Electrician Handbook & Wiring

The Electrician's Handbook is an app for electricians, students, and installers.
View theory, wiring diagrams, and calculators all in one place.
Supports offline use. No ads. No subscriptions.
- Theory
Covers a wealth of electrical engineering topics: from basic concepts to grounding systems and lighting circuit diagrams.
Some chapters include exercises with answers for self-checking.
- Circuit Diagrams
Interactive electrical wiring diagrams.
You can click on circuit components to understand how they work more intuitively.
- Calculators
A section containing various calculators, formulas, and useful reference tables.
- Community
Users can ask questions, share experiences, and get advice from other members.

- Contents of the "Theory" section:
Basic Concepts
• Voltage, current, resistance, power
• Ohm's law, Kirchhoff's laws
• Series and parallel connections
• Short circuits and safety measures
• Electrical engineering terms
Electromechanical Conversion Equipment
• Transformers, generators, motors
• Connection method of capacitor-start three-phase motors
Protection and Automation Equipment
• Circuit breakers, RCDs, RCBOs
• Voltage monitoring relays, contactors, fuses
• Surge protection devices
Cables and Wires
• Wire connection methods
• Selecting wire diameter based on current and power
• Color coding
• Distribution boards
Power Stations and Substations
• Nuclear power plants, thermal power plants, solar, hydro, wind, and geothermal power stations
Measuring Instruments
• Voltmeters, ammeters, ohmmeters, multimeters
• Clamp meters
• Watt-hour meters
Grounding
• Types of grounding systems
• Equipotential bonding systems
Lighting
• Types of lamps such as incandescent lamps, LEDs
• Lamp holders, lamp bases, lumens, illuminance (lux)
• Color temperature
• LED strip lights
Construction Operations
• Socket repair
• Surface-mounted and recessed socket installation
• Switch installation
Additional Information
• Power supply categories
• Voltage surges
• IP protection ratings
• Electrician's tools
• Socket and voltage types in different countries
• Joule's law, Coulomb's law
• Right-hand rule and left-hand rule

- Contents of the "Circuit Diagrams" section:
• Single-pole and double-pole switches
• Three-way switches
• Two-way switches
• Two-way + intermediate switches
• Socket and switch integrated modules
• Dimmable lighting (dimmer)
• Motion sensor lighting
• Light control relay lighting
• Pulse relay lighting
• Fluorescent lamp wiring diagram
• Socket wiring diagram
• Motor magnetic starter
• Star and delta connections of motors

- Contents of the "Calculators" section:
• Basic formula calculator
• Electricity cost calculator
• SI units and metric prefixes
• Diameter ↔ cross-sectional area conversion table
• AWG to mm / mm to AWG
• Electronic component symbols