On 07/07/2019 15:46, Tim+ wrote:
Harry Bloomfield wrote:
The Natural Philosopher has brought this to us :
It is three phase and the rail is one phase and is earthed.

Phases are only phased with respect to each other, they dont care about their
relationship with 'earth'.

I see how that would work now. I had in mind star, with the centre
point grounded - a delta output transformer with one point to ground
would do it.


Oh well,Im glad someone does. ;-) Our physics classes never progressed to
three phase power when I was at school and Ive never had a need to
understand it in any depth (or at all really) since then.

Blimey.

I sort of thought that anyone in a DIY group would have basic electrical
knowledge


Tim



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Labour - a bunch of rich people convincing poor people to vote for rich
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by telling poor people that "other" rich people are the reason they are
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Peter Thompson