iwire said:
If that was the case 310.4 would not need the exception for that exact scenario with control circuits.
We can argue this one for a long time. I feel that the exception is for the actual physical paralleling of conductors smaller than 1/0 in certain applications in raceways and cables.... not for "paralleling accomplished by switches."
Say that I had an enclosure that had a starter in it. In the cover of the enclosure, I put a start and a stop button and wire it for three-wire control. If the start button is held in, and the holding contact is closed, wire 2 and wire 3 are now in parallel. These conductors are in an enclosure, not a raceway or cable, and therefore would supposedly violate the exception. I suppose it can be said that the enclosure is also a raceway.... but I'm not sure about that.
What is your definition of electrically connected? Give me a reasonable definition, and I will see if I can come up with some absurdities concerning 310.4.
This is a great subject!:smile: