Domestic Wiring

Also called

domestic electric circuits · household wiring · live wire · neutral wire · earth wire · earthing · electric fuse · MCB · miniature circuit breaker · short circuit · overloading · electricity meter · parallel circuits · electric shock · main switch · घरेलू विद्युत परिपथ · विद्युत फ्यूज · भूसंपर्क तार · लघुपथन · अतिभारण

Topics

• Mains supply reaches a house through a live wire (red insulation) and a neutral wire (black); the earth wire is green.
• In India the potential difference between live and neutral is 220 V; the neutral is near earth potential.
• The wires pass through an electricity meter, a main fuse or MCB and then to the separate circuits of the house.
• Each appliance is connected across live and neutral in parallel, so each gets 220 V and can be switched on its own.
• The earth wire joins an appliance's metal body to a plate buried in the earth, so leaking current flows away safely.
• A short circuit happens when live and neutral touch directly: the current rises sharply.
• Overloading happens when too many appliances draw current from one socket, or when the supply voltage rises.
• A fuse wire melts, or an MCB trips, when the current is too large; this breaks the circuit before the wiring overheats.

About this model

A GLB file of about 429 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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