Transitioning from THWN to NM
#1
07-11-19, 10:09 AM
Transitioning from THWN to NM
Wiring a sub panel. Running THWN #2 awg wire in 2" conduit. Then will splice to 2-3 NM and make the run to the main panel. From what I've read code says the length of the junction box has to be 8 x the largest raceway. Since I'm using 2" conduit that means my junction box has to be 16" long.
Can I use this box for a junction box?
https://www.zoro.com/wiegmann-straig...nk/i/G0504813/
Of course I have to add end caps.
TIA
Can I use this box for a junction box?
https://www.zoro.com/wiegmann-straig...nk/i/G0504813/
Of course I have to add end caps.
TIA
#6
07-11-19, 05:58 PM
Group Moderator
For splicing NEC specifies 6 times, not 8, so 2" conduit needs 12" box.
See NEC 314.28(A)(2)
See NEC 314.28(A)(2)
#7
07-11-19, 07:46 PM
Join Date: Feb 2016
Location: United States, Virginia
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I believe the sum of the other raceways is only of those entering the same wall or row of the box. If it's one in and one out on a different wall it's just the 6 times the largest conduit entering the box.
. It sure would reduce confusion.
#9
07-12-19, 03:10 PM
Group Moderator
If it's one in and one out on a different wall it's just the 6 times the largest conduit entering the box
