When making multiple 90 degree bends I realize that you must add the conduit diameter plus the center to center spacing in order to keep the spacing the same. My question is ........what is the formula to keep the stub ends equal so you do not have to trim the conduit ends (so the couplings will line up)??????
Making multiple 90 degree bends
- Thread starter Mattula
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- Location
- New Jersey
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- Journeyman Electrician
This is a duplicate post. Here is my answer from the other post:
You can't line up both ends without cutting. The inner conduits will always end up longer than the outer ones. For example if (4)-4" EMT's , spaced 1.5" apart, came out of a box and 90'd, the first elbow is say 30", the next would be about 36" the next about 42" and the last 48". If all the conduits were 10' long at the start each conduit would be 6" shorter than the one adjacent to it on the end opposite of the elbows. If you wanted the ends to line up you have to cut three of the conduits.
You can't line up both ends without cutting. The inner conduits will always end up longer than the outer ones. For example if (4)-4" EMT's , spaced 1.5" apart, came out of a box and 90'd, the first elbow is say 30", the next would be about 36" the next about 42" and the last 48". If all the conduits were 10' long at the start each conduit would be 6" shorter than the one adjacent to it on the end opposite of the elbows. If you wanted the ends to line up you have to cut three of the conduits.
- Location
- Chapel Hill, NC
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- Retired Electrical Contractor
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Yeah, what he said. 
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