Jess Askey Wrote: > I am in the U.S. and you are correct, we have 3-wire ~240V with a singel > > neutral and two hot ~120V taps that are 180 degress out of phase with a > > seperate ground. > > Maybe the 600V vs. 440V is due to the canadian/US exchange rate. :-P > > > Michaelwagner wrote: > > >This might be a good place to say where you are located > geographically > >(country is enough). > > > >The reason I say this is that homes are wired differently in Europe > and > >North America, and for power line network adaptors it may matter. > > > >In Europe (at least in Germany where I was), power is 220V, 50Hz, all > >the outlets in one house can reasonably be expected to be on the same > >side of the first external power company transformer. > > > >This is not true in Canada, and I expect not in the US either. > > > >In Canada, houses are supplied with symmettric 3 wire (plus ground) > >220-240V. That is, 3 wires come into the house, a Neutral (not > ground), > >and 2 other wires that are 180° out of phase. 110-120V to the outlets > is > >developed in half the house between Neutral and one phase, and in the > >other half of the house between Neutral and the other phase. So you > >cannot count on the two outlets you chose being in parallel. They may > >be on opposite sides of the transformer winding out on the street. > > > >I think the same is true in the US, although, frankly, when visiting > >the US I don't normally poke my head in other people's electrical > >entranceways, so I can't be sure. :-) > > > >FWIW, Canadian factories are supplied with 600V 3 phase, (which is a > >nice submultiple of a standard transmission voltage) and american > >factories (for some reason I can't figure out) are 440V 3 phase. And > >you thought we shared a common power grid? > > > > > > > >
If you have standard U.S. wiring and need to run one of these networks across both sides of the panel, you (or your electrician) can couple them with a capacitor. I did this years ago when I was running an X-10 control system. You can find a better description at http://www.x10.com/support/x10trou.htm. -- jeffmeh ------------------------------------------------------------------------ jeffmeh's Profile: http://forums.slimdevices.com/member.php?userid=3986 View this thread: http://forums.slimdevices.com/showthread.php?t=16579 _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
