Domestic Electric Circuits
Domestic Electric Circuits
We receive power in our house through a main supply, commonly called mains. We receive AC voltage 220V and frequency 50 Hertz. We have three wires for our domestic circuits. These wires (live and neutral) pass into an electricity meter (connected in homes) through a main fuse. They are connected to the live wires in the home through a main switch. Usually, there are two separate circuits in a house,
. 15A Circuit which have higher power ratings.(geysers, refrigerators,ACs)
. 5A Circuit, which have lower power rating.(TV, bulbs, fans)
Each distribution circuit is provided with a separate fuse, so that, if a fault like short circuiting occurs in one circuit, its corresponding fuse blows off but the other circuit remains unaffected. Various distribution circuits are connected in parallel. All the electrical appliances like bulbs, fans and sockets, etc. are connected in parallel across the live wire and neutral wire.
Domestic Wiring:
The wiring inside a house is done according to the needs of its different areas. The electric wires entering the house go through a meter board. Here the live wire goes through a main fuse (or circuit breaker) and a meter that records the electric power consumed. Electricity bills are paid based on the readings of this meter. Removing the main fuse from its socket cuts the supply to the whole house. The main fuse blows when the sum of currents being drawn by the different circuits in the house exceeds a limit.
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After the meter, you generally have a distribution box. Here the live wire is connected to a number of wires for distribution of the supply to different sections of the house. Each of these wires thus becomes live. A fuse is connected to each of them. The live wires go to different sections of the house. This distribution method has an advantage. If there is an electrical fault in one section of the house, only the fuse connected to its live wire blows. The supply to the rest of the house remains unaffected.
Electricity generated at a power______________ is distributed to consumers from distribution stations. | |||
| Right Option : A | |||
| View Explanation | |||
We receive power in our house through a supply, commonly called _____________. | |||
| Right Option : B | |||
| View Explanation | |||
The switch is used in ____________ wire in our domestic circuits. | |||
| Right Option : A | |||
| View Explanation | |||
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