Wire Size Calculator
Inputs
Load (amps)
System voltage
120
208
240
277
480
Phase
Single-phase
Three-phase
Wire material
Copper
Aluminum
One-way distance (feet)
Max voltage drop (%)
1%
2%
3%
4%
5%
Conduit type
EMT
PVC
Rigid
Current-carrying conductors
3 or fewer
4-6
7-9
10+
Enter load and distance to calculate wire size
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