Two phases to house - loss of neutral
in [Repair]
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From: Thomas Tornblom on 26 Nov 2009 02:21 Sylvia Else <sylvia(a)not.at.this.address> writes: > D Yuniskis wrote: >> Sylvia Else wrote: >>> D Yuniskis wrote: >>>> Have we decided that you really have two different *phases* >>>> vs. two different *legs* (but really "single phase" -- think >>>> center tapped transformer). >>> >>> Four wires on the power poles in the street, being a three phase >>> supply. We have three wires leading from the street, and two power >>> meters, plus a third meter for the off peak water supply. >> I'll ignore the comment about power meters as you can get >> power meters with all sorts of internal topologies (i.e., >> I can't deduce anything from that). >> So, does *your* house have "phases" A and B dropped to it; >> your neighbor gets B & C; *his* neighbor C & A; the large >> *business* at the end of the block A B & C, etc.? > > My neighbour appears only to have one phase. He commented to me that > he remembered that the previous owner of my property had got a second > phase installed, but didn't know why. > > Presumably the power company tries to balance phases. > > Sylvia. You can fairly easily identify whether you have a two legged single phase supply or two phases out of a three phase supply by measuring the AC voltage between the "phases". If you get 2 x your single phase voltage you have a two legged single phase supply. If you get 1.73 x your single phase voltage you have two phases out of a three phase supply. Thomas
From: Thomas Tornblom on 26 Nov 2009 02:26 Sylvia Else <sylvia(a)not.at.this.address> writes: > Sylvia Else wrote: >> Leaving the neutral failure issue aside, what would happen if I >> disabled the Earth leakage detectors and drew power across the two >> phases. >> Would the two utility meters correctly reflect the energy I consumed? yes. >> Sylvia. > > On second thoughts, it's pretty obvious that they wouldn't be correct, > and that I'd be significantly overcharged for the power. > > Sylvia. No you wouldn't. Each of the meters will indicate what you draw from the phases, and as you now have a higher voltage, you will also draw more power, which is what you are paying for. Thomas
From: Trevor Wilson on 26 Nov 2009 04:57 "Sylvia Else" <sylvia(a)not.at.this.address> wrote in message news:006c3c5f$0$8071$c3e8da3(a)news.astraweb.com... > Leaving the neutral failure issue aside, what would happen if I disabled > the Earth leakage detectors and drew power across the two phases. **Depends on the equipment you connected. The damage might range from mild to catastrophic. > > Would the two utility meters correctly reflect the energy I consumed? **Briefly, yes. -- Trevor Wilson www.rageaudio.com.au
From: Phil Allison on 26 Nov 2009 06:12 "Trevor Wilson" >> "Sillier than Anyone Else Alive " >> Leaving the neutral failure issue aside, what would happen if I disabled >> the Earth leakage detectors and drew power across the two phases. > > **Depends on the equipment you connected. The damage might range from mild > to catastrophic. ** TW has misread the Q. It is only about how domestic watt hour meters respond. >> Would the two utility meters correctly reflect the energy I consumed? > > **Briefly, yes. ** Indefinitely, actually. ..... Phil
From: baron on 26 Nov 2009 09:54
Sylvia Else Inscribed thus: > Baron wrote: >> Sylvia Else wrote: >> >>> baron wrote: >>>> Sylvia Else Inscribed thus: >>>> >>>>> Baron wrote: ********************************** >>>>>>> Don't know about the UK. >>>>>> The lights would go out ! Domestic properties usually have just >>>>>> a 240v single phase feed. Usually you would get a single phase >>>>>> running down one side of the street and another phase running >>>>>> down the other. ********************************** >>>>>> >>>>> I said I have two phases. >>>>> >>>>> Sylvia. >>>> Yes I know ! I answered the question above ! >>>> >>> You think I'm mistaken about having two phases? >>> >>> Sylvia. >> >> Are you really thick or just pretending. >> > > I'll opt for neither. So far you've said nothing relevant to the > thread, which concerns a house with two connected phases. > > If you think otherwise, try explaining yourself better. > > Sylvia. I wasn't answering about two phase systems. Someone said he didn't know about the UK. That was the bit I was replying to. -- Best Regards: Baron. |