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#126170 - 06/09/05 06:14 AM NEC conduit size question
txnoob Offline
Junior Member

Registered: 06/08/05
Posts: 1
I am planning on running conduit from the main panel across the ceiling in a garage. It's just traversing the length of the garage to reach the other side.

In the near future, I plan on running:
-2 #4AWG
-4 #6AWG
-1 #8AWG
-1 #10AWG

What size PVC conduit would be appropriate? I was thinking 3" would be sufficient.

#126171 - 06/09/05 06:17 AM Re: NEC conduit size question
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Joe Tedesco, NEC Consultant

#126172 - 06/09/05 07:13 AM Re: NEC conduit size question
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
2#4s 4#6s 1#8 1#10 Right single conductors.
Thhn -Thwn -thwn-2 (Table 5) Back of code book.
#4=.0824x2= .1648
#6=.0507x4= .2028
#8=.0366x1= .0366
Total= .4253
(Table 4) Sch 40 (40% fill)=1 1/4 = .581
Derateing 310.15b2(Current carrying conductors)


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