CONDUIT SIZE vs

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.