kenaslan
Senior Member
- Location
- Billings MT
I was wondering if there was a chart anywhere that shows conduit body fills using TC-ER. I can find plenty on XHHW. A typical 3/C #12 is 0.428" dia and an area of .14387 sq/in. A 3/4" Form 35 LB has a cable capacity of 7.50" cubed. Per table 314.16(B) a #6awg requires 5.00" cubed and has an area of 0.059. the 3C #12 is 2.548 of the #6. So I am assuming I would multiply the 2.548 by 5.00 for a required min volume of 12.19" cubed that come out to a 1" LB with a max wire fill of 12.50" , or am I all messed up?