ΔV
Voltage Drop
Appendix 4 limits for installations supplied from the public LV network.
Limits
Lighting 3% (6.9 V); other uses 5% (11.5 V) at 230 V. For private supplies: 6% lighting, 8% other.
Formula
VD = (mV/A/m × Ib × L) / 1000.
Key regulations
525Appendix 4 section 6.4