ATI
Member
- Location
- Kenosha,WI
I recently installed a 200A 3phase service across the back of a building. I ran 4 250XHHW conductors to the panel, along the way through 2 - 3" standard aluminum LB's. I was bounced for sizing of the LB's, but I oversized the conduit for the LB's. I've run a similar set-up many times and never have been bounced for the LB sizing.
So to the question, I can not find the formula for a LB body to calculate fill. I know from LB specs I can run 3 - 250's in a 2.5" ( even though I ran 3" ), but I need the formula for 4 conductors.
Thanks for any help or pointers
So to the question, I can not find the formula for a LB body to calculate fill. I know from LB specs I can run 3 - 250's in a 2.5" ( even though I ran 3" ), but I need the formula for 4 conductors.
Thanks for any help or pointers