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Old 12-20-12, 06:46 PM   #61
hamsterpower
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Quote:
Originally Posted by creeky View Post
have to add ... vis a vis your comment about two wire and three wire electrical wiring ...
I'm wiring my "studio" right now and a girlfriend gave me her copy of the 2010 electrical code book for ontario (canada). really good reference. 2011 adds some new arc fault requirements...
2 wire carries power to unswitched power plugs and to switched lights. one switch. one light. three wire carries two circuits of power/one neutral. or more likely. switched lights/power plugs. an example would be switches at the top and bottom of stairs uses three wire. or power plugs that are switched at the bottom plug and the top plug is always live. okay. i haven't seen this example ... but
so to see two wire and three wire is a sign your house has been wired correctly ... or at least to code.
I think you are a bit confused. I believe he was talking about 2 conductor/no ground, vs 2 conductor/with ground, not 3 conductors.

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