[zeeguitarman]

What benefits would you have running a three phase service as opposed to running single phase.

[tkrussell]

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.

[waweru]

In terms of running costs, which is more expensive

[dumle29]

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.