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Multicore 90°C Armoured Thermosetting Insulated Cables (COPPER CONDUCTORS)

Tables Apply to: H6942XL, H6943XL, H6944XL, H6945XL, Tuff Sheath,

CURRENT-CARRYING CAPACITY (amperes)

Conductor Cross Sectional AreaReference 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.
1234567
(mm2)(A)(A)(A)(A)(A)(A)
1.5272329252521
2.5363139333328
4494252444636
6625366565344
10857390787158
1611094115999175
2514612415213111696
35180154188162139115
50219187228197164135
70279238291251203167
95338289354304239197
120392335410353271223
150451386472406306251
185515441539463343281
240607520636546395324
300698599732628446365
400787673847728--

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)

Conductor Cross Sectional AreaTwo-core cable d.c.Two-core cable, single-phase a.c.Three- or four-core cable, three-phase a.c.
1234
(mm2)(mV/A/m)(mV/A/m)(mV/A/m)
1.5313127
2.5191916
4121210
67.97.96.8
104.74.74
162.92.92.5
  rxzrxz
251.851.850.161.91.60.141.65
351.351.350.1551.351.150.1351.15
500.980.990.15510.860.1350.87
700.670.670.150.690.590.130.6
950.490.50.150.520.430.130.45
1200.390.40.1450.420.340.130.37
1500.310.320.1450.350.280.1250.3
1850.250.260.1450.290.220.1250.26
2400.1950.20.140.240.1750.1250.21
3000.1550.160.140.210.140.120.185
4000.120.130.140.190.1150.120.165

DISCLAIMER: This information has been supplied in good faith and the upmost care has been taken to ensure the data is accurate in it's derivation from BS7671.
However, this information should not be considered as a substitute for BS7671, 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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