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CAllied Cables
1
INTRODUCTION
The foundation of Allied Group was laid by Mr. Aftab Ahsan in the year 1981, keeping in view the
growing demand of quality product of Manufacturing Copper Rod, Enameled Copper Wire and
Copper Strip. The Group Imported latest Furnace and plant for manufacturing Copper Rod. These
products initially were manufactured under the technical Collaboration of Hitachi Japan.
With the passage of time the Company groomed by providing quality product and making its own
position as market leader. The Company flourished Vertically & horizontally and by Grace of God
today we are the largest Manufacturer of Copper Rod with installed capacity of producing 80,000
Metric Tons per Annum. High Quality (Grade-A) LME Registered Copper Cathode is Continuously
Casted and hot rolled (Micro Processor Controlled) to produce Copper Rod of having purity of
99.99% which is basic raw material for all Wire & Cables Industries which includes House Wiring
Distribution & Power Cables, Enameled Copper Wires & Copper Strip Paper Coated & Bare and
The Copper Rod Produce by us conform to all International Quality Standards.
As stated above we are in the market for over 25 years producing Copper Rod & Copper
Enameled Wire, Our products are widely used in the entire country in almost all Electrical
equipments. It is being tried & considered as most satisfactory product by our valued clients, In
this connection we reproduce on next pages three of the country's largest producers of best
quality equipments in Pakistan namely Siemens Pakistan Engineering Co. Ltd, Phillips Electrical
Industries of (Pakistan) Ltd. and Pak Elektron Ltd. popularly known as PEL.
The Company Goal is to accelerate further to use its best quality raw material in Pakistan resulting
in the reduction of cost with quality assurance by providing 99.99% pure quality Copper products
to produce Wire & Cables with the aim to reduce consumption of electricity by providing easy flow
of current with minimum resistance to reduce electricity Bill and optimum performance.
Telephone Cables.
(TECHNICAL COLLABORATION )
2
Oc tober 31 , 2005
TO WHOM IT MAY CONCERN
This is to certify that we purchased 'MOON STAR' Brand
Copper Enameled Wire from M/S. ALLIED INDUSTRIES HUB
(PVT) LTD., Karachi since 1995.
Our entire requirement for manufacturing of transformer
and motors have been fulfilled by them and we are fully
satisfy for the material supplied by them as per our
specifications.
Further certified that we have not received any complaint
In quality during these years.
PAKISTAN ENGINEERING CO. LTD
SIEMENS
SIEMENS
(Irfan Umar)(M.Sohail)
3
PHILIPS
PHILIPS
Philips Electrical Industries of Pakistan Limited
F-54, S.I.T.E., P.O. Box No. 7101, Karachi-75730. Tel: 021-2560071-82 Fax: 021-2563826 / 2562386
Jan 02 , 2003
TO WHOM IT MAY CONCERN
It is certified that we are procuring Enameled Copper Wire under the brand name 'Moon
Star' which is produced and supplied by M/s Allied Industries Hub (Pvt.) Limited,
Karachi.
We have been doing business with M/s Allied Industries since 1996 and maintain that our
entire requirements for Copper Wire have been fulfilled by them over these years with
the material being as per our specifications.
FAISAL RAZI AZEEM
Logistics Officer
Philips Lighting Pakistan
4
PAK ELEKTRON LIMITED Works :
Phones:Grams :E-mail :
14-Km, Ferozepur Road, Lahore-54760, Pakistan. G. O. O. Box : 1614, Lahore - 540005811952 - 57 (6 Lines) Telex : 44249 PEL PK.PELEKTRON Lahore Fax : 5810156- 5822682c f m @ p e l . i c c i . l h r . e r u m . c o m . p k
No. P&P/- Date 0 8 - 11 - 9 8
To WHOM IT MAY CONCERN
Certified that we have been getting EnamelledCopper Wire "Moon Star Brand" produced & supplied byM/s.Allied Industries Hub (Pvt) Limited, Karachi since1985. We have also been using their Allied Copper Rod for manufacturing of Copper Strip.
Our entire requirement for manufacturing of transformers for WAPDA & KESC have been full filled by them& we found the material to our entire satisfaction,
for PAK ELECTRON LIMITED
(S.M. USMANI)GENERAL MANAGER PROD. (T&M)
5
CAllied Cables
Cables for wiring installations 450/750 and 300/500 volt to BS 6004 (metric units)
have good physical and electrical properties
have bright colours for identification
are easy to handle and strip
are chemically inert (except in abnormal chemical concentrations)
are unaffected by dampness.
Allied Cables for wiring installations include conduit wires and flat surface wiring cables together witha range of circular multicore cables, which are made to Pakistan and British Standard qualityand dimensions are specified by renowned architects engineers and contractors for all type of domestic. Commercial, industrial and public buildings.
Allied Cables has been manufacturing Copper Rod & Enameled Wire since 1984 and are consistently expanding with passage of time. The cables described in this publication, which conform to the new British Standards in metric units, continue this progress in keeping with the legal adoption of metric standards in Pakistan.
LIST OF CABLES
PVC insulated, non sheathed general purpose cablesingle core 450/750 volts
PVC insulated, PVC sheathed light non flexible cables, circular single, twin, 3 core, 4-core and 5-core
300/500 volts
PVC insulated. PVC sheathed cables withoutearth continuity conductor, flat twin 300/500 volts
BritishStandard
Specification
BS 6004
BS 6004
BS 6004
Page No.
11
12-13
14
CAllied Cables
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ALLIED Wiring Cables satisfy the requirements of the most exacting installation and the needs of
contractors for reliable easy to instal and readily available supplies of wiring cables for all types of buildings.
ALLIED Wiring Cables are suitable for industrial, domestic, public and commercial buildings, farms and garages. They withstand effects of dempness, building materials, corrosive atmosphere and mechanical damage.
ALLIED Wiring Cables are pliable enough to adapt to any configuration of wall surface yet arerigid enough to permit threading through holes or along runs. They are easy to strip and to terminatein wiring fittings or accessories.
ALLIED Wiring Cables Provide all round performance, reliability and ease of handling. They arereadily available from local branches and depots and users can rely on the technical backing and service of the AC organization .
General
Allied Cables to metric dimensions comply with the following British Standards andare suitable for all installations conforming to the Institution of Electrical Engineers (IEE)Regulations for the Electrical Equipment of Building and the relevant British Standardcodes of practice:
BS 6004 :
BS 6360 :
BS 6746 :
PVC insulated cables (non-armoured) for electric power and lighting (metric units)
Copper conductors in insulated cables and cores (metric units)
PVC insulation and sheath of electric cables (metric units)
CAllied Cables
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Insulation materials
Allied Cables PVC compounds which comply with BS 6746. PVC is brightly coloured for identification, is easy to strip and does not support combustion. It has good resistance to chemical attack generally and resists attack by most building materials, but it should not be allowed to remain in permanent contact with oils, greases, fats or creosote, nor with the fumes of substances or solutions used as wood preservantIt does not support mould growth and is suitable for used in tropical climates, but cables insulated other than Black PVC, should not be permanently exposed to direct tropical sunlight. PVC graduallyhardens as the temperature decreases but recovers its flexibility on returning to normal temperature
Polyvinyl chloride (PVC)
Operating temperatures Maximum service operating temperatures of 70 C for PVC insulated wiring cables and conduit wires indicate that a normal service life can be expected when the combined ambient temperature and the conductor temperature due to the current does not exceed these figures. PVC compound will withstandoccasional overloads of short duration due to fault currents without deterioration. If PVC wiring cables are being installed at temperatures below 0 C, care must be taken not to bend them sharply. It is preferable
to keep the cable in a warm place for 24 hours before�installation�under�these�condition.�
Current ratings In normal practice, the recommended current rating as given in the IEE Regulations for the Electrical Equipment of Buildings, should be followed. In cases of doubt or in exceptional circumstances, advice should be sought from the Allied technical advisory service.
Cable diametersThe diameters of the PVC cables given in this publication correspond to the nominal diameters given in BS 6004 subject to tolerances allowed.
CAllied Cables
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Installation
PVC (non-armoured) wiring cable to metric standards should be installed in accordance withIEE regulations, the following dimensions for fixing criteria being applicable.
Fixing criteria
Bending radius (IEE REGULATIONS)
Internal radil of bends for fixed wiring
Cable diameter or axis dimensions Bending radius
Not exceeding 10 mm10 mm to 25 mmexceeding 25 mm
75 mm100 mm450 mm
Spacing of clips(IEE REGULATIONS)
Overall diameter of cable* Horizontal runs Vertical runs
not exceeding 9 mm
exceeding 9 mm notexceeding 15 mm
exceeding 15 mm notexceeding 20 mm
exceeding 20 mm notexceeding 40 mm
250 mm
300 mm
350 mm
400 mm
400 mm
400 mm
450 mm
550 mm
ConstructionPVC wiring cables Conductor
Core insulation / identification
Plain annealed copper strand or single wire complying with BS 6360.
PVC complying with BS 6746 applied by extrusion and coloured as follows
for both circular and flat cables:
Single core - Red or black
Four core - Red, yellow, Two core - Red and black Three core - Red, yellow, blue
blue, black Five core - Red, yellow, blue, black and green
Sheath
PVC complying with BS 6746 applied by extrusion. Flat cables sheath coloured black sizes21 mm2 to 16 mm Circular cables single sheath coloured black or Grey on red or black core.
2 2Sizes 1.0 mm to 35 mm Multicore, twin, three, four and five core cables sheath coloured black2 2on all sizes 1 mm 16 mm .
PVC Conduit wires Conductor Plain annealed copper strand or single wire complying with BS 6360
Insulation
PVC complying with BS 6746 applied by extrusion, coloured red, black, yellow, blue, green.
Voltage The rated voltages recognized for the purpose of BSS 6004 are 300/500 V Multicore or 450/750 volts Single Core
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TABLE 1
Details of conductors
Can be supplied both in solid and stranded formations.
These are supplied in COMPACTED with different wire sizes and varying number of wires, which
will not affect conductor resistance at 20 C.
Note: Compacting sometimes entails a change in the number and size of wires therefore conductor sizes
should be designated by nominal cross - sectional area rather than by stranding configuration.
Nominal
conductor
area Minimum
Number
of wires
Nominal diameter of
conductor
Maximum
plain conductor
resistance at 20 C
2mm ohm/1000 m
Compacted
circular
mm
1.13
1.38
1.78
2.55
3.12
4.05
5.10
6.42
7.65
8.90
10.70
12.60
14.21
15.75
17.64
20.25
22.68
25.65
28.80
32.70
-
-
-
-
-
-
-
-
7.34
8.54
10.27
12.10
13.64
15.12
16.93
19.44
21.77
24.63
27.98
31.45
18.1
12.1
7.41
4.61
3.08
1.83
1.15
0.727
0.524
0.387
0.268
0.193
0.153
0.124
0.0991
0.0754
0.0601
0.0470
-
-
1
1
1
7
7
7
6
6
6
6
12
15
18
18
30
34
34
61
61
91
Circular
mm
1.0
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
185
240
300
400
500
630
+
+
*
*
*
*
*
*
*
*
*
*
*
Packaging Single Core Wiring cables are normally supplied in Box of 90 Metres length and others
supplied in coils.
Technical advisory serviceAllied Cables maintains a free technical advisory service for the selection and application of any type of
cable for further information please contact our Marketing Office.
CAllied Cables
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TABLE 2
CIRCULARPVC insulated non-sheathed general purpose Cable 450/750 volt
- Single core
Nominal cross-sectional areaof conductor
mm 2
Radialthickness of insulation(nominal)
mm
Mean overalldiameter
(upper limit)
mm
Approximateweight of
cable
kg/100 m
1.0
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
185
240
300
400
500
630
0.7
0.7
0.8
0.8
0.8
1.0
1.0
1.2
1.2
1.4
1.4
1.6
1.6
1.8
2.0
2.2
2.4
2.6
2.8
2.8
3.05
3.3
3.9
4.8
5.4
6.8
8.0
9.8
11.0
13.0
15.0
17.0
19.0
21.0
23.5
26.5
29.5
33.5
37.0
41.0
1.55
2.13
3.45
5
7
12
18
28
38
51
72
99
123
151
188
246
307
394
493
629
- Please reffer to Table 1 for details on conductor size
- Size 1.0 mm2, 1.5mm2, 2.5mm2 are manufactured in solid conductor but on special request can be made in stranded conductor Cable Sizes 3/029, 3/036, 7/029 are also manufactured by us.
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TABLE 3
CIRCULARCircular PVC insulated PVC sheathed 300/500 volt - Single Core
Nominal conductor
area mm 2
Radialthickness of insulation
mm
Approxthicknessof innercovering
mm
Radialthicknessof sheath
mm
Mean Overall diameter
LowerLimit
UpperLimit
mm
Approximateweight
of cable
kg/100 m
1.01.52.546
10162535
0.6
0.7
0.8
0.8
0.8
1.0
1.0
1.2
1.2
-
-
-
-
-
-
-
-
-
0.8
0.8
0.8
0.9
0.9
0.9
1.0
1.1
1.1
4.4
4.8
5.7
6.5
7.2
8.0
10.0
12.1
13.2
2.8
3.4
4.9
7.5
9.9
15.5
22.5
34.0
44.5
3.8
4.2
4.8
5.4
6.0
7.2
8.4
10.0
11.0
1.01.52.546
1016
0.60.70.80.80.81.01.0
0.40.40.40.40.40.60.6
1.21.21.21.21.21.41.4
7.68.49.6
10.511.515.016.5
8.510.011.212.013.017.020.0
8111521264360
Two Core
Three core
1.01.52.546
1016
0.60.70.80.80.81.01.0
0.40.40.40.40.40.60.8
1.21.21.21.21.41.41.4
7.88.8
10.011.012.515.518.0
9.210.512.013.015.519.021.5
10131825345477
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TABLE 3
CIRCULARCircular PVC insulated PVC sheathed 300/500 volt - Four Core
Nominal conductor
area
mm 2
Radialthickness of insulation
mm
Approxthicknessof innercovering
mm
Radial thickness of sheath
mm
Mean overall diameter
LowerLimit
UpperLimit
mm
ApproximateWeightof cable
Kg/100m
1.0
1.5
2.5
4
6
10
16
0.6
0.7
0.8
0.8
0.8
1.0
1.0
0.4
0.4
0.4
0.4
0.6
0.6
0.8
1.2
1.2
1.2
1.4
1.4
1.4
1.4
8.4
9.6
11.0
12.0
14.0
17.0
20.0
9.8
11.5
13.0
14.5
17.0
20.5
23.5
12
16
23
30
44
68
98
1.0
1.5
2.5
4
6
10
0.6
0.7
0.8
0.8
0.8
1.0
0.4
0.4
0.4
0.6
0.6
0.6
1.2
1.2
1.2
1.4
1.4
1.4
9.2
10.0
11.5
13.5
15.5
18.5
10.5
12.0
14.0
16.0
18.5
22.0
14
18
26
38
54
82
Please reffer to Table 1 for details on conductor size
- Five core
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TABLE 4
FLAT
Flat PVC insulated PVC sheathed 300/500 volt - Two core
Nominal
conductor
area
2mm
Radial
thickness of
insulation
mm
Radial Thickness
of sheath
mm
Mean overall
diameter
mm
Approximate
weight
Kg/1000 m
1.0
1.5
2.5
4
6
10
16
0.6
0.7
0.8
0.8
0.8
1.0
1.0
0.9
0.9
1.0
1.0
1.1
1.2
1.3
6.7
7.2
8.6
10.7
12.0
14.9
17.2
4.4
4.6
5.4
6.5
7.3
8.8
10.1
x
x
x
x
x
x
x
54
67
99
150
205
325
465
Pleas reffer to Table 1 for details on conductor size
CAllied Cables
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Current ratings for insulated cablesThe current ratings quoted in Tables 5 to 7 aregenerally as detailed in the relevant tables of the IEE Regulations. The head of each tablestates whether the current ratings relate to close or coarse excess-current protection. Where the class of excess-current protection differs from that stated in the heading of the table the appropriate rating factor must be applied.
Close excess-current protection Excess-current protection which will operate within fourhours at 1.5 times the designed load current of the circuitwhich it protects. Devices affording close excess-currentprotection include:
(I)
(ii)(iii)
(iv)
BS 88 fuses fitted with fuse links marked to indicate a class P or class Q1 fusing factor. Fuse fitted with fuse-links complying with BS 1361.Miniature and moulded-case circuit-breakers complying with BS 3871. Circuit-breakers set to operate at an overload not exceeding 1.5 times the designed load current of circuit.
Coarse excess-current protection
Excess-current protection which will not operate withinfour hours at 1.5 times the designed load current of the circuit which it protects. Devices affording coarse excess. Current protection include:
(i)
(ii)
BS 88 fuses fitted with fuse-links marked to include aclass Q2 or class R fusing factor. Semi-enclosed (rewirable) fuses complying withBS 3036: 1958.
The IEE “Defined conditions” of installations
The current ratings in the columns of the tables headed
“Defined conditions” apply to cables run under the
conditions defined below.
For cables spaced by distances less than those described
below, the current ratings in the columns headed “Clipped
direct to a surface....” Should be applied.
(a) Single core cables
(1) Two or three single core cables are installed one above
the other, fixed to the vertical surface of a wall or open
cable trench as follows, the distance between the wall and
the surface of the cable being at least 20 mm in each
instance.
Cables in which the conductor cross-sectional area does2not exceed 185 mm are installed at a distance between
centres of twice the overall diameter of the cable
Cables in which the conductor cross-sectional area2exceeds 185 mm are installed at a distance between
centres of about 90 mm.
The ratings for two cables may be applied with safety in
instances where such cables are installed in horizontal
formation on brackets fixed to a wall, spaced as indicated
above or touching throughout
(2) Three single core cables are installed in trefoil formation
fixed to the vertical surface of a wall or open cable
trench, the cables touching throughout and the distance
between the wall and the surface of the nearest cable being
at least 20 mm, or, alternatively, three single core cables
are installed in trefoil formation and laid on a non-metailic
floor, the cables touching each other and the floor through-
out.
The ratings given apply provided that the sheaths of single core metal sheathed cables are electrically bonded ateach end of the run.
The cables are assumed to be remote from iron, steel, or
ferro-concrete, other than the cable supports.
(B) Multicore cables,
(1) Cables of all types other than single core cables are
installed singly, fixed to the vertical surface of a wall or
open cable trench, the distance between the surface of the
cable and the wall being at least 20 mm in every instance.
Voltage drop.
Voltage drop is normally only of importance for cables of
voltage rating not exceeding 450/750 volts. If the installation
is to be in compliance with IEE Regulations, it is stipulated that
the voltage drop for any particular cable run must be such that
the total voltage drop in the circuit of which the cable forms a
part does not exceed 2 ½ per cent of the nominal voltage,
(i.e. 6 volts for a single-phase 240 volt supply).
Values of voltage drop are tabulated for a current of one
ampere for a run, i.e. For a distance of 1 m along the route
taken by the cables. And represent the result of the voltage
drops in all the circuit conductors. For balanced three.
Phase ac circuits, the values relate to the line voltage. For
any given run the values need to be multiplied by the length
of the run (in metres) and by the current (in amperes) that
the cables are to carry.
Example: Consider a route of 200 metres of cable, to be
installed in air and to carry 100 ampere load. The supply
voltage being 415 volt 3Ph. 50 Hz. And the cable to be
stranded copper PVC/SWA/PVC.
Let Vd be the voltage drop in volts
Vd=mV x I x L
1000or: mV=
Vd x 1000
1 x L
Where IL
mV
===
Current in amperesRoute length in metresApproximate voltdrop/ampere/metre
Maximum permissible volt drop = 2 ½ per cent of 415 volts = 10.4 volts
Substitute for current, route length and maximum permis-sible volt drop
then mV =10.4 x 1000
200 x 100= 0.52 mV
Where the actual current to be carried differes greatly fromthe current rating tabulated, the results obtained by multi-plying the tabulated voltage drop values in this wayare approximate only: for a more accurate assessment, allowance should be made for the change in conductorresistance with operating temperature.
It is considered that the most practical approach to thequestion of voltage drop is to tabulate those values whichrelated to the worst conditions, viz, where the phase angleof the load is equal to that of the cable. However, it shouldbe noted that in many cases knowledge of phase angle of the load is not readily available. For cables up to and
2including 120 mm the tabulated voltage drop values apply with sufficient accuracy where the power factor of the loadlies between 0.6 lagging and 1.0, and for large cables where the power factor of the load does not exceed 0.8 lagging. In cases outside this range the tabulated voltage values may be unduly conservative, and more exact calculations should be considered.
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15
Current rating factors For group of single core cables
Referring to Tables 5 and 6
For groups of c ircui ts unenclosed, the single circui t rat ings apply provided that:
(1) the horizontal clearance between circuits is:
(a) not less than six t imes the overall diameter of an individual cable, and
(b) not less than the overall width of an individual circuit, except that the horizontal
clearance need not in any case exceed 150 mm and
(2) the vertical clearance between circuits is not less than 150 mm and
(3) i f the number of circuits exceeds four, they are installed in a horizontal plane.
In all other cases, unless a more precise evaluation of current ratings has been made, based on experimental
or calculated data, the fol lowing factors are applicable:
Number of circuits (pairs of cables, single phase ac or dc)
Three cables per circuit, or four
where one is the neutral, three
phase ac
rating factor
2
0.80
3
0.69
4
0.62
5
0.59
6
0.55
8
0.51
10
0.48
12
0.43
14
0.41
16
0.39
18
0.38
20
0.36
Three cables per circuit, or four,
where one is the neutra, three
phase ac
Rating factor
Not applicable to three phase.
For groups of twin and multicore cables
Referring to Table 7
For groups of cables unenclosed, the single circuit ratings apply provided that:
(1) the horizontal clearance between cables is not less than six t imes the overall diameter of an individual
cable, except that the horizontal clearance need not in any case exceed 150 mm and
(2) the vertical clearance between cables is not less than 150mm, and
(3) i f the number of cables exceeds four, they are installed in a horizontal plane.
In all other cases, unless a more precise evaluation of current rating has been made, based on
experimental work or calculated data, the fol lowing factors are applicable:
Number of cables
Rating factor
Number of cables
Rating factor
2
0.80
10
0.48
3
0.70
12
0.45
4
0.65
14
0.43
5
0.60
16
0.41
6
0.57
18
0.39
8
0.52
20
0.38
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Table 5
Current ratings and associated voltage drop/amp/metre PVC insulated, non-armoured cables, with or without sheath, with copper conductors
Single core 450/750 voltConditions of Installation
Single circuit current ratings under conditions as listed below with
coarse excess-current protection. For other than single circuit and For close excess-current protection see rating factors below.
Ambient temperature 30 C
Nominalcrosssectionalarea
2 cables, single phaseac or dc
Currentrating
3 or 4 cables threephase ac
Volt drop/amp/metre
Volt drop/amp/metre
Volt drop/amp/metre
Volt drop/amp/metre
Currentrating
Currentrating
Currentrating
2 cables, single phaseac or dc
3 or 4 cables three phase ac
Clipped direct to a surface or on a cable tray.
bunched and unenclosed
2mm amp ampmV mV mV mVamp amp
1.0
1.5
2.5
10
16
25
35
11
13
18
24
31
42
56
73
90
40
27
16
10
6.8
4.0
2.6
1.6
1.2
9
11
16
22
28
39
50
66
80
35
23
14
8.8
5.9
3.5
2.2
1.4
1.0
13
16
23
30
38
51
58
89
109
40
27
16
10
6.8
4.0
2.6
1.6
1.2
12
15
20
27
34
46
61
80
98
35
23
14
8.8
5.9
3.5
2.2
14
1.0
Total volt drop between the consumer’s terminals and anyother point in the installation must not exceed 2.5 per cent of thenominal voltage.
The ratings in columns 3 and 5 relate to cables in metal ornon-metallic conduit and trunking. For cables in undergroundpipes and ducts, see IEE Regulations.
Current rating factors (see page 11)
For class of excess current protection The ratings tabulated may be multiplied by 1.33 where closeexcess-current protection can be assured as perIEE Regulations,
For ambient temperature Ambient temperatureRating factor for cables having coarse excess current protection Rating factor for cables having close excess current protection
25 C1.021.06
35 C0.970.94
40 C0.940.87
45 C0.910.79
50 C0.880.71
55 C0.770.61
60 C0.630.5
65 C0.440.35
Bunched and enclosed in conduit or trunkingConductor
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17
Table 6
Current ratings and associated voltage drop/amp/metre PVC insulated, non-armoured cables, with or without sheath, with copper conductors
Single core 450/750 voltConditions of Installation
Single circuit current ratings under conditions as listed below with
coarse excess-current protection. For other than single circuit and For close excess-current protection see rating factors below.
Ambient temperature 30 C
2 cables, single phase ac or dc
3 or 4 cables,three phaseac
2 cables, single phaseac or dc
3 or 4 cables, three phaseac
Flat or vertical (2 cables, single phase ac or dc, or 3or 4 cables, three phase ac)
Trefoil (3 cables, three phaseac)
Current Volt droplrating amp/metre
ac dc
Currentrating
Voltdrop/amp/metre
Currentrating
Volt drop/amp/ metre
ac dc
Currentrating
Voltdrop/amp/metre
Currentrating
Volt drop/ amp/ metre
Singlephaseac
dc Threephase ac
Currentrating
Voltdrop/amp/metre
2mm amp amp amp amp amp ampmV mV mV mV mV mV mV mV mV mV 2mm
1 2 3 45 6 7 8 9 10 11 12 13 14 15 16 17 18
507095120
150185240300
400500630
145185230260
----
---
0.970.710.560.48
0.910.630.450.36
125163195220
0.840.620.480.42
175220270310
0.930.650.480.40
355405480560
680800910
0.340.290.240.22
0.200.180.17
0.910.630.450.36
0.290.240.180.14
0.120.0860.068
160200240280
320365430500
610710820
----
---
----
---
----
---
----
---
0.820.590.450.38
0.340.300.270.25
0.240.230.22
195240300350
410470560660
8009101040
0.950.680.520.44
0.390.350.360.33
0.300.280.26
0.910.630.450.36
0.290.240.180.14
0.120.0860.068
0.850.620.490.43
0.390.360.380.35
0.330.310.30
170210260300
350400480570
680770880
0.800.590.420.34
0.290.250.220.19
0.170.160.15
507095120
150185240300
400500630
Total volt drop between the consumer’s terminals and anyother point in the installation must not exceed 2.5 per cent of thenominal voltage Please Refer IEE Regulations.
The ratings in columns 3 and 5 relate to cables in metal ornon-metallic conduit and trunking.
Current rating factors (see page 11)
For class of excess current protection The ratings tabulated may be multiplied by 1.33 where closeexcess-current protection can be assured.
For ambient temperature Ambient temperatureRating factor for cables having coarse excess current protection Rating factor for cables having close excess current protection
25 C1.021.06
35 C0.970.94
40 C0.940.87
45 C0.910.79
50 C0.880.71
55 C0.770.61
60 C0.630.5
65 C0.440.35
Bunched and enclosed in conduitor trunking
Clipped direct to a surface or on acable tray, bunched and unenclosed
Defined conditions (IEE Reg.) Con-ductor
Nominalcross-sectionalareaof con-ductor
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18
Table 7
Current ratings and associated voltage drop/amp/metre
PVC insulated, sheathed, non-armoured cables with copper conductorsTwin and multicore 300/500 volt
Conditions of installation
Single circuit current ratings under conditions as listed below with
coarse excess-current protection. For other than single circuit and For close excess-current protection see rating factors below.
Ambient temperature 30 C
Total volt drop between the consumer’s terminals and anyother point in the installation must not exceed 2.5 per cent of thenominal voltage (see IEE Regulations. )
The ratings in columns 3 and 5 relate to cables in metal ornon-metallic conduit and trunking. For cables in undergroundpipes and ducts, see IEE Regulations,
Current rating factors (see page 11)
For class of excess current protection The ratings tabulated may be multiplied by 1.33 where closeexcess-current protection can be assured.
For ambient temperature Ambient temperatureRating factor for cables having coarse excess current protection Rating factor for cables having close excess current protection
25 C1.021.06
35 C0.970.94
40 C0.940.87
45 C0.910.79
50 C0.880.71
55 C0.770.61
60 C0.630.5
65 C0.440.35
Nominalcross-sectionalarea
2mm amp
Conductor Enclosed in conduit or trunking*
One twin cable,with or withoutearth-continuityconductor, singlephase ac or dc
One three corecable, with orwithout earth-continuity con-ductor, or onefour core cable, three phase
One twin cable,with or withoutearth-continuityconductor, singlephase ac or dc
One three corecable, with orwithout earth-continuity con-ductor, or onefour core cable, three phase
One twin cable,with or withoutearth-continuityconductor, singlephase ac or dc
One three corecable, with orwithout earth-continuity con-ductor, or onefour core cable, three phase
Clipped direct to a surface or ona cable tray and unenclosed
Defined conditions (IEE Reg.)Conductor
Current Voltdrop/rating amp/ metre
Current Voltdrop/rating amp/ metre
Current Voltdrop/rating amp/ metre
Current Voltdrop/rating amp/ metre
Current Voltdrop/rating amp/ metre
Current Voltdrop/rating amp/ metre
amp amp amp amp ampmV mV mV mV mV mV 2mm
1.01.52.5
4.0
6.0
10
1625
35
111318
34
30
40
5360
74
412817
11
7.0
4.1
2.61.7
1.2
91216
22
27
37
4753
65
352415
9.1
6.0
3.6
2.21.5
1.0
121521
27
35
48
6471
87
412817
11
7.0
4.1
2.61.7
1.2
101318
24
30
41
5462
72
352415
9.1
6.0
3.6
2.21.5
1.0
---
---
-
-
86
105
---
---
-
-
1.7
1.2
---
-
-
---
-
-
72
92
1.5
1.0
1.0
1.5
2.5
4.0
6.0
10
1625
35
---
---
Flat
cables
only
Circulrar
Cables
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