A Level 2 charger is a big new load

A typical Level 2 home charger needs a dedicated 40–60A, 240V circuit — roughly the equivalent of adding another central air conditioner to your electrical panel. For homes still on 100A service, that single addition can push the whole system over its safe limit. This is why so many EV owners discover the panel problem only after the car is already in the garage.

Why the panel is usually the bottleneck

Electrical guide illustrationIllustrative photo

It is not just about empty breaker slots. A proper load calculation under NEC Article 220 adds up everything in the home — air conditioning, electric range, dryer, water heater, pool equipment — and checks the total against the service size. If that math is already tight, a new 50A charger has nowhere legal to go, even if you can physically fit the breaker. An electrician who skips the load calculation and just adds the circuit is cutting a corner on safety.

Your three options

  1. Full panel upgrade to 200A. The cleanest long-term fix. It covers the charger plus whatever comes next — ADU, induction range, heat pump — and removes the capacity question for decades.
  2. A listed load management device. These devices monitor total home current and automatically pause EV charging when the house load peaks, then resume when demand drops. They are code-recognized and cost far less than a panel upgrade, but they add complexity and only make sense when the numbers work.
  3. Right-size the charger. Not everyone needs 48A. A 20–32A charger on an existing spare circuit can fully recharge most commutes overnight. If the load calculation allows it, this is the cheapest legitimate path.

What to send us for a straight answer

Your EV model, the amperage printed on your main breaker handle, and three photos — the panel exterior, the label, and the main breaker. From that we can usually tell whether you are looking at option 1, 2, or 3, and what the permit path looks like in your city.

Tell us your EV model plus your current panel amperage, and send the three panel photos. We will give you a free preliminary assessment (not a final quote).