Vernon Tuck
Stainless
- Joined
- Oct 26, 2008
- Location
- Brenham, Texas
Gentlemen,
I am aware that as regards both bending conductors and running them through conduit, the NEC imposes limitations on both the bend radius (some multiple of the cross sectional area I think) AND the maximum "fill" of the conductors in the conduit, according to a formula (unknown to me) that is also based on the cross-sectional area.
At issue, is a plan to run the full 200 amp service entrance power supply about 20 - 25 feet to a new 200 amp sub-panel.
I happen to have enough 2/0 THHN copper wire to do the job. However, 2/0 is not quite good enough for 200 amps - never mind the overkill that I like to build into all my electrical projects.
I would like to run doubled 2/0 conductors from one box to the next. I've already received some excellent advice about this in here. One contributor explained the limitations and pointed me to some specialty double lugs that can be retrofitted into the existing boxes for this purpose.
Up to now I've run all conductors through thin wall 2" steel conduit. What I'm hoping somebody will help me with is this: Can I run six 2/0 conductors through a single conduit? The first part of this question is: Will six conductors even fit? The second part is: IF they will, IS THIS COMPLIANT WITH THE NEC code?
I suppose I could answer the first question for myself. However, I'd have to start chopping up some expensive copper cable into six strands. At present the cable is a single big coil. So, if you've been there and done that I will immensely appreciate the benefit of your experience.
If I can't run it all through a single conductor the fall-back plan will be to run double barrel conduit.
Thanks!
I am aware that as regards both bending conductors and running them through conduit, the NEC imposes limitations on both the bend radius (some multiple of the cross sectional area I think) AND the maximum "fill" of the conductors in the conduit, according to a formula (unknown to me) that is also based on the cross-sectional area.
At issue, is a plan to run the full 200 amp service entrance power supply about 20 - 25 feet to a new 200 amp sub-panel.
I happen to have enough 2/0 THHN copper wire to do the job. However, 2/0 is not quite good enough for 200 amps - never mind the overkill that I like to build into all my electrical projects.
I would like to run doubled 2/0 conductors from one box to the next. I've already received some excellent advice about this in here. One contributor explained the limitations and pointed me to some specialty double lugs that can be retrofitted into the existing boxes for this purpose.
Up to now I've run all conductors through thin wall 2" steel conduit. What I'm hoping somebody will help me with is this: Can I run six 2/0 conductors through a single conduit? The first part of this question is: Will six conductors even fit? The second part is: IF they will, IS THIS COMPLIANT WITH THE NEC code?
I suppose I could answer the first question for myself. However, I'd have to start chopping up some expensive copper cable into six strands. At present the cable is a single big coil. So, if you've been there and done that I will immensely appreciate the benefit of your experience.
If I can't run it all through a single conductor the fall-back plan will be to run double barrel conduit.
Thanks!