Conduit Fill Table
Maximum # of Conductors or Fixture Wires in Rigid PVC Conduit - Schedule 40
Trade Size
in
Inches
Wire Size (THWN, THHN) Conductor Size AWG/kcmil
14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 250 300 350 400 500 600 700 750
1/2 11 8 5 3 1 1 1 1 1 1
3/4 21 15 9 5 4 2 1 1 1 1 1 1 1
1 34 25 15 9 6 4 3 3 1 1 1 1 1 1 1 1
1 1/4 60 43 27 16 11 7 6 5 3 3 2 1 1 1 1 1 1 1 1
1 1/2 82 59 37 21 15 9 8 7 5 4 3 3 2 1 1 1 1 1 1 1 1
2 135 99 62 36 26 16 13 11 8 7 6 5 4 3 3 2 1 1 1 1 1
Trade Size
in
Inches
Wire Size (THWN, THHN) Conductor Size AWG/kcmil
14 12 10 8 6 4 3 2 1 1/0 2/0 3/0 4/0 250 300 350 400 500 600 700 750
2 1/2 193 141 89 51 37 22 19 16 12 10 8 7 6 4 4 3 3 2 1 1 1
3 299 218 137 79 57 35 30 25 18 15 13 11 9 7 6 5 5 4 3 3 2
3 1/2 401 293 184 106 77 47 40 33 25 21 17 14 12 10 8 7 6 5 4 4 3
4 517 377 238 137 99 61 51 43 32 27 22 18 15 12 11 9 8 7 5 5 4
5 815 594 374 216 156 96 81 68 50 42 35 29 24 20 17 15 13 11 9 8 7
6 1178 859 541 312 225 138 117 98 73 61 51 42 35 28 24 21 19 16 13 11 11