CABLES
&
TABLES
Based on BS 7671:2001
Pakistan Cables
FOREWORD
On the occasion of 50th Anniversary of Pakistan Cables
we are proud to present the latest and completely revised version of
“CABLES AND TABLES” which is a handy reference for our many
friends concerned with the installation of electrical equipment.
This booklet has a long history as it was first published
by Pakistan Cables in 1954 and thereafter it was regularly
updated and printed on various occasions in 1967, 1970 (the Metric
version), 1985, 1992 and 1999.
This latest version includes revisions and additions based on
BS 7671:2001 “Requirements for Electrical Installations”
IEE Wiring Regulations, Sixteenth Edition. The main departure from
previous practice, and we believe, the fact that will increase the utility
Urdu translation to the text matter.
We would also like to put on record our acknowledgment
and gratitude to Engineer Wali Jan of M/s. Wali Jan Associates, in
putting this together this latest edition of Cables & Tables. It was not
only his technical expertise, but also dedication to the project which
deserves particular mention.
We would also like to reiterate our policy of not compromising
on quality for which our products are much acclaimed.
We welcome your valued suggestions for further improvement
in the publication.
Kamal A.Chinoy
Chief Executive
CABLES
AND
TABLES
(METRIC)
(2007)
Pakistan Cables Limited
B/21 S.I.T.E. KARACHI-75700
Trusted not to Compromise
Pakistan Cables Limited, the country’s oldest and most reputable cable manufacturer, was established
50 years ago in 1953 under the sponsorship of BICC pIc of United Kingdom and the Chinoy family. In the
subsequent five decades, Pakistan Cables has earned a reputation for itself as a market leader in the industry
and as a company that does not compromise on quality. As a result, the company has gained a position as
being the premier cable manufacturer in the country.
Pakistan Cables is a Public Limited Company and was listed on the Pakistan Stock Exchange as early as 1956,
when only 51 companies in Pakistan were public. The company has repeatedly received awards from Karachi
Stock Exchange and Management Association of Pakistan.
Pakistan Cables’ manufacturing facilities and head office are located in Karachi on an 11.5-acre site. It presently
employs over 350 people. It has regional office in Lahore and branch offices in Rawalpindi, Multan, Abbottabad,
Peshawar and Quetta. The company ’s distribution network covers 35 cities all over Pakistan.
The company manufactures the following products:
lElectrical Wires, Cables and Conductors
lAnodized Aluminium Profiles
lOxygen Free Copper Rod
1953
Introduced General Wiring Cables with PVC insulation for the first time in Pakistan. 1960
Started manufacturing of General Wiring Cables with Natural Rubber Insulation.
Established Power Cable Factory for manufacture of Low Voltage Armoured
Cables up to 3.3 KV for the first time in Pakistan.
Installed 2000 tons Aluminium Rod Extrusion plant with German technology.
1968
Manufactured Field Communication Cables for use by Pakistan’s Armed Forces.1974
Received the Top 25 Companies Award from Karachi Stock Exchange.
1978
1979
Again Received Top 25 Companies Award from Karachi Stock Exchange. 1980
Received Corporate Excellence Award by Management Association of Pakistan. 1982-84
Launched Aluminium extruded sections comprising pipes & curtain railings .
Awarded to the 6 best managed companies.
Established Anodizing Plant for manufacturing of Aluminium Doors & Window Sections.
Introduced for the first time in Pakistan Medium Voltage 15 KV XLPE cables
fully type tested by KEMA,Holland for supply to KESC.
1984
Setup a state-of-the-art plant to manufacture High Conductivity Oxygen
Free Copper Rod .
1996
Became the first 1S0 - 9002 certified cable manufacturer in Pakistan.
1997
1998
Received Achievement Award for outstanding performance in 1996-97
presented by the President of Pakistan.
Became the first only cable and aluminium manufacturer in Pakistan to be
certified for the ISO 9001 : 2000 version.
2000
Introduced LV XLPE cables fully type tested by KEMA, Holland for the first time in Pakistan.
2001
2003
Introduced powder coated Aluminium Profiles.
Commemorated 50th Anniversary.
Achieved net sales of over Rs.1 billion.
Achieved net sales of over Rs.2 billion.
2004
2005
Table of Contents
Page No.
INTERNATIONAL SYSTEMS OF UNITS:
(S1 base units,S1 drive units in electrical engineering,
S1 prefixes expressing decimal factor).
1
Weights & Measures.
Maximum capacity of conduits Steel or PVC.
Minimum bending radius & spacing of support for cable in accessible position.
Electrical load demand for different type of occupancies volt Amps.
Spacing for support of conduits.
Minimum size of copper earthing leads,bonding leads & earth conduit.
Physical dimensions of cables.
Copper wire flexible cable conductors, copper wire circular non flexible.
2-3
4
5
6
7
8-9
10
CURRENT CAPACITY & VOLTAGE DROPS:
Single core PVC insulated cables non armoured with or without sheath
(Table 4D1A & 4D1B)
11-12
Multicore PVC insulated cables non armoured
(Table 4D2A & 4D2B )
13-14
Single core PVC insulated cables non magnetic armoured
(Table 4D3A & 4D3B)
15-16
Multi core PVC insulated cables armoured
(Table 4D4A & 4D4B)
17-18
Single core XLPE insulated cables non armoured with or without sheath
(Table 4E1A & 4E1B)
19-20
Multicore XLPE insulated cables non armoured
(Table 4E2A & 4E2B)
21-22
Single core XLPE insulated cables non magnetic armoured
(Table 4E3A & 4E3B)
23-24
Multicore XLPE insulated cables armoured
(Table 4E4A & 4E4B)
25-26
Correction factors for cables installation methods 18,19 & 20
(Table 4B3)
Colour Coding.
Graph of short circuit rating.
Cables laid direct in ground.
Schedule installation methods of cables (
Laying , Handling & Storage of power cables (
Fundamental requirements for safety(
List of dealers / distributers (Pakistan Cables)
27
)
)
)
28
29
30
31-36
37-40
41-43
44
THE INTERNATIONAL SYSTEM OF UNITS (SI)
SI Base Units
Quantity
Name of Unit
Symbol
Length
meter
m
Mass
kilogram
kg
Time
second
s
Electric current
ampere
A
Thermodynamic temperature
kelvin
K
Amount of Substance
mole
mol
candela
cd
Luminious intensity
SI Derived Units Used in Electrical Engineering
SI unit
Quantity
Symbol
Expression
in terms of
other units
hertz
newton
pascal
Hz
N
Pa
N/m²
s-1
m.kg.s-2
m-1 .kg.s-2
joule
watt
J
W
N.m
J/s
m².kg.s -2
m².kg.s -3
coulomb
C
A.s
s.A
V
F
W
S
Wb
T
H
lm
Lx
Bq
Gy
W/A
C/V
V/A
A/V
V.s
Wb/m²
Wb/A
Name
Frequency
Force
Pressure, stress
Energy, work, quantity
of heat
Power, radiant flux
Quantity of electricity
electrical charge
Potential difference
electrical potential
electromotive force
Capacitance
Electric resistance
Conductance
Magnetic flux
Magnetic flux density
Inductance
Luminous flux
Illuminance
Activity of radionuclides
Absorbed dose
volt
farad
ohm
siemens
weber
tasla
henry
Lumen
Lux
becquerel
gray
Expression
in terms of
SI base units
m².kg.s-3.A-1
m-2 .kg-1 .s4 .A²
m².kg.s-3 .A²
m-2 .kg-1 .s³.A²
-1
m².kg.s-2 .A
-1
kg.s-2 .A
-2
m².kg.s-2 .A
cd.sr
m-2 .cd.sr*
s-1
m² s-2
SI Prefixes Expressing Decimal Factors
Factor
Prefix
Symbol
10 18
exa
E
10 -1
deci
d
10 15
peta
P
10 -2
centi
c
tera
T
10
-3
milli
m
giga
G
10 -6
micro
µ
nano
n
pico
p
femto
f
atto
a
10
12
10 9
Factor
10
6
mega
M
10
-9
10
3
kilo
k
10
-12
hecto
h
10
10
10
2
1
deka
da
10
(1)
-15
-18
Prefix
Symbol
WEIGHTS & MEASURES
METRIC MEASURES AND EQUIVALENTS
LENGTH
1 millimetre (mm)
1 centimetre (cm)
1 metre (m)
1 kilometre (km)
SURFACE OR AREA
1 sq.cm (cm²)
1 sq metre (m²)
1 are (a)
1 sq.km (km²)
CAPACITY
1 cu cm (cm³)
1 cu decimetre (dm³)
1cu metre (m³)
1 litre (l)
1 hectolitre (hl)
WEIGHT
1 milligramme (mg)
1 gramme (g)
1 kilogramme (kg)
1 tonne (t)
= 10mm
= 100cm
= 1000m
=0.0394 in
=0.3937 in
=1.0936 yds
=0.6214 mile
= 100mm²
= 10,000cm²
=100m²
=100hectares
=0.1550sq in
=1.1960 sq.yds
=119.60 sq yds
=0.3861 sq miles
0.0610 cu in
1000cm³
1000dm³
1 dm³
100 litres
=0.0351 cu ft
=1.3080 cu yds
=0.2642 US gallon
=2.7497 bushels
=0.0154 grain
=1000mg =0.0353 oz
=1000g =2.2046 lb
=1000kg = 0.9842 ton
=0.017 chattak
=1.07 seers
=26.75 maunds
THERMOMETER
COMPARISON
E=2xC
C = F-32 x 5 ÷ 9
F = Cx9 ÷ 5 + 32
Fever Chart
E
81.0
80.0
78.0
77.6
76.6
75.4
74.0
72.2
F
105
104
103
102
101
100
98.6
97
C
40.5
40
39.4
38.8
38.3
37.7
37
36.1
BRITISH MEASURES AND EQUIVALENTS
LENGTH
1 inch
1 foot
1 yard
1 rod
1 chain
1 furlong
1 mile
1 nautical mile
SURFACE OR AREA
1 sq inch
1 sq foot
1 sq.yard
1 acre
1 sq.mile
CAPACITY
1 cu inches
1 cu foot
1 cu yard
1 pint
1 quart
1 imperial gallon
1 bushel
APOTHECARIES
1 fuild ounce
1 pint
WEIGHT
Avoirdupois
1 tola
1 ounce
1 pound
1 seer
1 stone
1 hundredweight
1 ton
USA Dry Measure Equivelants
1 pints
1 bushel
USA Liquid Measure Equivalents
1 fluid ounce
1 pint (16 oz)
1 gallon US
1 barrel
= 2.54 cm
= 12 inches
= 3 feet
=55 yards
=22 yards
=220 yards
=1760 yards
=6080 feet
= 0.3048 m
= 0.9144 m
= 5.0292m
= 20.117 m
= 201.17 m
= 1.6093 km
= 1.853 km
=6.4516 cm²
=144 sq.inches
=9 sq.feet
= 4840 sq.yards
= 640 acres
= 0.0929 m²
= 0.8361m²
= 4046.9 m²
= 259.0 hectares
= 16.387 cm³
= 1728 cu inches
= 27 cu feet
= 4 gills
= 2 pints
= 8 pints
= 8 gallons
= 0.0283 m³
= 0.7646 m³
= 0.5683 litre
= 1.1365 litres
= 4.5461 litres
= 36.369 litres
= 8 fl drams
= 20 fl ounce
= 28.413 cm³
= 568.26 cm³
= 0.41 oucnes
= 437.5 grains
= 16 unce
= 16 chattak
= 14 pounds
= 112 pounds
= 20 cwt
= 11.6363 g
= 28.350 g
= 0.4536 kg
= 0.93 kg
= 6.3503 kgs
= 50.802 kgs
= 1.0161 tonnes
= 0.9689 UK pt
= 0.9689 UK bu
= 0.5506 litre
= 35.238 litres
= 1.0408 UK fl oz
= 0.8327 UK pt
= 0.8327 UK gal
= 42 US gallon
= 0.0296 litre
= 0.4732 litre
= 3.7853 litres
= 158.98 litres
(2)
Fahrenheit
Water Freezes
32
Water Boils
212
Absolute Zero
-459.6
Max.Global Human Env. 122
Centig- Environment
rade
0
0
100
200
-273.15
-546.3
50
100
(Hypothetically the lowest, possible
temperature at which all motion would
cease.
E
100
90
80
70
60
50
40
30
20
10
0
-10
-20
-30
-35.6
-40
-50
F
122
113
104
95
86
77
68
59
50
41
32
23
14
5
0
-4
-13
C
50
45
40
35
30
25
20
15
10
5
0
-5
-10
-15
-17.8
-20
-25
ANGULAR MEASURE
THE METRIC SYSTEM
60 second.................................1 minute
60 minute.........................................1 degree
30 degree...................................1 sign
90 degree............................1 quadrant
4 quadrant, or 360 degree,
..................1 circumference or graet circle
The earth rotates at a veiocity of 15 degree
an hour (about) 17.366 miles a minute
at the Equator);1 degree as therefore
equal to 4 minutes.s
LINEAR MEASURE
10 millimeters.............................1 centimetre
10 centimetre.........................1 decimetre
10 decimetre..........................1 metre
10 metres .................................1 decametre
10 decametres..........................1 hectometre
10 hectometres......................1 kilometre
SQUARE MEASURE
100 sq. millimetres..............1 sq.centimetre
100 sq. centimetres.............1 sq. decimetre
100 sq. decimetres...............1 sq. metre
100 sq. metres....................1 sq. decimetre
100 sq. decametres.........1 sq. hectometre
100 sq. hectometres........1 sq. kilometre
CIRCULAR MEASURE
Diameter of a Circle x 3.1416 gives
Circumference
Diameter Squared x .7854 gives Area
of Circle
Diameter Squard x 3.1416 gives Surface
Sphere
Diameter Cubed x .5236 gives Solidity
of Sphere
One Degree of Circumference x 57.3
give Radius.
Diameter of Cylinder x 3.1416, and
product by its length, gives the Surface.
Diameter Squared + .7854, and product
by the length, gives Solid Contents.
A Circular Acre is 235.504 feet, a Circular
Road 117.752 feet in diameter.
The Circumference of the Globe is about
24,855 miles and the Diameter about
7,900 miles
CUBIC MEASURE
1000 cu. millimetres...........1 cu. centimetre
1000 cu. centimetres......... 1 cu. decimetre
1000 cu. decimetres.............1 cu. metre
LIQUID MEASURE
10 millimetres.......................1 centilitre
10 centilitres......................1 decilitre
10 decilitres ............................1 litre
10 litres................................1 decalitre
10 decalitres............................1 hectolitre
10 hectolitres..........................1 kilolitre
WEIGHT
10 milligrams........................1 centigram
10 centigrams........................1 decigram
10 decigrams........................1 gram
10 grams.....................................1 decagram
10 decagrams........................1 hectogram
10 hectograms.......................1 kilogram
100 kilograms..........................1 quintal
10 quintals.................................1 ton
INTERNATIONAL PAPER SIZES
A series is based on AO. (841 x 1189)
mm), which is the equivalent of a square
metre in area, and each smaller size, A1,
A2, etc., is equal to half the area of the
preceding larger sizes
DIMENSIONS OF THE WORLD
Equatorial Diameter................7.926.68 miles
Polar Diameter...............7,899.99 miles
Difference..............................26.69 miles
Mean Diameter.....................7,918.00 miles
Equatorial Circumference
..........................................24,902.37 miles
Meridional Circumference
..........................................24,902.37 miles
Difference...........................41.93 miles
Area of Surface
..........................196,950,284 square miles
Water Area...........139,950,284 square miles
Land Area...........57,000,000 square miles
Volume of Land
..............................320,000,000 cubic miles
Volume of Water
............................320,000,000 cubic miles
AREAS AND DEPTHS OF THE OCEANS
Area
Greatest
Oceans (Square
Depth
(Miles
(Feet)
Pacific.....68,634,000
30,000
Atlantic....41,321,000
27,366
Indian......29,340,000
18,582
2A
AO
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
millimetres
1189 x 1682
841 x 1189
594 x 841
420 x 594
297 x 420
210 x 297
148 x 210
105 x 148
74 x 105
52 x 74
37 x 52
26 x 37
inches
46.81 x 66.22
33.11 x 46.81
23.39 x 33.11
16.54 x 23.39
11.69 x 16.54
8.27 x 11.69
5.83 x 8.27
4.13 x 5.83
2.91 x 4.13
2.05 x 2.91
1.46 x 2.05
1.02 x 1.46
C series if for envelopes or folders suitable
for enclosing stationary in the A sizes
C3
C4
C5
C6
(3)
millimetres
324 x 458
229 x 324
162 x 229
114 x 162
inches
12.76 x 18.03
9.02 x 12.76
6.38 x 9.02
4.49 x 6.38
Maximum Capacity of PVC / Steel Conduits
Maximum capacity of PVC conduit for the simultaneous drawing in of single core PVC cables
Nominal
cable
size
Nominal
overall
diameter
of cable
mm²
Size and guage of conduit
20 mm or ¾ inch
25 mm or 1 inch
32 mm or 1¼ inch
40 mm or 1½ inch
50 mm or 20 inch
PVC Insulation
1.0
2.9
12
18
30
40
50
1.5
3.1
10
15
25
35
45
2.5
3.5
8
12
20
30
35
4
4.3
5
8
12
20
25
6
4.9
4
6
10
15
20
10
6.2
2
4
6
10
12
16
7.3
2
3
5
7
8
25
9.0
-
2
3
4
6
35
10.3
-
-
2
3
5
50
12.0
-
-
2
2
4
MINIMUM BENDING RADIUS OF CABLES
Paper insulated, PVC insulated or XLPE insulated shall always be bent or (Straightened) slowly; they shall
never be bent to small radius, The minimum safe bending radius may be taken as given below but wherever
possible larger radius should be used
Cable cross section &
Insulation
PVC/XLPE
1.0 mm to 10.0 mm
10.0 mm to 25.0 mm
25.0 mm to 95.0 mm
95 mm to 300.0 mm
300 mm & above
Minimum Bending radius
MULTICORE
Single
Core
Un-armoured
3D
6D
8D
12 D
20 D
5D
8D
10 D
15 D
25 D
Armoured
6D
10 D
12 D
18 D
30 D
“D” is the overall diameter of the cable
All bends shall be made so that cable will not be damaged and the radius of the curve of inner edge of
any bend shall not be less than stated above.
(4)
(VA)
ELECTRICAL LOAD DEMAND FOR DIFFERENT
TYPE OF OCCUPANCIES VOLT AMPS
Other Gadgets/
appliance
Light/Fan
Occupancy
Description
Air Conditioning
@ of 1500 VA per ton
Per Sq. Meter
Per Sq. ft
Per Sq. Meter
Per Sq. ft
Per Sq. Meter
Per Sq. ft
Banks
35
3.5
20
2.0
65
6.5
Beauty parlours/Barber shop
30
3.0
40
4.0
200
20.0
Main Floor
30
3.0
50
5.0
110
11.0
Upper Floors
30
3.0
50
5.0
80
8.0
Ground floor
30
3.0
20
2.0
100
10.0
Upper floor
25
2.5
15
1.5
75
7.5
Multi Story
35
3.5
60
6.0
40
4.0
Single Floor
35
3.5
60
6.0
50
5.0
Hotel & Restaurants
40
4.0
30
3.0
150
15.0
Club & Recreation
20
2.0
30
3.0
150
15.0
Continuous performance
30
3.0
50
5.0
100
10.0
Neighbour hood
20
2.0
10
1.0
80
8.0
Hospitals/Clinics
40
4.0
60
6.0
200
20.0
Schools/Libraries
30
3.0
25
2.5
100
10.0
Religious Places
20
2.0
25
2.5
50
5.0
Parking/Garages
10.0
1.0
10
1.0
Nil
Nil
40 - 60
2-6
As per demand
As per demand
As per demand As per demand
Electric/Generator rooms
40
4.0
As per demand
As per demand
As per demand As per demand
Mechanical Plant rooms
40
4.0
As per demand
As per demand
As per demand As per demand
Departmental Stores
Residences
Offices
Theatre & Auditorium
Industries
(5)
Spacing of supports for conduits
Maximum distance between supports
Nominal size of conduit
Rigid Metal
Pliable
Rigid Insulating
Horizontal
Vertical
Horizontal
Vertical
Horizontal
Vertical
1
2
3
4
5
6
7
mm
mm
mm
mm
mm
mm
mm
Net exceeding 16
0.75
1.0
0.75
1.0
0.3
0.5
Exceeding 16 and not exceeding 25
1.75
2.0
1.5
1.75
0.4
0.6
Exceeding 25 and not exceeding 40
2.0
2.25
1.75
2.0
0.6
0.8
Exceeding 40
2.25
2.5
2.0
2.0
0.8
1.0
Spacing of supports for cable trunking
Maximum distance between supports
Cross-sectional area of trunking
Metal
Insulating
Horizontal
Vertical
Horizontal
Vertical
1
2
3
4
5
mm²
m
m
m
m
Exceeding 300 and not exceeding 700
0.75
1.0
0.5
0.5
Exceeding 700 and not exceeding 1500
1.25
1.5
0.5
0.5
Exceeding 1500 and not exceeding 2500
1.75
2.0
1.25
1.25
Exceeding 2500 and not exceeding 5000
3.0
3.0
1.5
2.0
Exceeding 5000
3.0
3.0
1.75
2.0
NOTE :
1- The spacing tabulated allow for maximum fill of cabels permitted by these Regulations
and the thermal limits specified in the relevant British Standard. They assume that the
conduit or trunking is not exposed to other mechanical stress
2- The above figures do not apply to lighting suspension trunking or where specials strengthening
couplers are used. A flexible conduit is not normally required to be supported in its
run. Supports should be positioned within 300m of bends or fitting
Earth elecrodes
(6)
MINIMUM SIZES OF COPPER EARTHING LEADS,
COPPER BONDING LEADS AND CONDUCTOR
ILUSTRATION OF EARTHING LEAD,
BONDING LEAD & CIRCUIT
PROTECTIVE CONDUCTOR TERMS
Circuit protective
conductor
10
3
Minimum sizes of copper earthing leads,copper Bonding leads
and circuit protective Conductors not contained in a
composite cable, Flexible cable, or flexible cord.
Nominal
Cross Sectional
Area of largest
Associted phase
conductor
Nominal cross
sectional area
of earthing lead
conductor
Nominal cross
sectional area of
bonding lead
conductor
mm²
mm²
mm²
1.0
6
4
2.5
1.5
6
4
2.5
2.5
6
4
2.5
4.0
6
4
4.0
6.0
6
6
4.0
10
10
6
6
16
10
6
6
25
16
10
10
35
16
10
10
50
25
16
16
70
35
25
-
95
50
25
-
120
70
35
-
150
70
35
-
185
95
35
-
240
120
50
-
300
120
50
-
400
120
50
-
500
120
50
-
630
120
50
-
Nominal cross
sectional area of
circuit protective
conductor
Circuit protective
conductor
8
9
3
4
mm²
8
8
8
2
5
7
6
G.LEVEL
1
(See Note Below)
1 = earth electrode (TT and IT systems)
2 = main earthing terminal
3 = exposed - conductive - part
4 = extraneous - conductive - part
5 = main metallic water pipe/gas pipe
6 = other means of earthing (TN systems)
7 = earthing lead
8 = main equipotential bonding conductor
9 = supplementary equipotential bonding conductors
10 = circuit protective conductor
EARTH ELECTRODES
The following types of earth electrodes are recognised for
the purposes of the Regulations:
(i) earth rods or pipes
(ii) earth tapes or wires
(iii) earth plates
(iv) underground structural metalwork embedded in
foundations
(v) welded metal reinforcement of concrete (except
prestressed concrete) embedded in the earth
(vi) lead sheaths and other metal coverings of cables,
(vii) other suitable underground metalwork.
The type and embedded depth of an earth electrode
shall be such that soil drying and freezing will
not increase its resistance above the required value.
The design used, and the construction of, an earth
electrode shall be such as to withstand damage
and to take account of possible increase in resistance due
to corrosion.
The metalwork of a gas, water or other service shall
not be used as a protective earth electrodes. This
requirement does not preclude the bonding of such
metalwork as required by Regulation
(7)
PHYSICAL DIMENSIONS OF CABLES
Details of Conductors (Copper)
Nominal
conductor area
mm
1.0
1.5
1.5
2.5
2.5
4.0
6.0
10
*16
*25
*35
*50
*70
*95
*120
*50
*185
*240
*300
300
*400
400
500
630
*
Minimum
Number
of Wires
1/1.13
1/1.38
7/0.53
1/1.78
7/0.67
7/0.85
7/1.04
7/1.35
7/1.75
7/2.20
7/2.60
19/1.85
19/2.20
19/2.60
36/2.12
36/2.33
36/2.60
36/2.98
36/3.35
61/2.52
36/3.78
61/2.85
91/2.65
91/2.98
Nominal Diameter
of Conductor
Circular
Compacted
Circular mm
mm
1.13
–
1.38
–
1.78
–
2.55
–
3.12
–
4.05
–
5.10
–
6.42
–
7.65
7.34
8.90
8.54
10.70
10.27
12.60
12.10
14.21
13.64
15.75
15.12
17.64
16.93
20.25
19.44
22.68
21.77
25.65
24.63
28.80
27.98
32.70
31.45
-
Maximum plain
conductor at 20°C
Maximum tinned conductor
resistance at 20°C
ohm / 1000 m
ohm / 1000 m
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
–
–
-
18.2
12.2
7.35
4.70
3.11
1.84
1.16
0.734
0.529
0.391
0.270
0.195
0.154
0.126
0.100
0.0762
0.0607
0.0475
–
–
-
These are also supplied COMPACTED with different wire sizes and varying number of wires, which will not affect conductor resistance at
20ºC.
CIRCULAR
PVC Insulated Non-sheathed general purpose Cable 450/750 volt
Rigid Conductor Cable for conduit wiring
REF 6491X
Single Core
Nominal Cross
sectional Area of
Conductor
mm²
Radial thickness of
insulation
(nominal)
mm
Mean overall
diameter
(upper limit)
mm
Approximate
weight of cable
1.0
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
185
240
300
400
500
630
0.6
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
2.45
2.99
3.75
4.20
4.88
6.15
7.05
8.75
9.8
11.30
12.90
15.05
16.50
18.35
23.05
26.05
29.05
33.05
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
(8)
kg / 100m
CIRCULAR
Circular PVC insulated PVC sheathed 300/500 volt (up to 35 mm²)
600/1000 volt (50 mm² and above)
REF 06181Y
Single Core
Nominal
Conductor
Area
Radial
Thickness of
insulation
Approx.
Thickness
of Inner
Covering
Radial
Thickness of
Sheath
Mean Overall
Diameter
Approximate
weight of
cable
mm²
mm
mm
mm
mm
kg/km
1.0
1.5
2.5
4.
6
10
16
25
35
95
120
150
185
240
300
400
500
630
0.6
0.7
0.8
0.8
0.8
1.0
1.0
1.2
1.2
1.60
1.60
1.80
2.00
2.20
2.40
2.60
2.80
2.80
0.8
0.8
0.8
0.9
0.9
0.9
1.0
1.1
1.1
1.60
1.70
1.70
1.80
1.90
1.90
2.10
2.10
2.20
4.15
4.82
5.20
6.20
6.78
8.10
9.15
11.00
12.00
18.40
20.05
21.90
24.30
27.50
30.15
35.70
39.35
43.45
28
34
49
75
99
155
225
340
445
1330
1680
2000
2430
3090
3770
4830
5920
7420
-
REF 06192Y
1.0
1.5
2.5
4.
6
10
0.6
0.7
0.8
0.8
0.8
1.0
-
0.9
0.9
1.0
1.0
1.1
1.2
Two Core
4.4 x 6.6
4.8 x 7.6
5.65 x 9.10
6.45 x 10.7
7.25 x 12.05
8.8 x 14.95
REF 06183Y
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
0.4
0.4
0.6
1.2
1.2
1.2
1.2
1.4
1.4
Three Core
8.9
10.05
10.9
12.75
14.5
17.90
REF 06184Y
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
0.4
0.6
0.6
1.2
1.2
1.2
1.4
1.4
1.4
(9)
54
67
99
150
205
325
100
130
180
250
340
540
Four Core
9.55
10.20
11.85
14.3
16.1
19.40
120
160
230
300
440
680
Copper Wire
Flexible cable conductors
Nominal
Number and
cross Sectional Nominal diameter
Area
of wire in conductor
Approximate
diameter of
conductor
Maximum resistance per km of cable at 20° C
Bunched Multiple
Standard
Plain
mm²
mm
mm
Single core
On flat
ohm
mm
Tinned
Multicore
circular
ohm
Single core
on flat
ohm
Conductor
Multicore
circular
ohm
6
84/0.3
3.3
-
3.14
3.30
3.23
3.39
10
80/0.4
4.2
-
1.82
1.91
1.85
1.95
16
126/0.4
5.3
-
1.16
1.21
1.18
1.24
25
196/0.4
6.6
7.1
0.743
0.780
0.757
0.795
35
276/0.4
7.8
8.5
0.527
0.554
0.538
0.565
50
396/0.4
9.4
10.3
0.368
0.386
0.375
0.393
70
360/0.5
11.2
12.4
0.259
0.272
0.264
0.277
95
475/0.5
13.0
14.5
0.196
0.206
0.200
0.210
120
608/0.5
14.5
16.0
0.153
0.161
0.156
0.164
150
756/80.5
-
18.0
0.123
0.129
0.126
0.132
185
925/0.5
-
20.0
0.101
0.106
0.103
1.108
240
1221/0.5
-
23.0
0.0763
0.0801
0.0778
0.0817
300
1525/0.5
-
26.0
0.0611
0.0641
0.0623
0.0654
400
2013/0.5
-
30.0
0.0463
0.0486
0.0472
0.0495
500
1769/0.6
-
33.5
0.0366
-
0.0373
-
630
2257/0.6
-
37.0
0.0287
-
0.0292
-
* These formations are for welding cables
This tables is based on BS 6360 : 1969
Copper Wire
Circular non-flexible cables conductors (annealed)
Nominal
Number and
cross Sectional Nominal diameter
Area
of wire in conductor
Maximum resistance per km of cable at 20° C
Nominal
diameter of
conductor
Single core
On flat
mm²
Tinned
Plain
Multicore
circular
Single core
on flat
Multicore
circular
Nominal
weight
Per km of
Conductor
mm
mm
ohm
ohm
ohm
ohm
kg
1.0
1/1.13
1.13
17.7
18.1
17.9
18.2
9.0
1.5
1/1.38
1.38
11.9
12.1
12.0
12.2
13.3
2.5.
1/1.78
1.78
7.14
7.28
7.21
7.35
22.2
4.0
1/2.25
2.25
4.47
4.56
4.51
4.60
35.4
6.0
1/2.76
2.76
2.97
3.03
3.00
3.06
53.2
10
1/3.57
3.57
1.77
1.81
1.79
1.83
89.0
16
1/4.50
4.50
1.12
1.14
1.13
1.15
142
25
7/2.14
6.42
0.712
0.727
0.719
0.734
229
35
19/1.53
7.65
0.514
0.524
0.519
0.529
317
50
19/1.78
8.90
0.379
0.387
0.383
0.391
429
70
19/2.14
10.70
0.262
0.268
0.265
0.270
620
95
19/2.52
12.60
0.189
0.193
0.191
0.195
860
120
37/2.03
14.21
0.150
0.153
0.151
0.154
1086
150
37/2.25
15.75
0.122
0.124
0.123
0.126
1334
185
37/2.52
17.64
0.0972
0.0991
0.0982
0.100
1673
240
61/2.25
20.25
0.0740
0.0754
0.0747
0.0762
2199
300
61/2.52
22.68
0.0590
0.0601
0.0595
0.0607
2759
400
61/2.85
25.65
0.0461
0.0470
0.0465
0.0475
3528
400
91/2.36
25.96
0.0451
0.0460
0.0459
0.0468
3610
* To obtain the maximum resistance of hard-drawn conductors the tabulated figures should
be divided by 0.97 This table is based on BS 6360:1969
(10)
FUNDAMENTAL REQUIREMENTS FOR SAFETY
Workmanship and materials
Good workmanship and proper materials
shall be used
General
All equipment shall be constructed,
installed and protected and shall be
capable of being maintained, inspected
and tested so as to prevent danger so far
as is reasonably practicable.
All equipment shall be suitable for
maximum power demanded by the
current-using equipment when it is
functioning in its intnded manner.
All electrical conductor shall be of sufficient
size and current-carrying capacity for the
purposes for which they are intended.
All conductors shall either
(i) be so insulated and where necessary
further effectively protected, or
(ii) be so placed and safeguarded, to
prevent danger so far as is reasonably,
practicable.
Every electrical joint and connection shall
be of proper construction as regards
conductance, insulation, mechanical
strength and protection.
Overcurrent protective devices
Where necessary to prevent danger, every
installation and every circuit thereof shall
be protected against over-current by
(i) devices which:
will operated automatically at values of
current which are suitably related to the
(ii) safe current rating of the circuit, and
are of adequate breaking capacity and
where appropriate, making capacity, and
(iii) are suitably located and are
ccnstructed as to prevent danger from
overheating, arcing or the scattering of
hot particles when they come into
operation and to permit ready restoration
of the supply without danger.
Precautions against earth leakage
and earth fault curents.
Where metalwork of electrical equipment,
other than current-carrying conductors,
may become charged with electricity in
such a manner as to cause danger:
(41)
(i) the metalwork shall be connected with
earth in such a manner as will cause
discharge of electrical energy without
danger, or
(ii) other equally effective precautions
shall be taken to prevent danger.
Every circuit shall be arranged so as to
prevent the persistence of dangerous
earth leakage currents.
Where metalwork is connected with Earth
in accordance with relevent regulations.
the circuit concerned shall be protected
against the persistence of an Earth fault
current by:
(i) the over-current protective devices as
required by regulation or
(ii) a residual current device or equally
effective device.
The method described in item (ii) above
shall be used whenever the prospective
Earth fault current is insufficient to cause
prompt operation of the over-current
protective devices.
Where any metalwork of electrical
equipment is connected with earth in
accordance with regulation and is
accessible simultaneously with substantial
exposed metal parts of other services,
the latter shall be effectively connected
to the main earthing terminal of the
installation.
Protective devices and switches
A single-pole fuse switch or circuit-breaker
shall be inserted in the phase conductor
only.
No switch or circuit-breaker, excepting
where linked, or fuse shall be inserted in
an earthed neutral conductor and any
linked switch or linked circuit-breaker
inserted in an earthed neutral conductor
shall be arranged to break all the related
phase conductor
Isolation and switching
Effective means, suitably placed for ready
operation, shall be provided so that all
voltage may be cut from every installation,
from every circuit thereof and from all
equipment, as may be necessary to
prevent or remove danger.
Every fixed electric motor shall be
provided with an efficient means of
switching off, readily accessible, easily
operated and so placed as to prevent
danger.
(42)
Accessibility of equipment
Every piece of equipment which requires
operation or attention by a person shall
be so installed that adequate space are
afforded for such operation or attention.
Precaution in adverse conditions
All equipment likely to be exposed to
weather,corrosive atmosphere or other
adverse conditions, shall be so
constructed or protected as may be
necessary to prevent danger arising from
such exposure.
All equipment in surroundings susceptible
to risk of fire or explosion shall be so
constructed or protected and such other
special precautions shall be taken, as
may be necessary to prevent danger.
Additions and alterations to
an installation
No addition or alteration, temporary or
permanent, shall be made to an existing
installation, unless it has been ascertained
that the rating and the condition of any
existing equipment,including that of the
supplier, which will have to carry any
additional loads is adequate for the altered
circumstances and the earthing
arrangments is also adequate.
Inspection and testing
On completion of an installation or an
extension or alteration of an
installation,appropriate inspection and
tests shall be made,to verify so far as is
reasonably practicable that the
requirement of regulations have been
met. The person carrying out the
inspection and tests or a person acting
on their behalf,shall inform the person
ordering the work of the recommendations
for periodic inspection and testing in future.
(43)
PRODUCT RANGE
PRODUCT
GENERAL WIRING
RANGE
SPECIFICATION
450 / 750V & 300 / 500 V
a) SINGLE CORE
1mm² to 16 mm²
BSS - 6004 : 2000
USAGE
House wiring Industrial
lighting & Commercial
buildings
b) MULTICORE
1 mm² to 10mm²
L. V. CABLE
600 / 1000V & 1900 / 3300 V a) SINGLE CORE
Industrial Projects e.g.
25mm² to 1000 mm² Textile, Fertilizer, Sugar,
COPPER OR ALUMINIUM BSS - 6346 : 1997
Armoured / Unarmoured Refineries Cement etc.
CONDUCTOR XLPE OR
b) MULTICORE
PVC INSULATED
16 mm² to 400 mm²
Armoured / Unarmoured
11000 - 15000 V
M. V. CABLE
COPPER OR ALUMINIUM
IEC - 502 : 1994
CONDUCTOR XLPE OR
PVC INSULATED
a) SINGLE CORE
16 mm² to 630 mm²
b) MULTICORE
16 mm² to 300 mm²
Primary Cable of
Utility Companies for
distribution to Sub-Station
BSS : 6360 : 7884, 215
Upto 500 mm²
Overhead Transmission
Lines
CONTROL CABLES
600 / 1000 V
BSS - 6346
MULTICORE
1.5 mm² to 4.0 mm²
Industrial Control Wiring
WELDING CABLES
PCL design with synthetic
rubber insulation
16 mm² to 300 mm²
Arc Welding Plant
TELEPHONE CABLES
PVC / PE INSULATED
PCL Design
1 pair to 20 pairs
Armoured / Unarmoured
Telecommunication
CONDUCTOR
PACC / HDBC / ACSR / AAC
SPECIAL CABLES
a)
AIR FIELD LIGHTING CABLE
Civil Aviation Authority
Airport Lighting
b)
COAXIAL CABLES
5C - 2V 75 ohm, RG - 6, RG - 11
Dish Antenna CC TV and Cable
Wiring
c)
SUBMERSIBLE CABLES
d)
MISCELLANEOUS OTHER CABLES As per customer’s requirements
ALUMINIUM SECTION
(Profiles)
Alum-Ex
Brand
Water Submersible Pumps.
BS-1474, ASTM-B221,
BS-3987 & AAMA CLASS-1
a)
b)
c)
d)
e)
Anodized As Well as
Powder Coated
f)
g)
h)
i)
j)
k)
l)
High conductivity
Oxygen free
COPPER ROD
ASTM B-49
Sections for sliding doors and windows
Sections for hinged doors and windows
Sections for fixed glazing/shop fronts
Sections for double glazed sliding
Doors and Windows
Sections for double glazed openable
doors & windows
Glass door sections
Curtain wall sections/Structural glazed
sections
Centrally pivoted window sections
Swing door sections
Sections for casement/awning windows
False ceiling sections
Special sections to suit
customers’ specific needs
8 mm Dia
Architectural , Industrial &
Commercial.
Enamel wire manufacturing,
Electrical/communication wires,
cables, conductor & enamelled
wire.