BS 7671 Appendix 4 Section 6 & Table 4D1B-4L4B

Voltage Drop Calculator

Calculate cable voltage drop (mV/A/m) with conductor temperature correction factors for single and three-phase circuits.

Cable mV/A/m

Design Current (Ib in A)

Length (L in Metres)

Calculated Voltage Drop (Vd)

9.00 V

3.91% of 230V Nominal Voltage

✓ Within BS 7671 5% Limit for Power Circuits (11.5 V max)