I get called for this a lot now, and the conversation almost always starts the same way: someone bought the car, plugged it into a garage outlet, and found out overnight charging is slower than they expected. So here is the order I would look at it in, before anybody buys hardware.

Level 1 and Level 2, in plain terms

Level 1 is the cord in the trunk plugged into a normal 120 volt outlet. It works. It is slow, and depending on the car and the outlet you are looking at somewhere in the range of a few miles of range per hour. If you drive a short commute around town and the car sits in the driveway all night every night, Level 1 genuinely may be enough, and I will tell you that rather than sell you a project.

Level 2 is a 240 volt circuit, the same class of supply a dryer or a range runs on, feeding a listed charging unit. Charging goes from overnight-if-you-are-lucky to comfortably full by morning. That is the one most people want once they have lived with the car for a month. It is also the one that needs real electrical work, because it is a new dedicated circuit out of your panel.

Which one you actually need

Look at your own driving, not the spec sheet. How many miles do you put on in a day, and how many hours is the car parked at home? If you are commuting over the bridge and back, or towing, or running two electric cars off one house, Level 2 stops being a luxury. If you work from home and take short trips, you may be fine on Level 1 for a while, and you can add Level 2 later.

The panel question, which is the real gate

Everything above assumes your electrical service can carry it. A Level 2 charger is one of the largest continuous loads a house takes on, and it runs for hours at a stretch. So before anything gets mounted on a wall, the honest first step is a load calculation: what your service is rated for, what is already connected, and what is left.

If the numbers do come back tight, that is its own decision with its own tradeoffs, and I have written about how to read the signs on the panel upgrades in Benicia page rather than repeat it here.

A dedicated circuit and the right breaker

Assuming the capacity is there, the install itself is straightforward work done carefully. The charger gets its own dedicated circuit back to the panel, sized to the unit and to the continuous-load rules, with a breaker matched to that circuit and conductors sized for the run. Nothing else shares it. That is not me being precious about it. A charger pulling near its rating for six hours is exactly the condition that finds a marginal connection, an undersized wire, or a breaker somebody put in because it fit.

Two other details worth knowing. Some units are hardwired and some plug into a 240 volt receptacle, and which one you use changes what the circuit looks like and what protection is required. And the run itself matters: distance from the panel to where the car parks affects conductor size, so a charger on the far side of the house is a different job than one on the garage wall the panel is mounted behind.

Why the dryer-outlet adapter is a bad trade

You can buy adapters that let a car pull from a dryer receptacle. I would not do it. That circuit was sized and installed for a dryer’s duty cycle, not for hours of continuous draw, it is usually shared with a laundry room that was never meant to see this load, and you are relying on an adapter chain instead of a fixed connection. A listed charging unit on its own properly sized circuit is what the equipment is designed around, and it is what an inspector expects to see. The convenience is not worth what you are gambling.

Garage or driveway, and the permit

Where the unit goes is worth thinking about before install day. In the garage you get a shorter run, weather protection, and easy mounting. Outside at the driveway you need equipment rated for outdoor use, thought about where the cord lands so it is not stretched across a walkway, and a mounting height that works for whoever is plugging in. Also think about which side of the car the port is on and how you actually pull in, because a beautifully installed charger on the wrong wall means you back in every night for the next decade.

Then there is the permit. A new 240 volt circuit for EV charging is permitted work in California, and in Benicia that goes through the City. I pull it, I schedule the inspection, and you get the signed-off paperwork. That matters more than people think: it is documentation when you sell the house, it is what your insurance would want to see, and it is the difference between an install someone stands behind and one nobody will admit to later. Permit and inspection handling is part of the job here, not a line item you get surprised by.

How I would approach it

I come look. I open the panel, read what is actually in there, run the load calculation, and walk out to where you park. Then we talk about what your options are, including the option where you stay on Level 1 for now. Towers EC runs out of Vacaville, roughly twenty minutes up the road, and Benicia work is routine for us. Thirty-plus years, Master Electrician, CA Lic. 847255, and the person who looks at the panel is the person who does the work.

You can see the kind of install detail we turn out in the work gallery, read more about electrical installation in Benicia, or just send the details through the contact page. Call (707) 803-6332 and tell me what you drive and what your panel says on the main breaker. That is usually enough to point you in the right direction on the phone.