200-amp service upgrades • Sub-panels • Safe panel replacements
Roughly four in every ten panel upgrade calls we receive across Montello, WI begin the same way: someone tried to install a new appliance, EV charger, or HVAC unit and discovered the existing panel could not support it.
Electric Service Professionals handles panel work as the structural electrical task it is — not as a quick swap.
Full service conversion including new entrance cable, meter base coordination, and complete circuit rewiring.
For garages, workshops, additions, basements, and ADUs with proper feeder sizing and grounding.
Tripping breakers, burning smells, buzzing, discoloration, and failed bus bars.
Coordination with utility for damaged or upgraded service entrance across Montello.
Federal Pacific, Zinsco, Sylvania and other known unsafe panels.
We go far beyond a typical panel swap. Every lug is torqued to manufacturer specifications. Every breaker is verified as listed for the panel. Full thermal imaging and circuit testing under load. Complete documentation provided.
"The difference between a panel that works for now and one that lasts is attention to detail. We deliver the latter."
Common indicators include breakers that trip when multiple appliances run simultaneously, a 100-amp service in a home with significant modern load, plans to add an EV charger or central AC, or a panel brand on the recall list. A diagnostic visit in Montello, WI will give you a definitive answer with documentation.
Most 200-amp upgrades in Montello take one to two working days, with a planned utility outage of several hours during the swap. We coordinate the utility timing as part of the project.
Generally no. Modern panels require breakers listed for that specific panel. Reusing breakers from an older panel is a common shortcut and a common code violation.
Panel work spans a wide range depending on scope. A simple breaker replacement sits at the entry-level. A full 200-amp upgrade with new service entrance sits at the higher end. We provide written quotes after a site visit.
Yes. Panel upgrades in Montello typically require an inspection sign-off, and we coordinate with both the utility and the inspector as part of the project scope.
Panel work is the category where the right questions, asked early, save the most money and the most trouble. Schedule a consultation with Electric Service Professionals.
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