Conduit Fill Table

As you design a solar system you will often need to know how many conductors can fit into a conduit. This is a quick reference to help you.

  • Based on NEC2014 Table C
  • Wire Type is THHN, THWN, THWN-2

 

Conduit SizeConduit Type14AWG12AWG10AWG8AWG6AWG4AWG3AWG2AWG1AWG1/0AWG2/0AWG3/0AWG4/0AWG250kcmil300kcmil350kcmil400kcmil500kcmil
1/2"EMT1295321111100000000
PVC1185311111100000000
3/4"EMT221610642111111100000
PVC21159542111111100000
1"EMT352616974331111111100
PVC342515964331111111000
1-1/4"EMT61452816127654321111111
PVC60432716117653321111111
1-1/2"EMT846138221610875433211111
PVC82593721159875433211111
2"EMT1381016336261613118765433211
PVC135996236261613118765433211
2-1/2"EMT24117611164462824201512108765443
PVC19314185137221916121087644332
3"EMT3642661679669433630221916131197665
PVC299218137795735302518151311976554
3-1/2"EMT4763472191269156474029252017141110986
PVC401293184106774740332521171412108765
4"EMT6084432791611167160513732262218151311108
PVC5173772381379961514332272218151211987