Table C.3 Maximum Number of Conductors in Flexible Metal Conduit (FMC)

(Based on Chapter 9: Table 1, Table 4, and Table 5)

Type Conductor Size
(AWG/kcmil)
Trade Size (in)
3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 3 1/2 4
THHN,
THWN,
THWN-2
14 4 13 22 33 52 76 135 202 291 396 518
12 3 9 16 24 38 56 98 147 212 289 378
10 1 6 10 15 24 35 62 93 134 182 238
8 1 3 6 9 14 20 35 53 77 105 137
6 1 2 4 6 10 14 25 38 55 76 99
4 0 1 2 4 6 9 16 24 34 46 61
3 0 1 1 3 5 7 13 20 29 39 51
2 0 1 1 3 4 6 11 17 24 33 43
1 0 1 1 1 3 4 8 12 18 24 32
1/0 0 1 1 1 2 4 7 10 15 20 27
2/0 0 0 1 1 1 3 6 9 12 17 22
3/0 0 0 1 1 1 2 5 7 10 14 18
4/0 0 0 1 1 1 1 4 6 8 12 15
250 0 0 0 1 1 1 3 5 7 9 12
300 0 0 0 1 1 1 3 4 6 8 11
350 0 0 0 1 1 1 2 3 5 7 9
400 0 0 0 0 1 1 1 3 5 6 8
500 0 0 0 0 1 1 1 2 4 5 7
600 0 0 0 0 0 1 1 1 3 4 5
700 0 0 0 0 0 1 1 1 3 4 5
750 0 0 0 0 0 1 1 1 2 3 4
800 0 0 0 0 0 1 1 1 2 3 4
900 0 0 0 0 0 0 1 1 1 3 4
1000 0 0 0 0 0 0 1 1 1 3 3