White Wire to Breaker and Splice Inside Panel

[Michael Larson]

Originally Posted by Joey D'Adamo

I don't know if this helps anyone understand why a neutral is not required, but here's proof... my power is unfortunately for the example 120/208 (and a bit on the high side of that), but the idea is no different for 120/240 or 110/220.

In Canada, kitchen recepticals are wired "split-circuit," that is each half duplex is wired to a different phase with a common neutral. Here is a picture with my multimeter showing that there is indeed 208v (well.. 212v) between the two hots without involving the neutral.

On 120/240v, it would show ~240v instead.



Hope this helps.

With the split circuit in mind, how do you provide GFCI protection for the circuits without providing it in the panel?

[Joey D'Adamo]

Originally Posted by mlarson

With the split circuit in mind, how do you provide GFCI protection for the circuits without providing it in the panel?

Excellent question!

Two ways as of the 1998 code (the latest book I have). First they are only required within a certain distance from the sink; the rest are ok as is. I forget the distance and my code book is packed for my upcoming move, plus it may be different in the latest code.

However, It can be handled either:
a) 2 pole GFCI breaker
b) ammedment to the code that allows 20A circuits instead, thus allowing ordinary 20A GFCI recepticals to be installed where required. This section appears to be compatible with the US methods.

Now the new codes may tighten this more (I am not sure), but this place was built in 1982 and only has a GFCI in the bathroom.

However, without them being wired like that I wouldn't have been able to show that example