Re: Odd multiwire circuit
Originally posted by iwire: Once I have installed the required wall switch controlled lighting outlet in the DR would you also say a voluntarily added additional lighting outlet would have to be wall switch controlled?
Excellent question. My answer is "No." I would not say a voluntarily added additional lighting outlet would have to be wall switch-controlled. It could be, for example, a ceiling fixture with a pull chain.
210.70(A)(1) says you must have at least one lighting outlet with wall switch control. So install one wall switch-controlled ceiling light and one pull chain ceiling light. Do you have "at least one" wall switched lighting outlet? Yes. Can you point to it? Yes. When you point to the wall switched outlet, is there any doubt that you are pointing to the one that the code requires? No. Therefore, when you point to the pull-chain ceiling light, you can say that it need not be wall-switched, because the "at least one" required by code is this other one.
What is the difference between the two situations? Let's look at receptacles:
Originally posted by iwire: Once I have an outlet every 12' I have satisfied the requirement, I missing the language in the NEC that says additional ones are also now part of the required ones.
The code does not say they must be no more than 12 feet apart. That is our common misinterpretation. That is the "conversational English" way of describing the rule. But that is not what it says.
The language of 210.52(A) starts with, essentially, "you shall install receptacles in the following way." Then 210.52(A)(1) says that no point along a wall can be more than 6 feet from an outlet.
So you don't verify compliance by measuring the distance between receptacles.
You verify compliance by picking a point on the wall, and measuring the distance between that point and the nearest receptacle in either direction. If you find one within six feet, then that point along the wall is in compliance. Now pick another point along the wall.
That is the difference.