On Tuesday 30 July 2019 08:30:50 Matthew Crews wrote: > On 7/29/19 12:57 PM, David Wright wrote: > > On Mon 29 Jul 2019 at 20:43:04 (+0100), Joe wrote: > >> On Mon, 29 Jul 2019 10:26:14 -0500 John Hasler <jhas...@newsguy.com> wrote: > >>> They don't have to be on the same branch circuit: just on the same > >>> "phase"[1]. There is probably a gadget available that bridges the > >>> signal between phases. > >>> > >>> [1] They aren't really phases but everyone calls them that. > >> > >> They are in my country. 3-phase, 240V RMS each phase to neutral, > >> 415V RMS between phases. > > > > Irrelevant in a domestic setting: it's illegal to have more than one > > phase in an ordinary house. Houses will have one phase each, so > > you'll share your phase with various neighbours scattered along the > > street. > > How do you figure? In the US most 240V outlets are 3 phase, and they > are relatively common. You need them for most ovens, washing machines, > and electric cars.
I'm 84, and have yet to see a 3 phase line into a house. ALL 3 wire housedrops are 240-252 volts center tapped with the centertap grounded at the butt-wrap on the can carrying pole and bare to the house weatherhead, and usually serving as the messenger wire for the other 2 hot wires. We do not consider that the 180 degree electrical phase makes a separate phase. Houses are equipt with service boxes that use both of these hot lines so on average the neutral current is balanced and quite low when everything is turned on. And I've never seen a 240 volt washing machine on the sales floor here. Any electric car that needed 3 phase to charge would be silly and would quickly be bankrupt, no one is going to buy a $35k Tesla when he finds the garage pluggin to charge it costs him another $20k. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>
