Continuity between neutral and earth
On Thursday, 7 December 2017 11:10:34 UTC, wrote:
On Thu, 7 Dec 2017 09:23:40 -0000, "Brian Gaff"
wrote:
I was always told that Neutral was supposed to be earth, or almost so.
Otherwise we would have two lives.
Brian
One of which would then be a negative wouldn't it?
In the past I think some people referred to the black , later blue
wire in domestic wiring as the negative which was wrong but possibly
influenced with tinkering with cars where batteries have a positive
and negative pole, or maybe for old timers it was a hangover from the
days of DC mains.
The yellow 110 volt plugs intended for use with transformers in the UK
to give a 55-0-55 volt supply usaully have both pins identified with a
moulded L rather than an L and an N but I reckon few people using
or even wiring one have noticed.
G.Harman
Dc mains used the 2 phase 3 wire system, so half of end users got + and half got -ve dc supplied.
NT
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