Cable Calculator

Domestic Twin & Earth 2 Core SWA 3 Core SWA 4 Core SWA

In Conduit on Wall In Thermal Wall Clipped Direct

Voltage

110V / 230V / 415V

Load

Watts kW Amps

Set Load to 4× rated power/current for motor applications

Voltage Drop (%)

Cable Length (m)

Calculate Reset

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Required Cable Size (mm²)

Voltage Drop (volts)

Percentage Drop (%)

Load (Amps)

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Caution – for guidance ONLY