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Subject - bending radius
metaldome88 is there a blue print for measuring bending radii of conductors? (in order to feed (3) 1ph 400amp MB AC panels, I wanted to use power distribution blocks for the loads and pull 4/0 parallel but space is an issue so a 24"x24" cabinet to house the PDBs is the largest possible, and where the chases to the cabinet are located, some 4/0 would probably have two 45 degrees bends in it and I'm having a hard time visualizing what constitutes a violation of the 8x diameter rule when these odd bends are necessary.) I guess I'm asking if there are any illustrations/pictures available that may assist determining if this is a physically code compliant concept. Any insight would be greatly appreciated!
lctrc789 Article 370-54 is used for bending space for conductors. Then go back to 370-28 and find your pipe size and you are on right track for the 8 X rule.
If you want go to article 373-6(a) it may help you with your bending radiuses for your conductor size as well.
Also article 373-6(b) I don't see a problem with what you want to do with 24 x24 box providing you follow thses articles and common sense.