Electrician’s Handbook

Contains adsIn-app purchases
4.6
106K reviews
5M+
Downloads
Content rating
Everyone
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About this app

For everyone whose work involves electricity — for professionals and enthusiasts.

This app is a springboard for further study of electrical engineering.

The app includes four sections: theory, electrical wiring diagrams, tests, and calculators.

The app offers over 55 concise articles and 7 calculators. Content is added and updated regularly — feel free to suggest topics.

Briefly covers voltage, current, power, short circuits, Ohm’s law, and much more.

Warning! When working with electrical equipment, electrical safety requirements must be strictly observed. Remember: electricity cannot be seen or heard. Be careful.
Updated on
Aug 20, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.6
103K reviews
Oaky R.
April 28, 2021
The app itself is useful and gorgeous. It lacks some info like ampere ratings, and I personally want to know how to install a two way switch. I dont even know a two way switch from a three way switch, but I know it is complicated. A switch is so simple. Electricity is not simple. Anyway, this app disapoints in its lack of textbook style knowlege. Two stars for you guys!
252 people found this review helpful
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Robert Thomas (Bob)
November 13, 2025
This thing is full of adds, and it seems to cover only european 50 hert electrical system. and it presents the theory as if it were talking to a fifth grader. Just not of any use to a retired electrical engineer 🙄 uninstalling!!
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Bucknor Michael
November 14, 2025
its handy if you want to catch up on electrical fundamental principles. really good
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What’s new

Minor fixes