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Electrical Wiring

Why in India 3 phase power is supplied to homes when all the household appliances require only single phase Is it for load sharing or economical distribution What else please?


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May 15, 2012 5:05AM

Three phase power is almost never supplied to a residence. Power is supplied in two 240-volt lines, referenced to ground, which is also typically wired, giving you three overhead (or underground) lines for supply to a typical residence. A larger apartment building might use three-phase power.


Some countries do indeed supply residences with three-phase supplies instead of single phase. For example, the recently-constructed, two-bedroom, villa in which I live here is Cyprus has a three-phase service and this can be confirmed by examining the three-phase energy meter and the three-phase distribution panel. I don't really know why this should be the case, other than for the purpose of load sharing, as the villa's load is typical of residences elsewhere.