Wire Size Calculator

NEC-compliant conductor sizing with voltage drop analysis

Load (Amps)

Voltage

One-Way Distance (feet)

Conductor Material

Phase

Max Voltage Drop

Temperature Rating

⚡ Recommended Wire Size

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AWG

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Actual Voltage Drop

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Volts Lost

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Ampacity Rating

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Power Loss (Watts)

NEC Ampacity Table (Table 310.16)

AWG/kcmil	60°C Cu	75°C Cu	90°C Cu	75°C Al	90°C Al

Disclaimer: This calculator provides estimates based on NEC Table 310.16 and Chapter 9, Table 8. Always verify with local codes and a licensed electrician. Derating factors for conduit fill, ambient temperature, and bundling are not included in this calculation.