I need to size a pullbox for MV cables (13.2 kV) . There will be (2) sets of 3#250 + 4/0 traveling from "west to east", and (1) set of 3#250 + 4/0 traveling "north", after it is spliced from one of the main feeds going west to east.
I see under 314.71 which determines the size of pullboxes, there are two sections to follow - A for straight pulls, B for angle or U Pulls.
I understand the requirements of either case and I can do the calculations... I am having trouble trying to determine which code section to follow (A or B). I am leaning towards B since in the 314.28 for pullboxes under 1,000 volts, splices and u pulls/angles are grouped together. I wanted to confirm since MV is a different animal.
I see under 314.71 which determines the size of pullboxes, there are two sections to follow - A for straight pulls, B for angle or U Pulls.
I understand the requirements of either case and I can do the calculations... I am having trouble trying to determine which code section to follow (A or B). I am leaning towards B since in the 314.28 for pullboxes under 1,000 volts, splices and u pulls/angles are grouped together. I wanted to confirm since MV is a different animal.