Page 488 - ACEL 2024-2025 Catalogue

Useful Information - Current Carrying Capacity
SWA Cables – 6942XLH, 6943XLH, 6944XLH
Multicore 90°C Armoured Thermosetting Insulated Cables (COPPER CONDUCTORS)
CURRENT - CARRYING CAPACITY (amperes)
1.5 27 23 29 25 25 21
2.5 36 31 39 33 33 28
4 49 42 52 44 46 36
6 62 53 66 56 53 44
10 85 73 90 78 71 58
16 110 94 115 99 91 75
Conductor Cross Sectional Area
Reference Method C (clipped direct)
Reference Method E (in free air or on a perforated cable tray etc, horizontal or vertical)
Reference Method D (direct in ground or in ducting in ground, in or around buildings)
1 two-core cable single-phase a.c. or d.c.
1 three-or 1 four- core cable, three- phase a.c.
1 two-core cable single-phase a.c. or d.c.
1 three-or 1 four- core cable, three- phase a.c.
1 two-core cable single-phase a.c. or d.c.
1 three-or 1 four- core cable, three- phase a.c.
1
2
3
4
5
6
7
(mm2)
(A)
(A)
(A)
(A)
(A)
(A)
25 146 124 152 131
35 180 154 188 162
50 219 187 228 197
70 279 238 291 251
95 338 289 354 304
120 392 335 410 353
150 451 386 472 406
185 515 441 539 463
240 607 520 636 546
300 698 599 732 628
400 787 673 847 728
116 96
139 115
164 135
203 167
239 197
271 223
306 251
343 281
395 324
446 365
- -
NOTES:
• Where a conductor operates at a temperature exceeding 70°C it must be ascertained that the equipment connected to the
conductor is suitable for the conductor operating temperature (see Regulation 512.1.2)
• Where cables in this table are connected to equipment or accessories designed to operate at a temperature not exceeding 70°C,
the current ratings given in the equivalent table for 70°C thermoplastic insulated cables (Table 4D4A) must be used (see also Regulation 523.1)
VOLTAGE DROP (per ampere per metre)
1.5 31 31 27
2.5 19 19 16
4 12 12 10
6 7.9 7.9 6.8
10 4.7 4.7 4
16 2.9 2.9 2.5
Conductor Cross Sectional Area
Two-core cable d.c.
Two-core cable, single-phase a.c.
Three- or four-core cable, three-phase a.c.
1
2
3
4
(mm2)
(mV/A/m)
(mV/A/m)
(mV/A/m)
rxzrxz
25 1.85
35 1.35
50 0.98
70 0.67
95 0.49
120 0.39
150 0.31
185 0.25
240 0.195
300 0.155
400 0.12
1.85 0.16 1.9 1.6
1.35 0.155 1.35 1.15
0.99 0.155 1 0.86
0.67 0.15 0.69 0.59
0.5 0.15 0.52 0.43
0.4 0.145 0.42 0.34
0.32 0.145 0.35 0.28
0.26 0.145 0.29 0.22
0.2 0.14 0.24 0.175
0.16 0.14 0.21 0.14
0.13 0.14 0.19 0.115
0.14 1.65
0.135 1.15
0.135 0.87
0.13 0.6
0.13 0.45
0.13 0.37
0.125 0.3
0.125 0.26
0.125 0.21
0.12 0.185
0.12 0.165
488
For more information visit www.electric-center.co.uk
DISCLAIMER: This information has been supplied in good faith and the upmost care has been taken to ensure the data is accurate in its derivation from BS 7671.
However, this information should not be considered as a substitute for BS 7671, which should always be referred to. It remains the responsibility of the user to ensure all data and assumptions are correct and that any cable used is suitable for its intended purpose.
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