CONDUIT SIZE vs. WIRE SIZE

Wire
Size AWG

Minimum Conduit Size (inches)
per Number of Type TW Wires.

Number of Wires Inside Conduit

2 3 4 5 6
14
12
10
8
6
4
2
1/0
2/0
3/0
1/2
1/2
1/2
1/2
3/4
1
1
1-1/4
1-1/2
1-1/2
1/2
1/2
1/2
3/4
1
1
1-1/4
1-1/2
1-1/2
2
1/2
1/2
1/2
3/4
1
1-1/4
1-1/4
2
2
2
1/2
1/2
1/2
1
1-1/4
1-1/4
1-1/2
2
2
2-1/2
1/2
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
2-1/2
2-1/2
See the National Electric Code for conduit sizes when using wire types other than Type TW.