Voltage Drop Calculator
Uses the standard mV/A/m method from cable rating tables to estimate voltage drop over a cable run. Enter the design current, the cable's mV/A/m figure, and the cable length to get an estimated drop in volts — then check it against the 3% or 5% limits in BS 7671 for the circuit type.
Voltage Drop Calculator
Uses the standard mV/A/m method from cable tables.
Voltage drop ≈ 0.00 V
Check the result against the 3%/5% limits in BS 7671 for the circuit type.
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