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Three phase vs. Single phase

Asked Dec 6, 2006, 12:13 PM — 3 Answers
What benefits would you have running a three phase service as opposed to running single phase.

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tkrussell's Avatar
tkrussell Posts: 9,673, Reputation: 3698
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#2

Dec 6, 2006, 04:15 PM


A 3 phase service can deliver more power (wattage) at less voltage with smaller gauge conductors, thus saving copper and installation costs are more efficient than a single phase service.

This is more evident when used for larger commercial or industrial equipment. A single phase motor larger than 10 HP is rare, where 3 phase motors can be much larger.

Chosing between either depends on the total load and types of loads that need to be served.
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waweru's Avatar
waweru Posts: 1, Reputation: 1
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#3

May 24, 2007, 11:43 PM
In terms of running costs, which is more expensive
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dumle29's Avatar
dumle29 Posts: 1, Reputation: 10
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#4

Mar 21, 2011, 12:52 PM
I was just reading some 2 year old question, and they talked about 3phase being rarely seen in ordenary houses. Here in Denmark, we use 3 phase for our tumble-driers dishwashers washing mashines. Its pretty normal to have everywhere here.

So I quess its pretty cost effective.
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