Electrical code & design calculators for electricians, engineers working with wiring systems and other electrical professionals.
Written by a working Electrician using it on a daily basis.
Calculations per 2011 National Electrical Code.
o Ampacity / Wire Size
- Wire Size -> Ampacity
- Ampacity Needed -> Wire Size
- Dwelling Service Size
- GEC Size
- EGC Size
o Box Fill
- Box Size from Wires / Devices
- Box Size from Cables / Devices
- Standard Box and Typical Plaster Ring Info
o Conduit Fill
- Conduit - Maximum # of Wires
- Conduit Size Needed
- Conduit % Full
- Conduit Size Information
- Wire Size Information
- Cover Depth
- Phone Pin Color Codes
- Ethernet (EIA/TIA568 a & B) Color Codes
- Receptacle Configurations
More features delivered as free upgrades.
We hope you find the app useful.
Added Feedback button on About screen
Fixed Bug causing some boxes to not display number of wires per size.
Ratings and Reviews
Honestly impressed. Very useful as a small electrical business owner. Cannot beat it for the price. Thanks guys👍👍
Verify your calcs
I’ve used this app for years. Recently I’ve noticed the voltage drop calcs are off. 200A single phase 3 wire calculates 2AWG at 250’. Don’t trust. Other features are great but the vd is very disappointing.
Electrician finds this useful
With Family Sharing set up, up to six family members can use this app.