Tri-Rated Control and Switchgear Cable

UL recognized, CSA Certified, to BS6231 600/1000V rated

Application

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

Construction

Flexible plain copper conductor, heat-resisting PVC insulated (105 Deg C) complete
with identification printing as follows:
“ AWG size, UL style number, 105 Deg C, 600 volt. VW-1, AWM,
CSA Type TEW 105 Deg C, BS 6231 85 Deg C and size in mm2.”

Minimum bending radius (static) : 5 x   outside dia.

Range & Dimensions

SIZE
MM2
STRANDING
MM
SIZE
AWG
UL STYLE
NUMBER
NOMINAL
OVERALL
DIAMETER
MM
WEIGHT
KG/KM
0.5 16/0.20 22 1015 2.6 12
0.75 24/0.20 20 1015 2.8 15
1 32/0.20 18 1015 3 18
1.5 30/0.25 16 1015 3.3 23
2.5 50/0.25 14 1015 3.7 34
4 56/0.30 12 1015 4.4 50
6 84/0.30 10 1015 5.1 71
10 80/0.40 8 1028 6.9 123
16 126/0.40 6 1283 8.6 209
25 196/0.40 4 1283 10.5 296
35 276/0.40 2 1283 11.9 400
50 396/0.40 1 1284 14.4 582
70 360/0.50 2/0 1284 16.7 796
95 475/0.50 3/0 1284 19 1025
120 608/0.50 4/0 1284 20.5 1282
150 756/0.50 MCM300 104 23.14 1627
185 925/0.50 MCM350 104 25.4 1959
240 1221/0.50 MCM500 104 28.66 2254
300 1525/0.50 MCM600 1015 31.5 3157
400 2013/0.50 MCM800 1284 36 4051

Current Ratings

The table below lists the full Thermal current ratings which will raise the Conductor temperature to 85 Deg C when one cable is installed in free air at an Ambient temperature of 45 Deg. 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 & BS6231 only.

SIZE
MM2
RESISTANCE
PER 1000M
OF 20 DEG 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

Current carrying capacity for cables to BS 6231

The following ratings are taken from BS 7671:1992 IEE wiring regulations& BS 7671:2001 IEE wiring regulations ambient temperature : 30C temperature rating:70C Reference method 1

Clipped direct 



CONDUCTOR CROSS SECTIONAL AREA (mm2)
2 CABLESSINGLE-PHASE
A.C. OR D.C.
FLAT & TOUCHING
3 OR 4 CABLESTHREE-PHASE
A.C.
FLAT & TOUCHING OR TREFOIL
1.0 15.5A 14A
1.5 20A 18A
2.5 27A 25A
4.0 37A 33A
6.0 47A 43A
10.0 65A 59A
16.0 87A 79A
25.0 114A 104A
35.0 141A 129A
50.0 182A 167A
70.0 234A 214A
95.0 285A 261A
120.0 330A 303A
150.0 381A 349A
185.0 436A 400A
240.0 515A 472A
300.0 594A 545A
400.0 694A 634A

 REFERENCE METHOD 3

ENCLOSED IN CONDUIT ON A WALL OR IN TRUNKING ETC. 

CONDUCTOR CROSS SECTIONAL AREA (mm2) 2 CABLES
SINGLE-PHASE
A.C. OR D.C.
3 OR 4 CABLES
THREE-PHASE
A.C.
1.0 13.5A 12A
1.5 17.5A 15.5A
2.5 24A 21A
4.0 32A 28A
6.0 41A 36A
10.0 57A 50A
16.0 76A 68A
25.0 101A 89A
35.0 125A 110A
50.0 151A 134A
70.0 192A 171A
95.0 232A 207A
120.0 269A 239A
150.0 300A 262A
185.0 341A 296A
240.0 400A 346A
300.0 458A 394A
400.0 546A 467A

REFERENCE METHOD 12 (FREE AIR) 








CROSS SECTIONAL AREA (mm2)
HORIZONTAL
FLATCONDUCTORSPACED
2 CABLES
SINGLE-PHASE
A.C. OR D.C.
OR THREE CABLES
THREE-PHASE A.C.
VERTICAL
FLAT SPACED
2 CABLES
SINGLE-PHASE
A.C. OR D.C.
OR THREE CABLES
THREE-PHASE.AC
TREFOIL


3 CABLES
TREFOIL
THREE-PHASE A.C.
25.0 146A 130A 110A
35.0 181A 162A 137A
50.0 219A 197A 167A
70.0 281A 254A 216A
95.0 341A 311A 264A
120.0 396A 362A 308A
150.0 456A 419A 356A
185.0 521A 480A 409A
240.0 615A 569A 485A
300.0 709A 659A 561A
400.0 852A 795A 656A