A simple cable sizing application. Using the British Standard (BS7671) Requirements for Electrical Installations, this application is built using the tables in Appendix 4 of the "regs".
It saves a lot of time in looking up your requirements for the cable you need.

Now including voltage drop values from the tables, and subsequent volt-drop per cable length calculator.

This app should serve only as a guide. Make sure you look up BS 7671 for more specific requirements.
Always consult a qualified electrician when undertaking any electrical work.

What’s New

Version 2.0.1

Rebuilt from the ground up using Swift and SwiftUI. 
Version 2.0.1: Eradicated a few minor bugs, reinstated the Voltage Drop Calculation section. Added notes to a couple of screens. Added a wee bit of custom colouring.

App Privacy

The developer, Brigand, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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