electrical Calculator Scenario

Wire Sizing for 50 Amp Circuit at 100 Feet

50 amp circuits are common for EV chargers, sub-panels, welders, and large appliances. Proper sizing prevents voltage drop and overheating.

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Key Considerations

  • 1Minimum 6 AWG copper per NEC 310.16 for 50A
  • 2100 feet may require upsizing to 4 AWG
  • 3Aluminum is a cost-effective alternative (larger gauge)
  • 4Consider conduit fill requirements

Applicable Standards

NEC 310.16NEC 215.2

Scenario Parameters

current
50
cable Length
30
voltage
240
circuit Type
single_phase
cable Material
copper
power Factor
0.9

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