AWG Wire Gauge & Resistance Calculator

Size power cables properly to avoid catastrophic voltage drop and melted wiring.

Wire Gauge (AWG) AWG

Wire Run Length meters

Load Current A

Conductor Diameter (mm)

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Total Voltage Drop (Loop) (V)

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Essential Tool (Amazon (voltcraft-20))

Tested and recommended for reliable hardware prototyping and accurate measurements.

        d_n = 0.127 \times 92^{\frac{36 - n}{39}} \text{ mm}
      

NEC recommends a maximum voltage drop of 3% for branch circuits to ensure device efficiency.