Standing Charges: difference if 3-phase v single-phase?

Mister_G

Certainly NOT 480v then!

gm0

OK fair cop.  Not sure which neuron that came from.  It must come up somewhere.

1.73 and 1.4 on within spec mains at 253V rms is 618V peak. Want more ?

I am not sure it makes a difference as it hopefully very briefly blows across your chest before your protection solution fires.  Ah that felt a bit better than last time.  The farmer must be running the grain dryers.  We *could* define some inductive and reactive loads for particular phases and get trig tables out and come up with ranges and more numbers if that's your thing

But my correctly called out prior innacuracy and setting general pedantry aside - the point I was making stands. 

Don't hold different lives in each hand and provide an earth path to either or both.

This is best done by more than one not being there in domestic house wiring. 

Fit only where essential direct to a workshop or a particularly big heatpump. 

Cross phase sockets not adjacent.  Basically precautionary risk management thinking. 

Because 3ph is unfamiliar in domestic settings and introduces additional modest hazards to be risk managed.

That was it.

Ectophile

gm0 said:

The americans have their toy electricity 110v.  We have the moderately spicy 240v generally and quite good protection arrangements in current part P all told. Nice safe if large plugs too.   But 3 phase lives are best not held in each hand.  Twice the punch again. 

Most American homes get 240V.  But it's "split phase", so you can treat it as 2 x 120V for small appliances, while wiring big things like cookers straight across the 240V.

A few instead get 208/120V.  That's actually two phases off a three phase supply.