More homeowners in Queen Creek and across the East Valley are bringing home electric vehicles. The first question is usually the same: can my electrical panel handle a charger? Many homes have electrical systems that weren’t designed for an EV charging for hours every night, on top of Arizona’s summer AC load. A little planning now keeps you from tripped breakers and rushed fixes later.
Short answer: Often, yes, but only a load calculation can tell you for sure. A Level 2 EV charger needs its own 240-volt circuit, and your panel needs both the capacity and the physical space for it. If capacity is tight, Randy recommends a power-monitoring, load-managing EV charger before a panel upgrade.
Can my electrical panel handle an EV charger?
Your panel’s size is only part of the answer. What matters is how much of your service your home already uses at its busiest, like a July afternoon with the AC, oven and dryer running, and whether there’s room left for a charger. Many older East Valley homes have 100-amp or 150-amp service, and many newer homes are already adding pools, spas and casitas. Both can run out of room faster than you’d expect.
Signs your panel may be near its limit:
- Lights flicker or dim when the AC or a big appliance starts
- Breakers trip often
- Outlets or the panel feel warm, or you hear buzzing
- There are no open spaces for new breakers
What’s the difference between Level 1 and Level 2 charging?
- Level 1 plugs into a standard 120-volt outlet and adds only a few miles of range per hour. It’s simple but slow: fine for hybrids or light use, but impractical for most daily commuters.
- Level 2 uses a 240-volt circuit, like your dryer, and charges much faster. For most daily drivers who charge overnight, Level 2 is the practical choice.
1. Start with a load calculation
A load calculation adds up what your home already uses (heating and cooling, water heater, range, dryer, pool equipment and general lighting and outlets) and checks whether your service can safely take on a charger. The electrical code treats EV charging as a continuous load, so the circuit is sized with extra headroom. We also check whether the panel has physical space for a new two-pole breaker.
If you haven’t had your panel looked at in a while, a panel inspection is a good first step. It also catches loose connections or problem breakers before you add a big new load.
2. Choose the right charger and location
Most homeowners do best with a hardwired Level 2 charger that has a smart app for scheduling and monitoring. Some prefer a 240-volt outlet so a plug-in charger can move with them. We’ll help you choose, and we’ll plan the location around where you park, how far the garage is from the panel and how the cord will reach the car.
Our EV charger installation page has more detail. In Gilbert or Mesa? See our guide to EV charger installation in Gilbert and Mesa.
3. Consider a load-managing EV charger before a panel upgrade
If the load calculation comes up short, a panel upgrade isn’t always the only answer. When capacity is tight, Randy recommends a power-monitoring EV charger with built-in load management. It watches your home’s total electrical use and automatically adjusts charging so the panel isn’t overloaded when the AC, oven and dryer are running, then resumes full charging when the house is quiet. That can let you charge at home without an immediate upgrade. We’ll tell you honestly which option fits your home.
4. Upgrade the panel when you really need to
If your panel is full, damaged or simply too small for where your home is headed, a panel upgrade gives you room for the charger and whatever comes next. We usually install Square D or Eaton panels and materials. We pull permits where required and coordinate SRP and APS disconnects and reconnects, so you don’t have to. Homeowners in Queen Creek and San Tan Valley can read more on our panel upgrades in Queen Creek and San Tan Valley page.
5. Plan for what’s next
Future-proofing means thinking beyond today. While we’re working on your panel or charger, it’s the easiest time to plan for:
- A future pool, spa or hot tub circuit
- A casita or ADU, home office or shop
- A second EV down the road
- Solar or home battery readiness
- A whole-home surge protector to help protect chargers and electronics from monsoon surges. The current electrical code requires one when a home’s electrical service is installed or replaced, so we include it on every job that touches the panel
Planning these together means fewer surprises and less chance of opening walls again later.
Do I need a permit for an EV charger?
In most cases, yes. New 240-volt circuits, EV charger installs and panel upgrades usually need an electrical permit and inspection from your city, town or county. Henderson’s pulls the permit where required, and our work is led by licensed electrician Randy Henderson, ROC CR-11 #341452.
Quick checklist before you buy a charger
- Find your panel and note its main breaker size
- Count the open breaker spaces (look only, don’t open the panel)
- Decide where you’ll park and charge
- Think about what else you might add in the next few years
- Call for a load calculation before you buy
When should I call an electrician?
- Before you buy or install any Level 2 charger
- If breakers trip when the AC, dryer and charger run together
- If an outlet, plug or charger cord feels hot or looks discolored. Stop using it.
- If you smell burning near the panel or charger
Never plug an EV charger into an extension cord or an adapter on a dryer outlet. If you see sparks or smoke, turn off the breaker if it’s safe, get away from it and call us. Call 911 for fire. We answer emergency calls 24/7.
Serving Queen Creek and the East Valley
We install EV chargers and upgrade panels in Queen Creek, San Tan Valley, Gilbert, Mesa, Chandler, Florence, Scottsdale, Apache Junction and Gold Canyon, Sun Lakes, Tempe, Cactus Forest, Coolidge, Paradise Valley and Ahwatukee.
Frequently asked questions
Can a 100-amp panel handle an EV charger?
Sometimes. It depends on how much of that 100 amps your home already uses at its busiest and whether there’s space for a new breaker. A load calculation gives the real answer. If capacity is tight, a power-monitoring, load-managing EV charger can sometimes avoid an upgrade.
Do I need a panel upgrade for a Level 2 charger?
Not always. Many homes can add a Level 2 charger on their existing panel. If the load calculation shows you’re short on capacity or space, Randy usually recommends a power-monitoring, load-managing EV charger first. A subpanel or a panel upgrade are the other options.
Should I get a hardwired charger or a 240-volt outlet?
Both work. A hardwired charger is a clean, permanent install. A 240-volt outlet lets you unplug and take a plug-in charger with you. We’ll help you pick based on your car, your garage and your plans.
Do I need a permit to install an EV charger?
In most cases, yes. New 240-volt circuits and EV charger installs usually need an electrical permit and inspection. Henderson’s pulls permits where required.
Can you add circuits for a pool, spa or casita at the same time?
Yes. If you’re adding a charger or upgrading a panel, it’s a good time to plan for other big loads too, so the panel and service are sized for where your home is headed.
Get your home EV-ready
Henderson’s Electric Solutions LLC is a family-owned electrical contractor in Queen Creek, owned by Randy and Tori Henderson. Randy is our licensed electrician (ROC CR-11 #341452), and we’re bonded, insured and BBB accredited. We’ll run the numbers, explain your options and install it right. Follow us on Facebook for more tips.
Call Randy at (480) 430-2775 or request an estimate online. Regular hours are Monday through Friday, 6 AM to 6 PM, and we answer emergency calls 24/7. Solutions Only - No Excuses.