# E-Calc Apprentice 2021

> E-Calc Apprentice 2021 (iPhone/iPad app by Snappy Appz Inc..)

- Source: https://appshunter.io/ios/app/e-calc-apprentice-2021/id1504565161 (this page in markdown: same URL + `.md`)
- Developer: [Snappy Appz Inc.](https://appshunter.io/developer/375591377)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 24 MB
- Languages: American English
- Released: 2020-03-29
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/e-calc-apprentice-2021/id1504565161/reviews.md

## What is E?

E-Calc Apprentice is an 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 Canadian Electric Code.  The features of this app are too long to list but here are a few of the key ones;

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

- Calculate transformer size and get FLA, pipe size, fuse and breaker size, bond size, on both primary and secondary.

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

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

- Calculate required bonding sizes.

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

- Calculate minimum burial depths for any situation including special situations including mechanical protection, under slab, and rock encased.

- Calculate any box fill situation in mL and cubic inch.

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

- Convert many common units with the built in conversion calculator.

- Includes handy diagrams for service masts, kitchen wiring and communication cabling.

- Calculate linear expansion of conduits.

- Ohm's law calculator.

- Strap spacing calculator.

- Voltage unbalance calculator.

- Find NEMA codes and specs of receptacles.

- Calculate residential single dwelling service sizes.


## Version history (last 5 releases)

### 2.1.0 — 2024-03-04

- Updated to minimum iOS 16.
- Updated AdMob ad engine.

### 2.0.10 — 2022-10-16

Updated for iOS 16.

### 2.0.9 — 2022-04-23

- Fixed transformer wire sizing to better reflect 2021 code.
- Updated to iOS 15.4.
- Updated AdMob.

### 2.0.8 — 2021-11-26

- Added detailed help text to service module.
- Updated AdMob to latest version.

### 2.0.7 — 2021-10-02

- Fixed spacing issues with pickers since iOS15.

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## More apps by Snappy Appz Inc.

- [Electrical Calc](https://appshunter.io/ios/app/electrical-calc/id375591374)
- [Construction Calc Lite](https://appshunter.io/ios/app/construction-calc-lite/id380648615)
- [Electrical Calc USA](https://appshunter.io/ios/app/electrical-calc-usa/id391412994)
- [Construction Calc Pro](https://appshunter.io/ios/app/construction-calc-pro/id458909118)
- [The Best No Smoking App](https://appshunter.io/ios/app/the-best-no-smoking-app/id458916516)
- [Electrical Calc Pro](https://appshunter.io/ios/app/electrical-calc-pro/id514793318)

All apps by Snappy Appz Inc.: https://appshunter.io/developer/375591377

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*