Enter the power in Watts/kW or the current in Amperes that the cable must carry.
Calculates for both Single Phase (230V) and Three Phase (400V) systems.
Unlike generic calculators, this tool is tailored to the specific product range and manufacturing standards of Doncaster Cables , one of the UK’s largest cable manufacturers.
When designing or installing electrical systems, selecting the correct cable size isn't just a matter of efficiency—it's a matter of safety, compliance, and long-term reliability. Undersized cables lead to voltage drop, overheating, and potential fire risks, while oversized cables inflate material costs unnecessarily.