Level 1 vs. Level 2
Level 1 uses a standard 120V outlet. Level 2 uses 240V and is the common home upgrade for faster overnight charging. DOE says single-family-home L1 and L2 charging is expected to handle much of future charging demand.
Charge at home. Start with the right circuit.
A focused guide to Level 2 EV charger installation in Chicago’s suburbs—cost factors, local electricians, permits and the questions to ask before anyone opens your panel.
Installation cost estimator
Build a quick low–high range from the electrical work your home may need. Charger hardware is optional.
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Know what you’re buying
Six decisions cover nearly everything a homeowner needs before requesting an on-site estimate.
Outlet vs. hardwired
A NEMA 14-50 setup is removable and flexible. Hardwiring removes the plug connection and is often chosen for a permanent outdoor unit or higher amperage. Ask which approach the charger maker allows.
Panel capacity
Look for two breaker spaces, but don’t stop there. The electrician should perform a load calculation. A panel can have open spaces and still lack the service capacity for the planned charging load.
Permits & inspection
Rules are local. Many suburbs require an electrical permit and inspection; wiring upgrades can trigger added paperwork. Naperville, for example, requires a permit and residential load calculation for wiring upgrades.
NACS vs. J1772
NACS is the connector associated with Tesla and increasingly adopted by other automakers. J1772 remains common for AC charging. Match the unit to your vehicle and confirm any adapter support before purchase.
Rebates
Programs and eligibility change. If ComEd serves your address, check its current EV charger incentives before buying equipment or starting work; some programs require specific equipment, rates or installer credentials.
Local installer directory
Electricians with EV-charging services in the western and northwestern suburbs. Listings are alphabetical by town—not ranked.
Scholl Elect Co
908 S Westgate St, Addison, IL
Tom's EV Home Charger Installation
517 Atwood Ct, Elmhurst, IL
JC Electric
200 N Michigan St A e, Elmhurst, IL
Action Electric
432 E Prairie Ave, Lombard, IL
Matt's Electricians
585 W State Rte 22, North Barrington, IL
RJ Electric Service Co.
2021 Midwest Rd Ste 200, Oak Brook, IL
IG Electrician & Generators
1200 Jorie Blvd, Oak Brook, IL
Verify licensing, insurance, permit responsibility, warranty, charger compatibility and current service area directly before hiring. Inclusion is not an endorsement.
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Request installation quotes
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- Describe your vehicle and charger
- Add the parking setup
- Compare scope—not just price
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Short answers
What to settle before the electrician arrives.
Can I use a normal wall outlet?
Yes, that is Level 1 charging at 120V. It can suit low daily mileage, but Level 2 at 240V is faster and more practical for many drivers.
Do I automatically need a panel upgrade?
No. Breaker space, total service size and the home’s calculated load all matter. Ask for a proper load calculation before accepting an upgrade.
Outlet or hardwired?
Choose an outlet for equipment flexibility; consider hardwiring for a permanent installation, outdoor exposure or a unit whose rated output requires it.
Will a Tesla charger work with another EV?
Sometimes. Confirm your car’s inlet—NACS or J1772—the charger connector, and manufacturer-supported adapters. Do not assume compatibility from the brand name alone.
Who obtains the permit?
Ask this in writing. Many electricians include permit coordination, but it may be a separate line item. Your municipality determines the actual requirement.
What should a quote include?
Charger or outlet, circuit amperage, breaker, wire and conduit route, trenching if any, surge or weather protection, permit, inspection, patching exclusions and workmanship warranty.