Electrician Handbook — Basics
Theory, wiring, calculator
USD 3.99 · Designed for iPad
Electrician knowledge in your pocket.
Maximum value, no ads.
Electrician’s Handbook — an app for electricians, students, and installers.
Theory, diagrams, and calculators in one place.
Works offline. No ads. No subscriptions.
— Theory
A variety of topics in electrical engineering: from basic concepts to grounding and lighting diagrams. Some topics include exercises with answers for self-check.
— Diagrams
Interactive electrical diagrams. You can interact with elements to better understand how they work.
— Calculators
A section with calculators, formulas, and useful reference tables.
— Community
A section where users can ask questions, share experience, and get advice from other members.
— Contents of the "Theory" section:
Basic concepts
• Voltage, current, resistance, power
• Ohm’s Law, Kirchhoff’s rules
• Parallel and series connections
• Short circuits, safety precautions
• Electrical engineering terms
Electromechanical converters
• Transformer, generator, electric motor
• Connecting a three-phase motor using a capacitor
Protection and automation devices
• Circuit breaker, RCD, RCBO
• Voltage monitoring relay, contactor, fuses
• Surge protection devices
Cables and wires
• Wire connection methods
• Selecting cross-section by current and power
• Color coding
• Electrical panel
Power stations and substations
• Nuclear, thermal, solar, hydro, wind, and geothermal power stations
Measuring instruments
• Voltmeter, ammeter, ohmmeter, multimeter
• Clamp meter
• Electricity meter
Grounding
• Types of grounding systems
• Equipotential bonding system
Lighting
• Incandescent, LED, and other types of lamps
• Lamp holders, bases, lumens, lux
• Color temperature
• LED strip
Work execution
• Socket repair
• Installation of flush-mounted and surface-mounted sockets
• Switch installation
Additional information
• Power supply categories
• Surge overvoltages
• IP protection rating
• Electrician’s tools
• Types of outlets and plugs, voltages in different countries
• Joule’s Law, Coulomb’s Law
• Right-hand and left-hand rules
— Contents of the "Diagrams" section:
• Switch (1 and 2 gang)
• Three-gang switch
• Two-way switch
• Two-way switch with intermediate switch
• Outlets and switch in one block
• Lighting with dimmer
• Motion sensor lighting
• Relay with light sensor
• Lighting with impulse relay
• Fluorescent lamp wiring
• Socket wiring diagrams
• Magnetic starter for motor
• Star and delta motor connection
— Contents of the "Calculators" section:
• Basic formula calculator
• Electricity cost calculator
• SI unit system and metric prefixes
• Diameter ↔ cross-section table
• AWG to mm and mm to AWG conversion
• Electronic component symbols
Ratings & Reviews
bug fix
The developer, Sergey Vavaev, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Sergey Vavaev
- Size
- 52.8 MB
- Category
- Education
- Compatibility
Requires iOS 14.5 or later.
- iPhone
Requires iOS 14.5 or later. - iPad
Requires iPadOS 14.5 or later. - iPod touch
Requires iOS 14.5 or later. - Mac
Requires macOS 11.3 or later and a Mac with Apple M1 chip or later.
- Languages
English and 28 more
- English, Arabic, Croatian, Czech, Danish, Dutch, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Kazakh, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish, Ukrainian, Uzbek, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2025 Sergey Vavaev
