Sheet Metal Junction Box Fill

[msteiner]

Where can I find the box fill requirements for a large sheet metal JB (24"x24"x42")?

 

[raider1]

What size conductors are going to be installed in said J-box?

Chris

 

[msteiner]

Ten three-phase circuits total, from 100A - 225A, all being spliced.

 

[don_resqcapt19]

Where the conductors are #4 and larger, the size of the box is based on the size of the conduit entries. There is no volume calculation for boxes with #4 and larger conductors. See 314.28.

 

[msteiner]

That's what I was looking for, thanks. I had already sized my box per 314.28, but wanted to make sure there wasn't a separate fill calculation.