code citations – how to find · copyright 1999-2015 dan dudley 250.53(a)(2) (2) supplemental...

Copyright 1999-2015 Dan Dudley

Code Citations – how to find110.14(C)(1)(a)

Chapter (1)Article (110)

Section (14)

Subsection (C)

Subsection (1) under (C)

Subsection (a) under (1)

T.220.55

Table

8/29/2016 Copyright 2016 Dan Dudley & Associates


Two of 198 code violations in a 1999 5mil school gym

Condensatedrain andwater on

floor

314.25Covers to be on

all finishedboxes

110.12(A)Openings to be

closed 110.3(A)(8)Safeguarding of

persons



More violations314.23Independent

support for boxes

314.25Covers to be

on all finishedboxes

110.12(A)Openings to be

closed

314.29Boxes to beaccessible

A/C Ductwork isnot an approved

support for conduit

358.30Fastening of

conduit



300.11Ceiling support

wires not allowedas conduit support

300.11Support wires

must be securedat both ends and

identified asconduit supportwires separatefrom the ceiliggrid support

wires



EMT358.30(A)

Support within3 ft. of box is

required

Ceiling tiles arenot approvedfor conduit

support



#9ceiling support

wire is notapproved for

conduit support



358.30(b)EMT SUPPORTrequired within

3ft oftermination

Box needs to besupported

independentlysince EMT is not

approved forsupport



The BUMPER onyour truck is notapproved as aconduit bender



Plumbers strapis not approvedfor BONDING

Conduitrequires

support otherthan connector

to box orenclosure



More dangerous violations



Factoryends leftHOT andexposed

277 Volts onyellow and

orange leads



Clearance… WhatClearance ???

110.26(F)(2)

No Less than 3 ftof working

clearance in frontof the equipment.

ArchitecturalBarrier is illegally

located in the“Dedicated

Equipment Space”



Framing member isa permanent

support

Terminationlocation is through

front panel

110.26(F)(2)

No Less than 3 ftof working

clearance in frontof the equipment.



Not a GroundedReceptacle

Not GFCI protected

Enclosure notlisted and/or

labeled for the use

Receptacle notmounted properly

ImproperConductorEntrance

Conductor notproperly secured


Copyright 1999-2015 Dan DudleyPlumbing Elbows ??

Plumbing pipe andfittings are notapproved as araceway forconductors.



What the heck,they won’t everneed to use thatfire escape ??!!

225.7(C)“…Not less than 3ft from windows,

platforms, fireescapes and the

like…”



This truck won’t ever be moved ??

PortableServce



Individual InsulatedConductors are onlyallowed in Dwellings

if they are in aRaceway.



Exam – vs – Field Experience

• The following slides are information asked on over 90% of the variouselectrical exams across the U.S.

• Jobs electricians perform everyday with the test related questionsand key information points



Door must open90 degrees

Four things usually asked:

Headroom 6 1/2ft

Space in front 3ft

Working clearance ≥ 30in

Door open ≥ 90 degrees

≥ = “not less than”



Article 110.26(A)(2), (3), (E)



Different System Grounded Conductors

NEC Section 200.6(A) & (B)



Multiwire Circuits – More than one Voltage System

NEC Section 210.5 (C)(3)



250.53(A)(3)



250.53(A)(2)

(2) Supplemental Electrode Required. A single rod, pipe,or plate electrode shall be supplemented by an additionalelectrode of a type specified in 250.52(A)(2) through(A)(8). The supplemental electrode shall be permitted to bebonded to one of the following:(1) Rod, pipe, or plate electrode(2) Grounding electrode conductor(3) Grounded service-entrance conductor(4) Nonflexible grounded service raceway(5) Any grounded service enclosure

Exception: If a single rod, pipe, or plate grounding electrodehas a resistance to earth of 25 ohms or less, thesupplemental electrode shall not be required.

(3) Supplemental Electrode. If multiple rod, pipe, or plateelectrodes are installed to meet the requirements of thissection, they shall not be less than 1.8 m (6 ft) apart.



250.52(3)

“UFER” orConcreteEncasedElectrode



250.53(G)



250.52(B)(2)

250.52(A)(5)



250.66(A)

•Connections to Rod, Pipe, or Plate Electrodes.Where the grounding electrode conductor isconnected to rod, pipe, or plate electrodes aspermitted in 250.52(A)(5) or (A)(7), that portionof the conductor that is the sole connection tothe grounding electrode shall not be requiredto be larger than 6 AWG copper wire or 4AWG aluminum wire.



Not enoughsurface area incontact to carry

fault current

250.92(B)



Various methodsof bonding



Service Bonding

Article 250.92(A) & (B)



Zinc Plated – Pan Headself tapping screws arenot listed for grounding

250.8(A)



General Wiring MethodsNEC 518.4(A)



Article 300.14



2014 NEC change: Max number ofreceptacles on branch circuits otherthan general lighting and outlet circuits



Number of Circuits Commercial Buildings

Article 220.18


Copyright 1999-2015 Dan DudleyNote use of 60°C ampacity of #6 THHN

210.20(a)

60 A Protection Device

#6 AWG THHN Cu



30 amp single itemcircuit =80%


Copyright 1999-2015 Dan DudleyArticle 210.12(b)

All 120-volt, singlephase, 15- and 20-

ampere branchcircuits supplyingoutlets installed indwelling unit family

rooms, dining rooms,living rooms, parlors,

libraries, dens,bedrooms, sunrooms,

recreation rooms,closets, hallways, or

similar rooms orareas shall be

protected by a listedarc-fault circuit

interrupter,combination-type,installed to provideprotection of thebranch circuit.



230.9



230.24(A)



230.24(A)Exceptions1,2 and 3


code citations – how to find · copyright 1999-2015 dan dudley 250.53(a)(2) (2) supplemental...

Documents