iPhone Screenshots


Base on NEC code 2008. To calculate the current or the wire size from AWG 14 up to 2000 kcmil (depending on the type of conductor selected), base on table 310.16. Taking in consideration all the voltage drop and ambiance temperature adjustment factor and number of wires on the same raceway. This app is designed for journeymen electricians , construction workers who need a quick and easy calculation to get the job done. Because our foreman they do not like us to sit down with the NEC code book and a calculator to do the proper calculation. With this application will do the same job in less than 60 second.

NFPA 70 ©, National Electrical Code © and NEC © are registered trademarks of the National Fire Protection Association, Quincy, MA.

What's New

Version 2.2.0

iOS 8 Support.

Ratings and Reviews

great app


I'm Technical director at a 2230 seat theater. We frequently run long lengths of feeder carrying anywhere from 20A to 600A. Additionally, I'm in the middle of a rewire of my house. This app has already paid for itself many times over in time and convenience (very valuable in my book). The app takes all the variables in to account and is very easy to use.

My only recommendation is that there be a provision for saving and labeling calculations for comparison and/or shopping lists. I've had to recalculate the same run multiple times while standing in the store because I accidently hit the back button. -don't always have pen and paper handy... that's what the iphone is for!

Excellent product for the solar designer installer

Simplified Solar

This tool lets me do quick calculation for wire size and lenghs for the various solar run out in the field without carrying around NEC tables, WONDERFUL. Would be great if there were some way of outputing the underlying calculations and references table that we must supply to building inspectiors on occasion.

This app is great


For what it does this app is great.

Quit asking for the whole NEC in an app. Only NFPA can do that due to copyrights, and whenever they have done something similar on other platforms they have charged over $100.


9.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2009-2014 Dae Jung Myung


  • Family Sharing

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

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