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RE: Household NEUTRAL is not really a return path



Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 07:32 PM 9/14/2005, you wrote:
Original poster: "Mccauley, Daniel H" <daniel.h.mccauley@xxxxxxxx>


I somehow doubt that three phase is part of common household AC as the original poster stated.


It is in Europe. Power distribution is very different in Europe than in the US, for historical and practical reasons. Many more houses on one transformer (several dozen as opposed to 4-8 in the US), and 240V Wye (aka Star) is common (416V between phases). Any given house might have one,two, or all three phases, particularly if you're in a flatblock or row house configuration.

Much of the electrical infrastructure was rebuilt after WWII because of the extensive damage, particularly in large cities. At the same time, they went away from oil insulation and started using a lot of gas insulated switchgear (SF6), because of the fire problem. The density of electrified households is also higher with big gaps between cities. There was no european equivalent of the REA (Rural Electrification Administration) before the war.



Dan


Maybe he's talking about thee phase?

Adam