Greenfield's compact 1950s and 1960s ranch homes represent one of the most electrically challenged housing segments in the Milwaukee suburbs. These homes were built when a 60-amp or 100-amp panel was considered adequate for a household — before window air conditioners, dishwashers, clothes dryers, and electric vehicle chargers became standard. Today, those same panels are asked to handle three or four times the electrical load they were designed for.
Federal Pacific Stab-Lok panels and Zinsco panels are a documented issue in the Layton Avenue and S. 76th Street neighborhoods. These panels, common in construction from the 1950s through the 1970s, have breakers that may fail to trip during overload conditions — creating a fire risk that many Greenfield homeowners don't know they have until a home inspection or an insurance renewal flags it. Replacement is the only real solution.
Burkhardt Heating, Cooling, Plumbing & Electric's licensed electricians serve Greenfield with the full range of residential electrical repair and upgrade services: panel replacement and 200-amp service upgrades, circuit additions, outlet and switch repair, GFCI and AFCI protection installation, whole-home rewiring in homes with deteriorated aluminum or knob-and-tube branch circuits, and dedicated circuit installation for EV chargers, home office equipment, and whole-home generators.
Burkhardt is available 24/7 for emergency electrical service in Greenfield. All work is performed under permit to Greenfield code. GreenSky financing is available for panel upgrades and larger rewiring projects.
EV Charger Installation
As electric vehicles become more common across Southeastern Wisconsin, many homeowners need a Level 2 EV charger installed in their garage. This typically requires a dedicated 240-volt, 50-amp circuit from your electrical panel — and in older homes, a panel upgrade to handle the additional load. Our licensed electricians handle the complete installation: panel assessment, circuit addition, charger mounting, and final inspection. We install all major EV charger brands including ChargePoint, Tesla Wall Connector, JuiceBox, and Grizzl-E.
We install and service panels from Square D, Eaton/Cutler-Hammer, Siemens, and GE. For generators, we're authorized Generac installers — headquartered right here in Waukesha, WI.
My Greenfield home has a 100-amp panel. Do I need to upgrade it?
If you have a full household of modern appliances — dishwasher, clothes dryer, central AC, and possibly an EV charger — a 100-amp service is likely strained. If you are planning to add an EV charger or significant new load, an upgrade to 200-amp service is usually necessary. Burkhardt will calculate your current load and advise on whether an upgrade is needed now or soon.
How do I find out if my Greenfield home has a Federal Pacific or Zinsco panel?
Look at your main electrical panel. Federal Pacific panels say 'Stab-Lok' on the breakers or inside the door. Zinsco panels may say 'Zinsco' or 'Magnetrip.' If you are unsure, open the panel door or call Burkhardt — our electricians can identify your panel brand and assess its condition during a site visit.
Can Burkhardt install an EV charger in my Greenfield garage?
Yes. Burkhardt installs Level 2 EV charger circuits throughout Greenfield. We assess your panel capacity, run the dedicated 240V circuit, and install the outlet or hardwired charger to your specification. If a panel upgrade is needed first, we handle that as well. Call 414-206-3049 to schedule.
Related Services
Learn more about our electrical services across southeastern Wisconsin.
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