Labor is most of it, and labor is predictable
Materials vary with the panel, the breakers and what the utility requires. Labor does not vary much, because the work is the same sequence every time. A 150A or standard 200A upgrade is eight hours. A larger or higher-end home is ten. A meter base replacement adds three. A 200A main breaker replacement on its own is 2.6 hours, which is the number worth reading twice: a failing main breaker is not the same job as a failing panel, and it is roughly a third of the time.
How long each job takes
You may not need a full upgrade
A panel that trips, buzzes or feels warm is not automatically a replacement. Any electrician who quotes a panel replacement without opening the panel is guessing.
- A double-tapped breaker, two wires under one terminal, is a common inspection finding and about 45 minutes to correct.
- One failing breaker is a like-for-like swap with torque verification, half an hour.
- Nuisance tripping on an AFCI is usually the breaker rather than the panel, about an hour per circuit.
- An unlabeled panel needs labeling and circuit identification, about 90 minutes, a fraction of a replacement.
What makes a Southwest Florida panel different
Coastal humidity corrodes lugs, breakers and bus components. We carry corrosion repair as its own line of work because it comes up often enough to need one. Federal Pacific and Zinsco panels remain in houses across Lee and Charlotte counties, and both have documented histories of breakers that fail to trip under fault. A lot of panel work here is not failure at all: a generator interlock or an essential-load subpanel needs somewhere to land, and the existing panel has no room.
Common questions
Do I need 200A, or is 150A enough?
It depends on the loads the house has to run rather than square footage alone. Central air, an electric range, a pool pump, a tankless water heater and an EV charger are the loads that push a house past 150A.
Does a panel upgrade need a permit and inspection?
Yes. A service change is permitted and inspected work in every jurisdiction we operate in, and the utility has to disconnect and reconnect.
How long will my power be off?
For most of the working day. Eight hours for a standard upgrade, ten for a larger home.
Not sure which of these you have? That is the normal starting point.
Call 239-344-7173Written by the team at Caloosa Electric Service, licensed electrical contractor EC13005838, serving Lee, Collier, Charlotte and Hendry counties since 2000.
Panel upgrade, 200A standard home: 8 hours scheduled. Panel upgrade, larger home: 10 hours scheduled. Main breaker replacement only: 2.6 hours scheduled. These are our own figures, not industry averages.
Reviewed by a licensed electrician. Last updated August 2026.