Generator Wire Size Calculator (AWG)
Calculate the correct wire gauge for your generator connection. Properly sizing wire prevents dangerous overheating and equipment-damaging voltage drop.
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Configuration
Amps
ft
Recommended Wire Size
--
AWG
Voltage Drop
--%
-- V lost
Wire Capacity
-- A
Max safe amps
Wire upsizing required due to voltage drop over distance.
Ampacity Reference Chart (75°C Rating)
| Gauge | Copper (Amps) | Aluminum (Amps) | Typical Generator Use |
|---|
Safety Note
This calculator aims for a maximum voltage drop of 3% to protect sensitive electronics. Always consult a qualified electrician and local codes (NEC) before installation. Aluminum wire must be sized larger than copper for the same load.