Before you buy an EV, check what your panel can handle
The charger is rarely the expensive part. What decides the price is your service size and how far the meter sits from where you park.
Someone buys an electric car, gets it home, and calls us to put in a charger. They are expecting a couple hundred dollars and an afternoon. Sometimes that is exactly what it is. Sometimes it is not, and the difference usually has nothing to do with the car.
We have seen a sharp rise in EV charger calls lately, and the same gap keeps showing up.
A lot of people don't really consider the electrical demands before purchasing an EV car.
Jimmy, owner, Good Times Electric
Why 48 amps is a big ask
Most home Level 2 chargers draw 40 to 48 amps. On a newer house that is often fine. On an older one it can be the whole problem.
Homes roughly forty years old and older were frequently built with 100 amp service, back when a house simply did not draw as much. Put a 50 amp range, central air conditioning and a 30 amp water heater on that 100 amp service and do the arithmetic. There is not a spare 48 amps sitting there waiting.
That is the point where a charger install turns into a service upgrade, usually to 200 amps and in some cases 300. In Jimmy's experience, a job the homeowner expected to cost a few hundred dollars can land somewhere between three and six thousand.
That's six grand that they didn't account for whenever they bought the car.
Jimmy, owner, Good Times Electric
The garage sub-panel trap
This one catches a lot of people. They stand in the garage, see a panel on the wall a few feet from where the car parks, and assume the charger can simply tie into it.
Usually it cannot. Indoor sub-panels are commonly 60 to 100 amps, and a 60 amp sub-panel will not carry a 48 amp charger. A panel being close does not make it capable.
Where your meter sits decides the price
The biggest cost driver on most installs is not the charger at all. It is the distance between your electrical service (your meter and main panel) and the spot where the car actually parks.
Twenty to thirty feet along a garage wall is a straightforward job, often under an hour, typically in the $400 to $600 range. Put the service on the opposite side of a two-story house and the same install means running conduit, fishing through multiple attics and cutting drywall. That is half a day, and $2,500 and up.
Same charger. Same car. Different house.
What the charging levels actually deliver
A standard 120 volt outlet (Level 1) delivers roughly 1.4 to 1.9 kW. You will not come near a full charge overnight on it.
Level 2 runs from about 3.3 kW up to 19.2 kW, with most home installations landing between 7.2 and 11.5 kW. Moving from a 120 volt outlet to a 48 amp circuit puts you somewhere around six to eight times the charging rate.
One detail worth getting right: a NEMA 14-50 receptacle is a 50 amp circuit, and the electrical code limits a continuous load to 80 percent of the circuit rating. That makes 40 amps, about 9.6 kW, the real ceiling on that plug. A 48 amp charger needs a 60 amp circuit and is normally hardwired rather than plugged in.
And if a full service upgrade is not in the budget, dialing a charger down to 30 amps is a legitimate middle path. That is still roughly four times the rate of a 120 volt outlet.
Choosing a charger: the connector matters, the badge less so
Brand anxiety is mostly misplaced. In Jimmy's experience there is no meaningful performance gap between the mainstream units. What matters is that the connector matches your car.
Most non-Tesla EVs use the J1772 connector. Teslas use the NACS connector (SAE J3400) and can charge from a J1772 station with a small adapter. Non-Tesla vehicles are increasingly shipping with NACS too, so confirm what your specific car takes before ordering anything.
Expect roughly $600 to $1,200 for the unit itself. The most expensive Jimmy has come across have been the GM units.
As far as Tesla versus one of your other standard brands, I mean, as long as it's the right connector, it should work just fine.
Jimmy, owner, Good Times Electric
Three things to check before you sign for the car
None of this takes long, and it is the difference between a $500 install and a bill nobody planned for.
- Find your main panel and read the main breaker. That number is your service size.
- Note the distance from that panel to where the car will actually park, and whether the run crosses the house.
- Have an electrician look at it before you buy, not after the car is in the driveway.