Tech & Energy
EV Charger Amp Sizing Calculator
Bigger is not always better. 32A is plenty for most homes — 48-80A only matters if you drive 100+ mi daily.
Recommended amps
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- kWh needed/night
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- Hours @ recommendation
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- Wire size
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FAQ
When do I need 48A or higher? +
Daily driving over 100 miles, multi-EV households, or short charging windows (4-6 hrs).
NEC requirements? +
EVSE is a continuous load. Breaker must be 125% of charger amps: 32A charger = 40A breaker.