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Adding an EV charger? Can your panel take it?

Tally your home's electrical loads and see your estimated demand in amps — and whether your panel still has room. Uses the NEC optional method.

Your home

Square footage drives the general lighting load (3 VA/sq ft) plus standard kitchen + laundry circuits.

Living area

sq ft

Your panel

Major loads

Tap everything in (or coming to) the home.

estimated demand · 240V

0% of 200A panel

—

General + appliance demand0 VA

Heating / cooling (larger)0 VA

Total demand0 VA

Spare capacity0 A

Educational estimate using the NEC 220.82 optional method — not a permit-ready load calculation. Real sizing depends on exact nameplate ratings, continuous-load factors, existing conditions, and local amendments. A licensed electrician must perform the official calculation before any panel or service work.

WattWorks helps licensed electricians quote jobs like this in minutes — and never miss the follow-up.

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