On Mon, 31 Jan 2011, Tony Duell wrote:
is start (wye?) connected with the star point being th
eneautral. Houses
get a single phase supply consisting of that neurral wire and one of the
phase wires -- to balance the load, neighbouring hosues in a road get
different phases [1]. Of coruse industral places get the full 2 phase
mains to run larger motors, etc. It's very difficult to convince the
electricity companies to run 3 phase mains into a normal house, though,
Maybe in the UK, but in Germany it's very usual to have three phases. For
example, our house gets three phases (fused at 63A each) which are then
distributed to the individual rooms (one phase here, another phase there,
and so on). The kitchen for example has in addition to the single phase
for the light and outlets a three-phase line for the stove. And it's not
unusual to have a red CEE outlet in some cases (we had one in the cellar
until we needed this additional three-phase line for the separate oven).
In France you can get three phases to your house (three-wire cable coming
into the house), it depends on your choice whether you actually have three
or only one phase available, e.g. you can have 1x60A (called "monophas?")
or 3x20A ("triphas?"), the price is the same.
Christian