Cable Calculator

Pro Certs Software Ltd

About this app

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.

Check out our full collection of electrical apps & software packages for electricians at https://www.procertssoftware.com/apps/

What’s new

01/09/2025 v2.1.35
This brand new version has been completely redesigned and built from scratch.
- More cables added.
- More installation methods added.
- Single phase and three phase cable calcs.
- Radial circuits and ring final circuits.
- References the tables in BS 7671.
- References to specific regulation numbers.