quick question.. reference voltage

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gaz2212

anyone no where in the 7671 anyone can find a quote or reg regarding reference voltage...

the question is

what conductor gives a known volage or reference voltage???
 
gaz2212 said:
anyone no where in the 7671 anyone can find a quote or reg regarding reference voltage...

the question is

what conductor gives a known volage or reference voltage???
Click to expand...

The answer would be the neutral conductor - 0 volts:)

I don't know if it's mentioned in the regs, but the reason is it's 'referenced' to earth (0v) at the star point in the transformer.
 
Last edited by a moderator:
Is that the full question?

Only reference I would use would be Earth!

e.g. How would you prove polarity at a TN-C-S supply point. ( No volt stick )

Ans. Sink a Earth spike and bring a lead to the point of test.:cool:
 
I also would say it is earth

If the supply companies transformer loses it's earth on the star point the neutral will float as it has no reference point
 
AEC said:
Is that the full question?

Only reference I would use would be Earth!
Click to expand...

True,
I did think of this way as well.

Bit of an ambiguos question, really.

Earth is at 0v and the neutral is referenced to this so......:) earth could be the answer.
 

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