🚀 go-pugleaf

On Nov 24, 12:16 pm, Sylvia Else <syl...@not.at.this.address> wrote:
> Phil Allison wrote:
> > "Dave Platt"
> >> Sylvia Else
>
> >>> I have to phases of power supply to my house - so three power lines, two
> >>> phases plus neutral.
>
> >>> I've on occasion wondered what would happen if we lost the neutral line.
> >>> It seems to me that we'd then have the voltage between the two phases
> >>> across two sets of appliances, one set attached to one phase, and the
> >>> other set attached to the other phase, with the two sets in series as a
> >>> result of their common connection to the neutral wire. Since the two
> >>> sets are unlikely to represent equal loads, the net result would be a
> >>> large overvoltage on one set of appliances.
>
> >>> My electrician says it's not an issue, but I can't see why.
> >> It's a huge issue.
>
> > ** Sylvia lives in Sydney, Australia and is a  MASSIVE  TROLL.
>
> > Nuts of her the post such a COUNTRY  SPECIFIC  message to a US newsgroup.
>
> Last time I checked, multiphase power supply was pretty universal, and
> the principles to be applied in understanding the consequences of faults
> would be the same. Or perhaps you want to argue that the different
> voltage in Australia is the deciding factor.
>
> Sylvia.


From what I can gather, pretty much every home in the US has a 120v -
0 - 120v system where the 2x 120v's are 180 degrees out of phase.
Between the 2 phases 240v is available for stoves, air conditioners
etc.

In Australia, most separate homes have a straight single phase 240v
supply, its not common for there to be 2,3 separate phases to the
average house.  Therefore the scenario Sylvia mentions is less likely
to occur, as not many people have this multi phase system.

The exception here could be blocks of flats, if the main neutral to
the building fails, and there isn't a good earth, the imbalance could
be a risk.