I was talking today to a colleague who went to Japan to do an install and he mentioned something which he said he'd never got round to researching. ...
He said the supply there was 200 volts
3 phase ,100v 1 phase, 50 or 60 Hz depending on region in the country
Yet when he tested the supply between lines and earth he got 100v to earth on 2 phases and nothing between 3rd phase and earth,
(between phases it was 200v)
This made him suspect something was wrong so he consulted a native electrician who said this was correct?
Does anybody know how this system works????
It's just for my own curiosity really I've looked online but have yet to find anything which explains it well
He said the supply there was 200 volts
3 phase ,100v 1 phase, 50 or 60 Hz depending on region in the country
Yet when he tested the supply between lines and earth he got 100v to earth on 2 phases and nothing between 3rd phase and earth,
(between phases it was 200v)
This made him suspect something was wrong so he consulted a native electrician who said this was correct?
Does anybody know how this system works????
It's just for my own curiosity really I've looked online but have yet to find anything which explains it well