What's New

- Fixed an issue with overcorrect calculations in the transformer module.

App Description

E-Calc is a professional electrical application for calculating many common electrical problems. This app is an essential tool for all electricians and electrical engineers. Unlike other similar apps E-Calc not only calculates simple formulas but returns code results including wire sizing, conduit sizing, fusing, overload size, ground and bond size and much more based on the National Electrical Code. The features of this app are too long to list but here are a few of the key ones;

- Basic construction calculator allows you to easily divide rooms for lighting in imperial or metric measurements.

- Calculate any single motor and get maximum overcurrent, maximum overload, minimum wire, minimum pipe, and minimum bond wire size.

- Calculate any transformer size and get KVA, FLA, pipe size, fuse and breaker size, bond size and ground size, on both primary and secondary. Easily choke down the transformer and get appropriate results for the modified demand load.

- Create any number of panel legends of any size and save as pdf, csv, or print them directly from your device.

- Calculate complex box fill or basic chart based box fill.

- Calculate the allowable ampacity of any wire type and deration situation.

- Calculate maximum number of similar sized wires in a given pipe size.

- Calculate pipe size required for a list of any number, size, and type of wire.

- Calculate required ground and bonding sizes.

- Easily calculate complicated voltage drop calculations. Get results for percentage voltage drop as well as maximum lengths of runs. Derating is also supported.

- Calculate ohm's law, motor fla, drill and tap sizes and voltage unbalance in the 'handy' module.

- Calculate recommeneded torque settings for all varieties of lugs and terminations.

- Convert many common units.

- Find NEMA codes and specs of receptacles.

- Easily access in app support with quick links to your phone's email.

iPhone Screenshots

(click to enlarge)

Electrical Calc USA screenshot 1 Electrical Calc USA screenshot 2 Electrical Calc USA screenshot 3 Electrical Calc USA screenshot 4 Electrical Calc USA screenshot 5

App Changes

  • November 18, 2011 New version 2.0
  • January 13, 2012 Price decrease: $9.99 -> $1.99
  • January 21, 2012 New version 2.0.2
  • February 01, 2012 Price increase: $1.99 -> $9.99
  • February 03, 2012 Price decrease: $9.99 -> $2.99
  • May 24, 2012 Price decrease: $2.99 -> $1.99
  • July 06, 2012 Price increase: $1.99 -> $4.99
  • July 13, 2012 New version 3.0
  • July 13, 2012 Price increase: $4.99 -> $9.99
  • July 20, 2012 Price decrease: $9.99 -> $4.99
  • August 08, 2012 New version 3.0.1
  • September 22, 2012 New version 3.1
  • October 18, 2012 New version 3.2
  • November 28, 2012 New version 3.2.1
  • March 22, 2013 Price decrease: $4.99 -> $1.99
  • March 23, 2013 Price increase: $1.99 -> $9.99
  • March 26, 2013 Price decrease: $9.99 -> $4.99
  • April 07, 2013 New version 3.2.2
  • July 28, 2013 Price increase: $4.99 -> $9.99
  • August 14, 2013 New version 3.2.3
  • September 16, 2013 New version 3.2.4
  • October 02, 2013 New version 3.3.1
  • October 21, 2013 New version 3.4
  • January 09, 2014 New version 3.5
  • January 14, 2014 New version 3.5.1
  • January 23, 2014 New version 3.5.2
  • February 14, 2014 New version 3.6
  • February 18, 2014 New version 3.6.1
  • February 21, 2014 New version 3.6.2
  • March 01, 2014 New version 3.6.3
  • March 21, 2014 New version 3.6.5
  • April 12, 2014 New version 3.7.0
  • April 28, 2014 New version 3.8.0
  • May 03, 2014 New version 3.8.1
  • June 23, 2014 New version 3.8.2
  • July 21, 2014 New version 3.8.3
  • July 27, 2014 New version 3.9.0
  • August 21, 2014 New version 4.0.0
  • September 19, 2014 New version 4.0.1
  • October 07, 2014 New version 4.0.2
  • October 21, 2014 New version 4.1.0
  • January 27, 2015 New version 4.2.0
  • December 04, 2016 Price increase: $9.99 -> $10.99
  • June 14, 2019 New version 4.2.5
  • June 14, 2019 Price decrease: $10.99 -> $6.99
  • June 16, 2019 Price decrease: $10.99 -> $6.99