ECN Forum Forums General Topics of the Trade General Discussion Area box fill calculations

Well the same thing with the grounding conductor, even if it's 4 grounds in there, it's still 1. I guess the clamps will apply the same concept.

I believe the answer is 10 #12 conductors.


Peter

314.16 (B) (4): For each yoke or strap containing one or more devices or equipment, a double volume allowance in accordance with table 314.16 (B) shall be made for each yoke or strap based an the largest conductor connected to a device(s) or equipment supported by that yoke or strap.

Simply stated you count 2 wires for each yoke.

Chris

since the grounding conductor on the device originates outside the box it is counted a .....1, this counts as an additional EGC...250.146 and 316.16(B)(5) any jumpers that stay in the box are not counted

total is therefore ....11

togol,

Good observation, but I think you are referring to an additional IG grounding conductor.

I count...10

[This message has been edited by Redsy (edited 10-06-2005).]

Redsy.
....yep there it is,

I also typed the wrong reference ....should be ....314.16 (B)(5)
but it does seem to contradict ......(1) of the same section !