Wiring a ring main - WIRING A RING MAIN A ring main is...

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WIRING A RING MAIN A ring main is exactly what it says on the tin. It is a ring of wires, circling your home, carrying the mains electricity to sockets on the way. It gets the power from the consumer unit delivers it to the sockets. As both ends of the ring are connected to the same terminals at the consumer unit, the current runs in both directions imposing less of a load on the cables. Electricity loses power over long lengths of cable and trying to put too much power through a cable which is not designed for it, is dangerous, so a ring main delivers power from both ends to keep the load as light as possible. The back of a socket on a ring main looks like this. The other type of circuit used to power your home is a radial circuit. There are not so common and can easily be turned into a ring circuit. See our project on radial circuits. There are still restrictions on how much power and for how long, a ring main may carry. This is reflected in the maximum distance a cable may be used for and the fuse rating it is given.
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This note was uploaded on 11/27/2009 for the course ENGR 23432 taught by Professor Puliyambath during the Spring '09 term at Punjab Engineering College.

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Wiring a ring main - WIRING A RING MAIN A ring main is...

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