Home Electrical Panel Capacity

Check if your home electrical panel can support an EV charger. Calculate your current load and determine if you need a panel upgrade.

Main Panel Size (amps)

Estimated Current Load (%)

EV Charger Circuit (amps)

Electric Range/Oven

Electric Dryer

Results

Visualization

How It Works

Most homes built after 1990 have 200-amp electrical panels, which can typically support an EV charger without upgrades. Older homes with 100-amp panels may need an upgrade. The NEC (National Electrical Code) requires that your total load not exceed 80% of your panel capacity for continuous loads like EV charging. A typical Level 2 EV charger needs a 40-50 amp circuit (which provides 32-40 amps of continuous charging). Smart load management devices (like the NeoCharge or DCC-9) can share a 240V circuit between your dryer and EV charger, avoiding panel upgrades. Some new chargers also support dynamic load management, automatically reducing charging speed when other appliances are running.