Instrumentation Cables 
BS5308 Cable ESI Cable BS 6231 Cable DEF Standard Cable EN50288-7 LSZH Cables EN50288-7 PVC Cables NF M 87-202

BS 6231 Instrumentation Cables

Application :
These cables are suitable for internal wiring of appliances and switch, control, metering and instrument panels of switchgear, etc

Construction
Standards : BS 6231, UL 83, CSA C22.2, UL Flame test UL 1581/VW1 FT1 FT2
Conductor : plain annealed
Insulation : Flexible PVC
Temperature Range: 0 o C -105 o C
Voltage rating : 0.6 / 1kV
Min. Bending radius : 3 x Overall diameter
Insulation colours : 0.5mm² to 25 mm² Red, black, white, grey, brown, orange, yellow, blue, green, and green/yellow.
35mm² to 120 mm² Red, black and green/yellow. . Other colours available on request.

Relevant Standards :
To BS6231, UL Style 1015, 1028, 1283, 1284; CSA TEW 105 °C; UL VW -1 Vertical Flame Test

Current Ratings
The table below lists the full Thermal current ratings which will raise the Conductor temperature to 85 °C when one cable is installed in free air at an Ambient temperature of 45 °C.
These ratings are applicable for installations which ensure that the operation of the protective device is not greater than 1.45 times the continuous current carrying capacity of the cable.
Where protection is by means of semi-enclosed fuses to BS 3036 the rating must be multiplied by a factor of 0.76.

Note:Sizes 150.0mm², 185.0mm² and 240.0mm², 300.0mm² & 400mm² are classed as dual Rated and are manufactured to UL & BS 6231 only.

SIZE
mm²
RESISTANCE
PER 1000M
OF 20 °C
OHM
CURRENT
RATING
AMP
APPROXIMATE
VOLT DROP
CONSTANT
MV/A/M
0.5 39 11 46
0.75 26 14 31
1 19.5 17 22
1.5 13.3 21 15
2.5 7.98 30 9.1
4 4.95 41 5.7
6 3.3 53 3.8
10 1.91 75 2.2
16 1.21 100 1.4
25 0.78 136 0.89
35 0.554 167 0.64
50 0.386 204 0.45
70 0.272 259 0.32
95 0.206 321 0.24
120 0.161 374 0.19
150 0.129 429 0.15
185 0.106 496 0.13
240 0.0801 595 0.092
300 0.0641 680 0.073
400 0.06 868 @70 C 0.145

The voltage drop figures are for one cable only. For other circuit arrangements they should be adjusted as follows:

Single-phase 50Hz ac or 2-wire dc circuit's

x2

Three-phase 50Hz ac circuit's

x1.732

BS 6231 Instrumentation Cables

Range & Dimensions for BS 6231 Instrumentation cables

SIZE
mm²

STRANDING
mm

SIZE
AWG

UL STYLE
NUMBER

NOMINAL
INSULATION
mm

NOMINAL
OVERALL
DIAMETER
mm

WEIGHT
kg/km

0.5

16/0.20

22

1015

0.8

2.6

12

0.75

24/0.20

20

1015

0.8

2.8

15

1

32/0.20

18

1015

0.8

3

18

1.5

30/0.25

16

1015

0.9

3.3

23

2.5

50/0.25

14

1015

1.0

3.7

34

4

56/0.30

12

1015

1.0

4.4

50

6

84/0.30

10

1015

1.3

5.1

71

10

80/0.40

8

1028

1.5

6.9

123

16

126/0.40

6

1283

1.5

8.6

209

25

196/0.40

4

1283

1.6

10.5

296

35

276/0.40

2

1283

2.0

11.9

400

50

396/0.40

1

1284

2.0

14.4

582

70

360/0.50

2/0

1284

2.0

16.7

796

95

475/0.50

3/0

1284

2.3

19

1025

120

608/0.50

4/0

1284

2.4

20.5

1282

150

756/0.50

MCM300

104

2.4

23.14

1627

185

925/0.50

MCM350

104

2.4

25.4

1959

240

1221/0.50

MCM500

104

2.8

28.66

2254

300

1525/0.50

MCM600

1015

-

31.5

3157

400

2013/0.50

MCM800

1284

-

36

4051