Disclaimer

The recommended cable sizes are based upon information provided by the user and are intended as a guide only. The calculation is derived from BS7671 Requirements for Electrical Installation, IEE Wiring Regulations, Installation method 1 (Clipped Direct), for cable types BS5467 and BS6724 and assumes a 4% voltage drop at 240 and 415 volts.

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.