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Conduit Fill Calculator
Check NEC conduit fill limits per Chapter 9, Table 1.
Conduit Type
EMT
IMC
RGS (Rigid)
PVC Sch 40
Conduit Size
1/2"
3/4"
1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
3-1/2"
4"
Conductors
Qty
Gauge
14
12
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
300
350
400
500
Insulation
THHN
XHHW
THWN
RHH
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