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United States - Residential is 240 volt single Phase. - split into 3 lines consisting of (2) 120 volt lines and a neutral line. This provides both 120 volt for standard wall outlets and combined 240 volts for appliances such as A/C, ranges, dryers and such.

There will be review on Thur and exam on Friday so, Pay Attention.

Jen

Oh great! Now we have take a written test. Shocking! (ouch...no pun intended).

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Here in Europe we've got three-phase 3x400/230V for most houses [apart from flats in blocks] and commercial / public buildings. The power is transmitted through the urban / rural areas by 3x15kV grid, and stepped down with local transformers. Malls, factories and other large objects have their own substations with transformers; for a group of houses / blocks, there's one nearby substation.

Elegant :-)

A little bit "out of topic" but see below more details about us in North America:

We also got 3 phases power here in Canada and USA but not to supply single house.

Canada 3 phases power is 208-230/575 Volts. USA is 208-230/460 Volts (60 Hz).

High voltage grid in small neighborhood is 14.4 kV. Larger cities is 25 kV.

In the Canadian province where I live, the voltage for long distance

power transmision is 735 kV. (Now you may know from which province I am from)

Back to the subject: I was very happy having found this forum

to discover I was not alone (or crazy) wearing high heels :w00t2:

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