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 display the Apple Watch app icon.

• Ancor wire recommendations added
• Various bug fixes

Ratings and Reviews

3.7 out of 5
11 Ratings

11 Ratings

beniwood ,

Needs an update for 48v systems

This app is a useful utility for calculating specifications of DC electrical systems, as found on boats. Easy to use and pretty intuitive.
There is a trend toward 48v systems now, with Integrel systems high powered alternators and Oceanvolt propulsion systems. This is leading to more 48v battery banks and applications like 48v windlasses and winches, air conditioning, etc. So I was surprised to see that this app didn’t include 48v, but did include 32v.

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.

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.


  • Family Sharing

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

You Might Also Like