BS 6724

BS 6724

STANDARD: BS 6724

VOLTAGE RATING: 600/1000V

APPLICATION:
Industrial wiring and mains distribution, where smoke and acid gas emission would pose a major hazard in the event of fire. Can be laid direct in the ground, or in ducts, clipped to surface, on trays or in free air. May be embedded in concrete.

CONSTRUCTION:
Single, Two, Three, Four and Five core cables. Stranded plain copper conductors, XLPE insulated, cores laid up, extruded Zero Halogen, Low Smoke inner sheath, galvanised steel wire armoured with left hand lay(Non magnetic Aluminium wires for single cores) and Zero Halogen, Low Smoke outer sheath.

CORE COLOURS:
Single core: Brown or Blue.
Two core: Brown and Blue.
Three core: Brown, Black and Grey.
Four core: Brown, Black, Grey and Blue.
Five core: Brown, Black, Grey, Green/Yellow and Blue and/or white cores with black numbers as alternative to coloured.
Seven – Forty eight core: white core with black numbers.

SHEATH COLOURS: Black with other colours available subject to MMQ.

MINIMUM BENDING RADIUS: 6D circular conductors. 8D shaped conductors.

MAXIMUM CONDUCTOR TEMPERATURE: 90°C.
Note: Where a conductor operates at a temperature exceeding 70°C it shall be ascertained that the equipment connected to the conductor is suitable for the conductor operating temperature (see regulation 512-1-2 of BS7671, the 17th Edition of IEE Wiring Regulations).

CURRENT RATING: Refer to table 4E4A or 4E4B of BS7671.

FIRE PERFORMANCE CHARACTERISTICS:

Smoke emission: IEC 61034, BS EN 50268

Acid gas emission: IEC 60754-1, BS EN 50267

Flame propagation: IEC 60332-1, IEC 60332-3, BS EN 50265, BS EN 50266 Categories C & A.

Reference
Number
Nominal area of conductor Insulation
Thickness
Armour wire diameter Approx. diameter under armour Approx. overall diameter Approx cable weight Max resistance of cable
DC at 20ºC
Max resistance of cable
AC at 90ºC
Reactance
@50Hz
Impedance
AC @ 90ºC
Star capacitance Maximum armour resistance at 20ºC
  mm2 Mm Mm Mm mm Kg/km Ω/km Ω/km Ω/km Ω/km µF/km Ω/km
Single Core Aluminium Wire Armour 694AWLSH #50
#70
#95
#120
#150
*185
*240
*300
*400
*500
*630
*800
*1000
1.0
1.1
1.1
1.2
1.4
1.6
1.7
1.8
2.0
2.2
2.4
2.6
2.8
0.9
1.25
1.25
1.25
1.6
1.6
1.6
1.6
2.0
2.0
2.0
2.5
2.5
12.7
14.7
16.6
18.5
20.8
23.2
26.0
28.6
32.4
36.0
40.4
45.6
50.6
17.5
20.2
22.3
24.2
27.4
30.0
32.8
35.6
40.4
44.2
48.8
55.4
60.6
800
960
1240
1510
1900
2320
2930
3580
4600
5770
7250
9381
11540
0.3870
0.2680
0.1930
0.1530
0.1240
0.0991
0.0754
0.0601
0.0470
0.0366
0.0283
0.0221
0.0176
0.4938
0.3410
0.2469
0.1962
0.1594
0.1280
0.0985
0.0797
0.0635
0.0513
0.0419
0.0349
0.0303
0.104
0.101
0.097
0.094
0.095
0.093
0.090
0.088
0.089
0.087
0.085
0.087
0.085
0.505
0.356
0.265
0.217
0.186
0.158
0.134
0.119
0.109
0.101
0.095
0.094
0.090
0.41
0.46
0.53
0.56
0.52
0.54
0.59
0.63
0.62
0.66
0.70
0.85
0.87
1.30
0.75
0.67
0.61
0.42
0.38
0.34
0.31
0.22
0.20
0.18
0.13
0.12
Two Core Steel Wire Armour 6942LSH *1.5
*2.5
 *4
*6
#10
#16
25
35
50
70
95
120
150
185
240
300
400
0.6
0.7
0.7
0.7
0.7
0.7
0.9
0.9
1.0
1.1
1.1
1.2
1.4
1.6
1.7
1.8
2.0
0.9
0.9
0.9
0.9
0.9
1.25
1.25
1.6
1.6
1.6
2.0
2.0
2.0
2.5
2.5
2.5
2.5
7.3
8.5
9.4
10.5
12.3
14.9
14.7
16.8
19.0
22.0
25.1
27.9
30.9
34.9
39.0
43.3
48.4
12.3
13.6
14.7
15.9
18.0
20.4
20.4
23.3
25.8
29.0
33.1
36.1
39.3
44.7
49.0
53.5
59.0
305
354
416
507
647
993
1290
1500
1890
2450
3300
4020
4750
6180
7570
9180
10500
12.1000
7.4100
4.6100
3.0800
1.8300
1.1500
0.7270
0.5240
0.3870
0.2680
0.1930
0.1530
0.1240
0.0991
0.0754
0.0601
0.0470
15.4280
9.4480
5.8780
3.9270
2.3330
1.4660
0.9260
0.6685
0.4940
0.3412
0.2471
0.1964
0.1597
0.1284
0.0989
0.0801
0.0641
0.104
0.101
0.099
0.094
0.093
0.088
0.082
0.077
0.076
0.075
0.074
0.072
0.073
0.073
0.072
0.072
0.071
15.428
9.449
5.879
3.927
2.335
1.469
0.930
0.673
0.500
0.349
0.258
0.209
0.176
0.148
0.122
0.107
0.096
0.23
0.25
0.27
0.30
0.32
0.35
0.38
0.42
0.45
0.49
0.55
0.57
0.57
0.55
0.60
0.62
0.64
10.20
8.80
7.90
7.00
6.00
3.70
3.70
2.60
2.30
2.00
1.40
1.30
1.20
0.82
0.73
0.67
0.59
Three Core Steel Wire Armour 6943LSH *1.5
*2.5
*4
*6
#10
#16
#25
#35
50
70
95
120
150
185
240
300
400
0.6
0.7
0.7
0.7
0.7
0.7
0.9
0.9
1.0
1.1
1.1
1.2
1.4
1.6
1.7
1.8
2.0
0.9
0.9
0.9
0.9
1.25
1.25
1.6
1.6
1.6
1.6
2.0
2.0
2.5
2.5
2.5
2.5
2.5
7.8
9.2
10.0
11.2
13.1
15.3
18.9
21.3
21.7
25.2
28.8
32.0
35.9
40.0
44.9
49.8
55.8
12.6
14.1
15.3
16.6
19.5
21.6
25.5
28.0
28.5
32.2
37.0
40.4
45.5
49.8
55.1
60.2
66.6
335
388
471
576
884
1159
1800
2230
2490
3290
4440
5470
6930
8350
10400
12600
14600
12.1000
7.4100
4.6100
3.0800
1.8300
1.1500
0.7270
0.5240
0.3870
0.2680
0.1930
0.1530
0.1240
0.0991
0.0754
0.0601
0.0470
15.4280
9.4480
5.8780
3.9270
2.3330
1.4660
0.9260
0.6685
0.4940
0.3412
0.2471
0.1964
0.1597
0.1284
0.0989
0.0801
0.064
0.104
0.101
0.099
0.094
0.093
0.088
0.082
0.077
0.076
0.075
0.074
0.072
0.073
0.073
0.072
0.072
0.071
15.428
9.449
5.879
3.928
2.335
1.469
0.930
0.673
0.500
0.349
0.258
0.209
0.176
0.148
0.122
0.107
0.096
0.23
0.25
0.27
0.30
0.32
0.35
0.37
0.42
0.45
0.49
0.55
0.57
0.55
0.55
0.60
0.62
0.64
9.50
8.20
7.50
6.70
4.00
3.50
2.50
2.30
2.00
1.80
1.30
1.20
0.78
0.71
0.63
0.58
0.52
Four Core Steel Wire Armour 6944LSH *1.5
*2.5
*4
*6
#10
#16
#25
#35
50
70
95
120
150
185
240
300
400
0.6
0.7
0.7
0.7
0.7
0.7
0.9
0.9
1.0
1.1
1.1
1.2
1.4
1.6
1.7
1.8
2.0
0.9
0.9
0.9
1.25
1.25
1.25
1.6
1.6
1.6
2.0
2.0
2.5
2.5
2.5
2.5
2.5
3.15
8.5
9.9
11.0
12.3
14.5
17.0
21.0
23.6
25.0
29.5
33.3
37.5
41.6
46.4
52.6
58.0
65.4
13.5
15.0
16.4
18.7
21.1
22.9
27.6
30.4
32.0
37.7
41.7
47.1
51.4
56.6
63.0
68.8
78.1
365
438
532
764
1013
1360
2160
2690
3130
4500
5600
7400
8780
10630
13390
16290
19800
12.1000
7.4100
4.6100
3.0800
1.8300
1.1500
0.7270
0.5240
0.3870
0.2680
0.1930
0.1530
0.1240
0.0991
0.0754
0.0601
0.0470
15.4280
9.4480
5.8780
3.9270
2.3330
1.4660
0.9260
0.6685
0.4940
0.3412
0.2471
0.1964
0.1597
0.1284
0.0989
0.0801
0.0641
0.104
0.101
0.099
0.094
0.093
0.088
0.082
0.077
0.076
0.075
0.074
0.072
0.073
0.073
0.072
0.072
0.071
15.428
9.449
5.879
3.928
2.336
1.469
0.930
0.673
0.500
0.349
0.258
0.209
0.176
0.148
0.122
0.107
0.096
0.23
0.25
0.27
0.30
0.32
0.35
0.37
0.42
0.45
0.48
0.55
0.55
0.55
0.55
0.58
0.62
0.63
8.80
7.70
6.80
4.30
3.70
3.10
2.30
2.00
1.80
1.20
1.10
0.76
0.68
0.61
0.54
0.49
0.35
Five Core Steel Wire Armour 6945LSH *1.5
*2.5
*4
*6
#10
#16
#25
#35
#50
#70
0.6
0.7
0.7
0.7
0.7
0.7
0.9
0.9
1.0
1.1
0.9
0.9
0.9
1.25
1.25
1.6
1.6
1.6
2.0
2.0
9.7
11.7
13.0
14.5
17.2
20.0
24.7
27.8
32.4
37.9
14.3
16.3
17.8
20.0
22.9
26.6
31.5
34.8
40.4
46.3 
410
470
710
876
1165
1742
2323
2932
4192
5336 
12.1000
7.4100
4.6100
3.0800
1.8300
1.1500
0.7270
0.5240
0.3870
0.2680 
15.4280
9.4480
5.8780
3.9270
2.3330
1.4660
0.9260
0.6685
0.4940
0.3412
0.104
0.101
0.099
0.094
0.093
0.088
0.082
0.077
0.076
0.075
15.428
9.449
5.879
3.928
2.336
1.469
0.930
0.673
0.500
0.349
0.23
0.25
0.27
0.30
0.32
0.35
0.37
0.42
0.45
0.48
8.20
6.80
6.20
3.90
3.40
2.20
1.80
1.60
1.10
0.90 

* Circular non compacted conductors
# Compacted circular conductors