Written by Peter
Master Electrician at PRO Electric plus HVAC, serving Fairfax, Loudoun, Arlington, and Prince William Counties. Virginia License #2705181607.
Hi, I am Peter, the Master Electrician at PRO Electric plus HVAC. If there is one thing that has changed about my workweek over the last couple of years, it is the number of homeowners who pull into their driveways in a new Tesla and then ask me the same set of questions. How do I charge this thing at home? How long does it take? What does it cost me? And will my panel even handle it? Out in the Dulles and Ashburn side of Loudoun County especially, those calls come in almost daily.
So here are the honest answers, the way I would give them to you standing in your garage. I will walk through charging a Tesla at home from the ground up, then cover the outlet and panel work that often comes with it, since many of the same folks were also searching for outlet repair and breaker help.
How to charge a Tesla at home: three speeds, two that matter
When people ask how to charge a Tesla at home, what they really want to know is which setup is worth the money. There are three levels, and only two of them belong in a conversation about your house.
Level 1 is the charger that comes with the car plugged into a regular 120-volt wall outlet, the same kind your lamp uses. It works, but it is slow. You are looking at roughly three to five miles of range added per hour. If you drive very little and you never let the battery get low, it can be enough. For most households, it is not.
Level 2 is the 240-volt setup, the same class of circuit as your electric dryer or range. This is what nearly everyone installs, and it is the heart of a good home charging plan. A Level 2 charger turns an overnight plug-in into a full battery by morning. This is the one we install for people, and there are two common ways to do it.
Level 3, the DC fast charging you see at the Supercharger stations, is not a home product. It needs commercial-grade power that no normal house has. So when we talk about charging at home, we are really talking about Level 2.
Tesla Wall Connector or a 14-50 outlet? Here is how I think about it
The two Level 2 options I install most often are the Tesla Wall Connector, which is hardwired into the wall, and a NEMA 14-50 outlet into which you plug the Tesla Mobile Connector. Both will charge your car overnight. They are just a little different in speed and feel.
Tesla Wall Connector (hardwired)
Delivers up to 48 amps on a 60 amp circuit, which is roughly up to 44 miles of range per hour on a Model 3 or Model Y. It is clean, permanent, and it is the fastest home option. Best pick if you drive a lot or you simply want the nicest setup.
NEMA 14-50 outlet with the Mobile Connector
Delivers around 32 amps, which is roughly 30 miles of range per hour. A little slower, and it uses the cable that came with your car. A fine choice for the average commuter, and it leaves you with a versatile 240-volt outlet in the garage.
From the field: For most of my Northern Virginia customers, either option charges the car overnight with room to spare, because almost nobody actually drains the battery to empty in a day. I usually steer heavy drivers and two Tesla households toward the hardwired Wall Connector, and I point lighter drivers toward the 14-50 to save a bit on the install.
How long does it take to charge a Tesla?
This is the question with the most confusing answers online, because the honest answer is that it depends on three things: how empty the battery is, how big the battery is, and how many amps your charger pushes. Let me make it simple.
On a Level 1 wall outlet, a full charge from low can take more than a day, which is why I do not recommend relying on it. On a proper Level 2 setup, you are adding somewhere between 30 and 44 miles of range every hour, so a battery that comes home fairly low fills up in roughly six to ten hours. That is the whole point. You plug in when you get home, you sleep, and you wake up to a full car.
In practice, the people I install for almost never start from empty. They top off ten or twenty percent overnight, the same way you charge a phone. Once you have Level 2 at home, the question of how long it takes mostly stops mattering, because the car is always ready in the morning.
How much does it cost to charge a Tesla at home?
Here is the part everyone likes. Charging at home is far cheaper than gas, and it is cheaper than the public Superchargers too. The math is straightforward once you know your electricity rate.
Your bill charges you per kilowatt-hour, or kWh. On Dominion Energy’s basic residential rate, most Northern Virginia homes are paying somewhere in the neighborhood of 16 to 18 cents per kWh right now, all in. A Tesla holds roughly 60 to 80 kWh depending on the model. So to fill one most of the way, you multiply the kWh you put in by your rate.
A real world snapshot
A full charge of about 70 kWh at roughly 17 cents per kWh comes out near eleven or twelve dollars.
Day to day, that works out to roughly four to five cents per mile of driving.
Compare that to filling a gas tank, and the savings add up fast over a year.
To pin down your own number, grab a recent Dominion bill, find your rate per kWh, and multiply it by your battery size. If you want to shave it even lower, Dominion offers a time of use plan that rewards charging overnight during off-peak hours, which is exactly when your Tesla is sitting in the garage anyway. That one change can take a real bite out of the cost.
Will your panel actually handle a charger?
This is the question homeowners forget to ask, and it is the one that matters most to me. A Level 2 charger is a big, steady load. Before I install one, I look at your electrical panel and do a load calculation to make sure there is room for it without overloading the service. A lot of the searches I see for an electrician for circuit breaker repair come from exactly this moment, when someone adds a charger to a panel that was already running close to full.
If your panel has open space and enough capacity, the install is clean and quick. If your panel is full, older, or already tripping breakers, we may need to add capacity or upgrade the panel first. That is not me upselling you. That is me keeping a continuous high-amp load from cooking a panel that was never sized for it.
Worth knowing: An EV charger install in Virginia needs a permit and an inspection. A licensed contractor pulls that permit, sizes the wire and breaker correctly, and makes sure the job passes. Skipping that step is how people end up with a charger that trips constantly or, worse, a connection that runs hot behind the wall.
While we are at it: outlet repair and GFCI outlets
A good number of the same homeowners who call about a charger also mention an outlet that has quit. So let me cover that too, because outlet trouble is one of the most common reasons people search for an electrician for outlet repair.
A dead outlet usually traces back to one of a few things: a tripped breaker, a worn outlet that has lost its grip on the plug, a loose wire connection behind the outlet, or a tripped GFCI somewhere upstream. That last one trips people up all the time. A single GFCI outlet in a bathroom or garage often protects several plain outlets downstream, so when that one trips, a whole string of outlets goes dead with no obvious cause.
When someone needs an electrician for GFCI outlet repair, the GFCI itself has usually reached the end of its life. These have real electronics inside, and they wear out, typically after ten to fifteen years, sometimes sooner near moisture. The signs are clear. It will not reset, or it provides no power, or you press TEST and nothing happens, which means it has stopped protecting you. A GFCI outlet that fails its own test gets replaced, not babied along.
Try this before you call:
- Check your panel for a tripped breaker and reset it once
- Look for a tripped GFCI in nearby bathrooms, the garage, or outdoors, and press RESET
- If a breaker or GFCI will not stay set, stop there and call us
Journeyman or master, and why local and licensed matters
Since folks search for everything from an electrician near me to a journeyman electrician, here is the quick version of who does what. A journeyman electrician is fully trained and licensed to do the hands-on work. A master electrician, which is what I am, has additional years and testing behind that license and is responsible for the design, the code compliance, and the permits. When you hire PRO Electric plus HVAC, you get that full backing on every job, from a single outlet to a full charger and panel.
The reason I push people toward a licensed local contractor for EV and panel work is simple. We know the Virginia code, we know what the local inspectors look for, and we are a short drive away when something needs a second look. That last part counts for a lot.
Where we work, and how to reach me
PRO Electric plus HVAC runs out of offices in Falls Church and Fairfax, and we cover Fairfax, Loudoun, Arlington, and Prince William Counties along with the surrounding Northern Virginia communities. Whether you just brought home a Tesla and want it charging overnight, your panel needs room to grow, or an outlet has gone dead on you, that is the work we do every day.
If you are ready to charge at home the right way, let me come take a look at your garage and your panel and give you a straight answer on the best setup for your house.
Get your Tesla charger installed by a licensed electrician
PRO Electric plus HVAC, Falls Church and Fairfax