Electrician Handbook — Basics
Electric circuit, voltage, ohm
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Description
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
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