WIRE·FILL·CHARTNEC 2023 · CH. 9
FIG. 01 — INDEX

How Many Wires Fit in Conduit?

40 direct-answer pages for the most-searched wire-in-conduit combinations. Every page shows the exact NEC math, the worked example, and what changes when you go up or down a trade size.

FIG. 02

1/2" EMT — Article 358

01

#14 THHN

12 max @ 40%
02

#12 THHN

9 max @ 40%
03

#10 THHN

5 max @ 40%
04

#8 THHN

3 max @ 40%
05

#6 THHN

2 max @ 40%
FIG. 03

3/4" EMT — Article 358

01

#14 THHN

21 max @ 40%
02

#12 THHN

16 max @ 40%
03

#10 THHN

10 max @ 40%
04

#8 THHN

5 max @ 40%
05

#6 THHN

4 max @ 40%
FIG. 04

1" EMT — Article 358

01

#14 THHN

35 max @ 40%
02

#12 THHN

25 max @ 40%
03

#10 THHN

16 max @ 40%
04

#8 THHN

9 max @ 40%
05

#6 THHN

6 max @ 40%
FIG. 05

1-1/4" EMT — Article 358

01

#14 THHN

61 max @ 40%
02

#12 THHN

44 max @ 40%
03

#10 THHN

28 max @ 40%
04

#8 THHN

16 max @ 40%
05

#6 THHN

11 max @ 40%
FIG. 06

1-1/2" EMT — Article 358

01

#14 THHN

83 max @ 40%
02

#12 THHN

61 max @ 40%
03

#10 THHN

38 max @ 40%
04

#8 THHN

22 max @ 40%
05

#6 THHN

16 max @ 40%
FIG. 07

1/2" PVC-40 — Article 352

01

#14 THHN

11 max @ 40%
02

#12 THHN

8 max @ 40%
03

#10 THHN

5 max @ 40%
04

#8 THHN

3 max @ 40%
05

#6 THHN

2 max @ 40%
FIG. 08

3/4" PVC-40 — Article 352

01

#14 THHN

20 max @ 40%
02

#12 THHN

15 max @ 40%
03

#10 THHN

9 max @ 40%
04

#8 THHN

5 max @ 40%
05

#6 THHN

4 max @ 40%
FIG. 09

1" PVC-40 — Article 352

01

#14 THHN

34 max @ 40%
02

#12 THHN

25 max @ 40%
03

#10 THHN

15 max @ 40%
04

#8 THHN

9 max @ 40%
05

#6 THHN

6 max @ 40%