminated phenolic with black lettering. Tags shall be labeled with circuit number and panel name as shown on drawing or as otherwise specified herein.

71.15.2.8. Equipment shall be as specified on drawings or elsewhere herein.

71.16. POWER TRANSFORMERS


71.16.1.1. Install oil filled or dry type Power transformers as shown on the OneLine Diagram or Electrical Equipment Schedule.

71.16.1.2. Oil filled type transformers are typically furnished with Radiators in place and oil filled.

71.16.1.2.1. Larger size oil filled type transformers may be furnished with radiators and conservator tanks shipped loose. When components are shipped loose, the Contractor shall install radiators, conservators, and fill the transformer with Owner furnished oil per Supplier instructions. (user shall edit as required)


71.16.2.1. Transformer(s) shall be installed as per drawings, specifications, and Manufacturer’s instructions.

71.16.2.2. The transformer grounding shall be in accordance with drawings and specifications.

71.16.2.3. Transformer installations shall be kept clear of combustibles and flammable products.

71.16.2.4. Transformer shall be secured on foundation.

71.16.2.5. Where bus ducts are involved, verify the top of elevation of transformer bus throat. Plan and coordinate bus duct installation per drawings.

71.16.2.6. [endnoteRef:44]Where the transformers have IR inspection windows mounted in the terminal boxes the contractor will maintain an electrical working space in front of the windows. Do not run conduit or install cable tray or bus supports within a 3ft working space of the windows. [44: 11-JUN-2008; MOC 2008_06191; By; Mike Silvester; Supersedes Issue Date 07-MAY-2008; Paragraph 71.16.2.2 added for IR inspection window information.]

71.16.3. Labeling of Transformers

71.16.3.1. Label materials shall be in accordance with Table 71.7.

71.16.3.2. Where installed within a fenced area, install a nameplate on the fence with the Transformer tag and source of power at front of fence.

71.16.3.3. Where installed within a fenced area, install “DANGER HIGH VOLTAGE – KEEP OUT” signs in front of transformer on the fence or the barrier and at fence entrances/gates.

71.17. SWITCHGEAR (600 V and 5/15 kV class)


71.17.1.1. Perform complete installation of Owner Furnished switchgear including but not limited to the following:

71.17.1.2. Remove bottom channels if provided for shipping the unit.

71.17.1.3. Set, assemble, level and secure switchgear.

71.17.1.4. Reconnect internal wiring disconnected for shipping.

71.17.1.5. Install circuit breakers and/or load break switches into switchgear assembly.

71.17.1.6. Install power, interface, and control wiring.


71.17.2.1. Prior to setting in place, switchgear of 5 kV class or greater, the floor surface shall be checked for a level plane within a tolerance of + or 0.0625 in any square yard. If a variance greater than this is encountered, the Owner’s Representative shall be contacted for instructions.

71.17.2.2. The Contractor shall level and shim the switchgear assembly per Manufacturer’s specifications to see that no stress is placed on the switchgear structure or bus work.

71.17.2.3. The Contractor shall check the operation of breaker trolley and winch to verify and assure free operation.

71.17.2.4. Terminal and cable connections of switchgear cable entries shall be completed with manufactures supplied entry plates (typically non-magnetic for single phase entry). Cable glands are mandatory. Aluminum plates are generally acceptable for non-arc resistant equipment. Entry plates, glands, and covers for arc resistant equipment shall maintain the integrity of the equipment in alignment with the manufacturer’s instructions.

71.17.2.4.1. In many cases, aluminum entry plates and fire resistant entries will not meet the melt temperature or impulse pressure expectations for arc resistant equipment.

71.17.3. Material Specifications

71.17.3.1. Bolting hardware for power terminations shall be per manufacture’s installation instructions.

71.17.3.2. Cable termination to switchgear shall be in accordance to drawings and specifications.

71.17.3.3. All bus bar splice connection joints, and shall be torqued in accordance with the Manufacturer’s specifications.

71.17.4. Labeling

71.17.4.1. Switchgear labeling shall be in accordance with Table 71.7 and related paragraphs.

71.17.4.2. Supplier furnished Nameplates for each section shall be verified per one line diagram. Notify Owner’s Representative of any errors in writing.

71.18. LIGHTING, RECEPTACLES AND BRANCH CIRCUITS


71.18.1.1. The Contractor shall install lighting equipment including, but not limited to the following:

71.18.1.1.1. High Pressure Sodium Luminaires (Fixtures)

71.18.1.1.2. Metal Halide Luminaires

71.18.1.1.3. [endnoteRef:45]LED Luminaires [45: 17-FEB-2010; MOC 2010_08366; By: Gary Johnson; Supersedes Issue Date 16-SEP-2009; Added LED Luminaires.]

71.18.1.1.4. Fluorescent Lighting; Industrial Luminaires

71.18.1.1.5. Fluorescent Lighting; Troffer Luminaires

71.18.1.1.6. Fluorescent Lighting; Clean Room Luminaires

71.18.1.1.7. Fluorescent Lighting; Surface Mount Luminaires

71.18.1.1.8. Recessed Luminaires

71.18.1.1.9. Battery Operated Emergency Unit

71.18.1.1.10. Lighting Circuit Switch

71.18.1.1.11. Lighting Contactor

71.18.1.1.12. Ballast and/or Dimming Equipment

71.18.1.1.13. Photo cells

71.18.1.1.14. Lamps

71.18.1.2. The Contractor shall install the following receptacles as shown on the drawings including, but not limited to the following:

71.18.1.2.1. 480 Volt Receptacles

71.18.1.2.2. 480 Volt Welder Switch/Receptacles



71.18.1.2.5. 600 volt Welder Switch/Receptacles


71.18.2.1. Luminaires shall be installed so as to avoid conflicts with ductwork or other interferences which would prevent proper utilization of light or cause deep shadow areas. The luminaire locations shown on the drawings may be altered to accomplish this result with approval of the Owner’s Representative.

71.18.2.2. The lighting circuit neutral and ground wires shall be installed as follows:

71.18.2.2.1. If the circuit is fed directly from a lighting panelboard to the luminaire/receptacle, with no intermediate junction box, the lighting circuit shall have a separate neutral and ground conductor installed to each luminaire/receptacle. Sharing of neutral with other circuits is not permitted. If multiple luminaires/receptacles are connected to the same circuit, then neutral conductor can be shared.

71.18.2.2.2. If a junction box is used, the lighting circuits shall have an appropriately sized neutral and ground conductors installed from lighting panelboard to the Junction box. Separate neutral and ground conductors shall be installed for each circuit from junction box to the luminaire/receptacle. Sharing of neutral with other circuits is not permitted. If multiple luminaires/receptacles are connected to the same circuit, then neutral conductor can be shared.

Note to User: Dow Code: L, Four conductor cables with Ground, cable is recommended for each three phase circuit from Panel to Junction box. Refer to the details G7C180501 to 06. User should create Junction box wiring diagrams based on above details.

71.18.2.3. Lighting Installation

71.18.2.3.1. The Contractor shall install and wire every item including lamps for the complete lighting system as shown on the drawings and as specified herein.

71.18.2.3.2. All lighting fittings shall be installed so that steel work and other equipment do not cause shadow areas.

71.18.2.3.3. The exact location of lighting fittings, switches, junction boxes, socket outlets etc. shall be proposed by the Contractor and agreed with the Owner’s Representative.

71.18.2.3.4. The centerline of building lighting switches shall be located 4’6" (1400 mm) above the working floor on the lock side of the door.

71.18.2.3.5. Luminaires shall be well secured and aligned in a neat and workman like manner. [endnoteRef:46]Fixed lighting fixtures (luminaries) not directly supported by rigid conduit systems shall be solidly attached to the building structure and shall be installed and protected against physical damage. [46: 02-MAY-2013; MOC 2013_12764; By: Joerg Harenberg; Supersedes Issue Date 15-NOV-2012; Updated light fixture support requirements.]

71.18.2.3.6. If there is inadequate structural steel or interferences that prohibit mounting in location as detailed and dimensionally shown on drawings, the Contractor will contact the Owner’s Representative before installing luminaire.

71.18.2.3.7. HID lamps, louvers and parabolic lenses shall be handled and installed only with clean gloves and not with bare hands.

71.18.2.3.8. Recessed light luminaires shall be fed with a 6’0” (2 m), heat resistant 3wire cable with a plug. The socket shall be located behind the ceiling system.

71.18.2.4. Receptacle Installation

71.18.2.4.1. All receptacle and/or switched receptacles shall be securely fastened to the support members and capable of rough service.

71.18.2.4.2. Receptacle outlets in the same wall but in different rooms shall not be located back to back due to noise transmission.

71.18.2.4.3. [endnoteRef:47] Receptacle wiring terminations shall use the screwed terminal connections. The optional "push-in" style connections shall not be used. [47: 22-MAY-2009; MOC 2009_07400; By: Gary Johnson; Supersedes Issue Date 04-NOV-2008; Added Paragraph 71.18.2.4.3.]

71.18.2.4.4. Labeling of Switches and Receptacles shall be in accordance with Table 71.7 and shall indicate panelboard number and circuit number.

71.18.3. Lighting Material specifications

71.18.3.1. The Contractor shall install lamps. Lamp ballast, voltage, wattage and type as specified on the drawings and Manufacturer’s instructions.

71.18.3.2. Incandescent luminaires shall be lamped with extended life lamps as specified herein or on drawings.

71.19. ELECTRICAL HEAT TRACING


71.19.1.1. [endnoteRef:48]The following Heat Tracing shall be installed as shown and specified in the drawings, practices, Manufacturer’s instructions, and as specified herein. [48: 30-MAR-2011; MOC_2011-10004; By: Pat Moran; Supersedes Issu

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