Cable Size

Calculate the Cable Size, additional CPC and Circuit Breaker Size for Single Core Cables and Multi Core Cables!

Please note: The voltage is based on UK Voltage (230 / 400V).

Please note: Twin and Earth Cables have not been considered.

Please note: Unperforated Tray has not been considered as perforated trays are widely used in the construction industry due to air flow around the cables!

Please note: Buried cables have not been considered.

Please note: Only Thermosetting cables using copper cables have been used as they are the most common in the construction industry!

Please note: For single core cables, only cables installed in conduit / trunking has been considered as trunking / conduit provides mechanical protection!