Pull box sizing

[J-R]

If using a 30"x30"x10" pull box 3 3" conduits entering side of box on the 10" side. 3 3" conduit leaving back side of the box opposite a removable cover.314.28(2) Ex refers me to 312.6a which gives me my bending radius and continues 6x raceway for angled pull. Do you still have to add each additional raceway to the 18" inches? Thanks for any help.

 

[augie47]

If the conduits are in the same row, you would need to at 6" for the (2) additional 3" conduits (2 x 3") to the 18" (6 x 3") for the one which would mean your opposite wall would need to be 24" so a 30" box should work. I would be more concerned that you might not have the 18" between raceway entries for conduits containing the same conductors.

 

[J-R]

Appreciate the help