Cable Calculator

Calculate single & three phase radial & ring final circuits, based on BS 7671

A cable size calculator based on BS 7671 for calculating single phase and three phase radial circuits and single phase ring final circuits.

Calculate the minimum required cable size based on the tables within BS 7671 and print or save the results.

STEP 1: Enter your design criteria and select a cable type.

STEP 2: Select an installation method, ambient temperate and grouping.

Option to enter a circuit reference and circuit description.

Option to enter a client name and installation address.

Option to add a signatory.

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