EV charger installation is a bigger job than it looks, because the charger is one of the largest continuous loads in the house. If you live in Murfreesboro or elsewhere in Middle Tennessee, a call here connects you with a local electrician who can check your panel, size the circuit and handle the permit.
What goes into a Level 2 charger install
A Level 2 charger needs a dedicated 240-volt circuit sized for its rated current. Because EV charging is a continuous load, the circuit breaker and wire have to be sized with extra headroom under the National Electrical Code. The charger may be hardwired or plugged into a heavy-duty receptacle, and each approach has its own requirements for the device and the protection on the circuit.
Before any of that, the electrician looks at your service and panel. A load calculation tells you whether the existing service can carry the charger along with your AC, water heater, range and dryer. If it can't, options include a smaller charger setting, a load management device, or an electrical panel upgrade.
Signs you're ready for a home charger
- You've bought or ordered an electric vehicle or plug-in hybrid
- Level 1 charging isn't keeping up with your daily driving
- A second EV is coming and you need to plan for two chargers
- You're building a garage or remodeling and want to rough in a circuit now
- You're selling and want the garage ready for EV-owning buyers
Red flags with makeshift charging setups
- Using an extension cord to reach the car
- The charging cord plug or outlet feels hot after a session
- Breakers tripping when the car charges while the AC runs
- Lights dimming in the garage during charging
- A dryer outlet being shared between the dryer and the car
From load check to first charge
A typical job starts with a look at the panel label, the service size and your major appliances. The electrician then plans the circuit route from the panel to the parking spot, which may be short in an attached garage or longer to a detached garage or driveway post. The permit is pulled, the circuit and charger are installed, and an inspection is scheduled if your jurisdiction requires one. The home EV charger guide goes into more detail on planning.
- Service size and a load calculation for the whole house
- Available breaker spaces in the panel
- Correct wire gauge and breaker size for a continuous load
- GFCI protection requirements for the charger circuit
- Mounting location, cable reach and protection from vehicle damage
- Outdoor-rated equipment if the charger is outside
Safety first. EV charging draws high current for hours at a time, which is exactly the condition that exposes weak connections and undersized wiring. Don't use extension cords or adapters to reach a charger, and don't plug a charger into an old dryer or welder receptacle without having the circuit checked. Loose receptacle terminals under sustained load are a known cause of melted outlets, so a quality, properly installed receptacle or a hardwired charger matters.
How it usually works
Call to be connected
Call and share your vehicle, charger plans and garage layout. You'll be connected with a local electrician.
Load check and plan
The electrician looks at the panel, runs a load calculation and plans the circuit route.
Permit and install
The permit is handled, the dedicated circuit is run and the charger or receptacle is installed.
Inspect and test
After any required inspection, the charger is tested with your vehicle and settings are confirmed.
In Murfreesboro and Middle Tennessee homes
Hot Middle Tennessee summers mean your AC is working hard at the same evening hours many people plug in their cars, which is why the load calculation matters here. Many newer Murfreesboro-area homes have attached garages close to the panel, while older homes and rural properties may need a longer run to a detached garage. Some homeowners pair the charger with a garage subpanel to leave room for future circuits.
Related electrical problems
Seeing one of these at home? Each guide explains likely causes and what's safe to check before you call about ev charger installation.