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POWER CABLES
REFERENCE STANDARDS  
» INTERNATIONAL :
» NATIONAL :
 BS 6346, IEC 60502
IS 1554, IS 7098
VOLTAGE RATING 1.1 KV, 3.3 KV, 6.6 KV & 11 KV.
CONDUCTOR COPPER/ALUMINIUM
INSULATION PVC/XLPE
ARMOUR G.I WIRE/STEEL STRIP/STEEL TAPE
INNER/OUTER SHEATH PVC/FR PVC/FRLS PVC/ZH FRLS COMPOUNDS

Single-core 600/1000 V cables with circular standed copper conductors - BS 6346
1 2 3 4 5 6 7 8
Nominal
cross-
sectional
area of
conductor* 		Thickness
of
insulation 		Unarmoured cables Armoured cables
Thickness
of sheath		 Approx-
imate
overall
diameter 		Thickness
of extruded
bedding 		Nominal
armour
wire
diameter 		Thickness
of
oversheath 		Approx-
imate
overall
diameter
mm2 mm mm mm mm mm mm mm
50 1.4 1.4 15.1 0.8 1.25 1.5 19.1
70 1.4 1.4 16.9 0.8 1.25 1.6 21.1
95 1.6 1.5 19.4 0.8 1.25 1.6 23.4
120 1.6 1.5 21.0 1.0 1.6 1.7 26.3
150 1.8 1.6 23.2 1.0 1.6 1.7 28.3
185 2.0 1.7 25.8 1.0 1.6 1.8 30.8
240 2.2 1.8 29.0 1.0 1.6 1.9 34.1
300 2.4 1.9 32.1 1.0 1.6 1.9 37.0
400 2.6 2.0 35.8 1.2 2.0 2.1 42.0
500 2.8 2.1 39.6 1.2 2.0 2.1 45.6
630 2.8 2.2 43.8 1.2 2.0 2.2 49.7
800 2.8 2.3 48.3 1.4 2.5 2.4 55.8
1000 3.0 2.5 53.7 1.4 2.5 2.5 61.0


Two-core 600/1000 V cables with copper conductors - BS 6346
1 2 3 4 5 6 7 8 9
Nominal
cross-
sectional
area of
cond-
uctor* 		Thickness
of
insulation 		Unarmoured cables Armoured cables
Thickness
of sheath		 Approx-
imate
overall
diameter 		Thickness
of extruded
bedding 		Nominal
armour
wire
diameter 		Thickness
of
over-
sheath 		Approximate
overall diameter
Extruded
bedding		 Tapped
bedding
mm2 mm mm mm mm mm mm mm mm
1.5* 0.6 - - 0.8 0.9 1.3 11.7 -
1.5† 0.6 - - 0.8 0.9 1.4 12.3 -
2.5* 0.7 - - 0.8 0.9 1.4 13.1 -
2.5† 0.7 - - 0.8 0.9 1.4 13.6 -
4† 0.8 - - 0.8 0.9 1.4 15.1 -
6† 0.8 - - 0.8 1.25 1.5 16.5 -
10† 1.0 1.8 16.1 0.8 1.25 1.6 20.1 20.1
16† 1.0 1.8 18.6 0.8 1.25 1.6 21.9 21.9
25‡ 1.2 1.8 18.4 1.0 1.6 1.7 23.0 22.6
25† 1.2 1.8 22.1 1.0 1.6 1.7 26.7 26.3
35‡ 1.2 1.8 20.1 1.0 1.6 1.8 24.9 24.5
35† 1.2 1.8 24.5 1.0 1.6 1.8 29.4 29.0
50§ 1.4 1.8 22.8 1.0 1.6 1.9 27.8 27.4
70 1.4 1.9 25.5 1.2 1.6 1.9 30.4 30.4
95 1.6 2.0 29.3 1.2 2.0 2.1 35.5 34.7
120 1.6 2.1 31.8 1.2 2.0 2.2 38.0 37.2
150 1.8 2.2 35.1 1.2 2.0 2.3 41.3 40.5
185 2.0 2.4 39.1 1.4 2.5 2.4 46.4 45.2
240 2.2 2.5 43.9 1.4 2.5 2.5 51.2 50.0
300 2.4 2.7 48.7 1.6 2.5 2.7 56.4 54.8
400 2.6 2.9 54.2 1.6 2.5 2.9 61.9 60.3

* Circular solid conductors (class 1).
† Circular or circular compacted stranded conductors (class 2).
‡ Shaped stranded conductors (class 2)
§ Cables having conductors of nominal cross-sectional area 50 mm2 and above have shaped stranded conductors (class 2).
 


Three-core 600/1000 V cables with copper conductors - BS 6346
1 2 3 4 5 6 7 8 9
Nominal
cross-
sectional
area of
cond-
uctor* 		Thickness
of
insulation 		Unarmoured cables Armoured cables
Thickness
of sheath		 Approx-
imate
overall
diameter 		Thickness
of extruded
bedding 		Nominal
armour
wire
diameter 		Thickness
of
over-
sheath 		Approximate
overall diameter
Extruded
bedding		 Tapped
bedding
mm2 mm mm mm mm mm mm mm mm
1.5* 0.6 - - 0.8 0.9 1.4 12.3 -
1.5† 0.6 - - 0.8 0.9 1.4 12.8 -
2.5* 0.7 - - 0.8 0.9 1.4 13.6 -
2.5† 0.7 - - 0.8 0.9 1.4 14.1 -
4† 0.8 - - 0.8 0.9 1.4 15.8 -
6† 0.8 - - 0.8 1.25 1.5 18.0 -
10† 1.0 1.8 17.0 0.8 1.25 1.6 21.2 21.2
16† 1.0 1.8 19.7 0.8 1.25 1.6 23.1 23.1
25‡ 1.2 1.8 20.4 1.0 1.6 1.7 25.0 24.6
25† 1.2 1.8 23.5 1.0 1.6 1.7 28.2 27.8
35‡ 1.2 1.8 22.4 1.0 1.6 1.8 27.3 26.9
35† 1.2 1.8 26.2 1.0 1.6 1.8 31.0 30.6
50§ 1.4 1.8 25.5 1.0 1.6 1.9 30.5 30.1
70 1.4 1.9 28.7 1.2 2.0 2.0 35.0 34.2
95 1.6 2.1 33.3 1.2 2.0 2.1 39.3 38.5
120 1.6 2.2 36.3 1.2 2.0 2.2 42.2 41.4
150 1.8 2.3 40.0 1.4 2.5 2.4 47.5 46.3
185 2.0 2.5 44.6 1.4 2.5 2.5 51.9 50.7
240 2.2 2.6 50.1 1.6 2.5 2.6 57.8 56.2
300 2.4 2.8 55.6 1.6 2.5 2.8 63.2 61.6
400 2.6 3.1 62.2 1.6 2.5 3.0 69.6 68.0

* Circular solid conductors (class 1).
† Circular or circular compacted stranded conductors (class 2).
‡ Shaped stranded conductors (class 2)
§ Cables having conductors of nominal cross-sectional area 50 mm2 and above have shaped stranded conductors (class 2).


Fore-core 600/1000 V cables with copper conductors - BS 6346
1 2 3 4 5 6 7 8 9
Nominal
cross-
sectional
area of
cond-
uctor* 		Thickness
of
insulation 		Unarmoured cables Armoured cables
Thickness
of sheath		 Approx-
imate
overall
diameter 		Thickness
of extruded
bedding 		Nominal
armour
wire
diameter 		Thickness
of
over-
sheath 		Approximate
overall diameter
Extruded
bedding		 Tapped
bedding
mm2 mm mm mm mm mm mm mm mm
1.5* 0.6 - - 0.8 0.9 1.4 13.0 -
1.5† 0.6 - - 0.8 0.9 1.4 13.5 -
2.5* 0.7 - - 0.8 0.9 1.4 14.5 -
2.5† 0.7 - - 0.8 0.9 1.4 15.0 -
4† 0.8 - - 0.8 1.25 1.5 17.8 -
6† 0.8 - - 0.8 1.25 1.5 19.2 -
10† 1.0 1.8 18.6 0.8 1.25 1.6 22.8 22.8
16† 1.0 1.8 21.6 1.0 1.6 1.7 26.3 25.9
25‡ 1.2 1.8 22.9 1.0 1.6 1.8 27.8 27.4
25† 1.2 1.8 25.9 1.0 1.6 1.8 30.7 30.3
35‡ 1.2 1.8 25.4 1.0 1.6 1.9 30.5 30.1
35† 1.2 1.8 28.9 1.0 1.6 1.9 33.9 33.5
50§ 1.4 1.9 29.2 1.2 2.0 2.0 35.4 34.6
70 1.4 2.0 33.0 1.2 2.0 2.1 39.2 38.4
95 1.6 2.2 38.3 1.2 2.0 2.2 44.3 43.5
120 1.6 2.3 41.8 1.4 2.5 2.4 49.3 48.1
150 1.8 2.5 46.3 1.4 2.5 2.5 53.6 52.4
185 2.0 2.6 51.3 1.6 2.5 2.6 59.0 57.4
240 2.2 2.8 58.0 1.6 2.5 2.8 65.7 64.1
300 2.4 3.1 64.6 1.6 2.5 3.0 72.0 70.4
400 2.6 3.3 72.0 1.8 3.15 3.3 81.3 79.3

* Circular solid conductors (class 1).
† Circular or circular compacted stranded conductors (class 2).
‡ Shaped stranded conductors (class 2)
§ Cables having conductors of nominal cross-sectional area 50 mm2 and above have shaped stranded conductors (class 2).


CLICK HERE FOR REFRENCE TABLES :-
» Constructional and other details 1100 volts Single Core Unarmoured/Armoured Cable type: AYY/AYWaY to IS: 1554 (part-I) 1988.
» 1100 volts three core Unarmoured/Armoured Cable Type A YY/A YFY to IS : 1554 (part-I)
» 1100 volts four core with reduced Neutral Core Unarmoured/Armoured Cable Type A YY/A YFY to IS : 1554 (part-I) 1988
» 1100 volts three core Unarmoured/Armoured Cable Type AYY/AYFY to IS : 1554 (part-I) 1988
 

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