iPhone Screenshots


Circuit Wizard is designed to help electricians and enthusiasts determine wire sizing for a given installation based upon specific parameters using ABYC and Blue Sea Systems specifications.

Once a wire size is known you can then use that information to search for products offered by Blue Sea Systems in order to protect your circuit.

Based upon the popular web application located at http://cw.bluesea.com/, this version is designed to be run completely offline which should be useful in situations where an internet connected computer is not available.

What’s New

Version 1.3

This app has been updated by Apple to use the latest Apple signing certificate.

• Ancor wire recommendations added
• Various bug fixes

Ratings and Reviews

3.8 out of 5
9 Ratings

9 Ratings

Pyite20v ,

Seems this is just for auto or solar

No 110 voltage only 12,24,32 options.

BNG333 ,

Great app!

This is a great app! It lets you enter your specs and then lets you know what size wire to use safely. I have searched for other wire size tables on the net, but none are as good as this one in my opinion.

mkodama ,

Great for Automotive Wiring Too!

Very quick and easy way to select appropriate wire size based on voltage drop or wire ampacity.

I really wish the app had an option for 150°C wire insulation, as what's pretty commonly used in motorsports and aircraft; there is a large jump from 125°C to 200°C. In general, just allowing for a custom value for more of the settings would be an improvement. Also, for the duration field, you can just type off the screen as there is no character limit.

App Privacy

The developer, Blue Sea Systems, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

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


Blue Sea Systems, Inc.
4.7 MB

Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

You May Also Like