Electrical trouble in a mobile home rarely starts at the outlet you notice. It often traces back to a loose connection at the panel, aluminum branch wiring in an older home, a worn feeder from the meter pedestal, or the junction boxes where the two halves of a double-wide are wired together. This page covers how mobile home wiring differs from a site-built house, the problems that come up most often in Polk County, what Florida requires of the person doing the work, and how to get a licensed electrician out.
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How mobile home electrical systems are different
Homes built after June 15, 1976 follow the federal HUD code, and its electrical section (24 CFR 3280, Subpart I) requires the wiring to meet the National Electrical Code, which covers mobile and manufactured homes in Article 550. A few of those rules shape how your home is wired:
- The service is usually outside the home. The meter and main disconnect normally sit on a pole or pedestal next to the home, not on the home itself. Manufactured homes on a permanent foundation can be an exception.
- Four wires feed the home. The feeder from the pedestal to the home’s panel has two hot conductors, a neutral and a separate equipment ground (NEC 550.33).
- Neutral and ground stay apart in the home’s panel. Because the panel inside the home is not the service equipment, its neutral bar has to be isolated from the ground bar and the panel cabinet (NEC 550.16). A bonding screw left in place, or a three-wire feeder, is a common defect in older or modified homes.
- Double-wides are wired across the marriage line. Circuits that serve both halves are joined in junction boxes where the sections meet. Those connections are made on site, and a loose one can knock out outlets in one part of the home.
Common electrical problems in mobile homes
- Aluminum branch wiring. Many homes built in the mid-1960s to mid-1970s were wired with aluminum. It expands and oxidizes at connections, which can loosen them and cause overheating. The U.S. Consumer Product Safety Commission’s recommended repairs are the COPALUM crimp or AlumiConn connectors installed by a qualified electrician, not ordinary twist-on wire nuts.
- Older panels insurers flag. Federal Pacific Stab-Lok, Zinsco and some Challenger panels are often named on insurance 4-point inspections as needing replacement, along with panels that are rusted, double-tapped or out of space.
- Feeder and pedestal wear. Underground feeders can be damaged by digging or settling, and overhead masts can pull loose. A weak feeder shows up as dimming lights when the AC or water heater starts.
- Missing GFCI protection. Older homes often lack ground-fault protection in bathrooms, kitchens, laundry areas and outdoors, where current code calls for it.
- Do-it-yourself additions. Extra circuits for a window unit, a shed or an addition are sometimes run with the wrong wire size or without a permit, and they can overload the home’s panel.
Signs it is time to call
- Lights that flicker or dim when a large appliance starts
- Outlets or switch plates that feel warm, or a burning or hot-plastic smell
- A breaker that keeps tripping, or one that will not reset
- Buzzing or crackling from the panel
- Dead outlets in one area or one half of a double-wide
- Mild shocks when you touch an appliance or fixture
- An insurer or 4-point inspection that asks for panel or wiring work
Who can do the work in Florida
Electrical contracting is licensed under Part II of Chapter 489 of the Florida Statutes. A certified electrical contractor (license numbers starting with EC) can work anywhere in the state, and a registered electrical contractor (ER) can work in the local area where the registration is held. A handyman cannot legally do panel changes, new circuits or rewiring for hire.
Before you hire, search the company or license number at myfloridalicense.com and confirm the license is active.
Permits and the power company in Polk County
Panel replacements, service upgrades, new circuits and rewiring normally need an electrical permit, and your electrician should pull it. Inside a city such as Lakeland or Winter Haven, the city’s building department handles it. In unincorporated Polk County, it is the county Building Division, 330 W. Church St., Bartow, (863) 534-6080.
If the work needs the power shut off at the meter, your utility has to disconnect and reconnect it, and many will not reconnect until the work passes inspection. In Polk County that may be Lakeland Electric, Duke Energy, Tampa Electric or a city utility, depending on the address. If you rent your lot, ask park management who owns the meter pedestal and the feeder before any work starts, because in many parks they belong to the park.
Frequently asked questions
Does my older mobile home have aluminum wiring?
Homes built from the mid-1960s to the mid-1970s often do. An electrician can check at a few outlets or at the panel, where aluminum wire looks silver instead of copper-colored and may be marked “AL” on the cable jacket.
Why are the outlets dead on one side of my double-wide?
A tripped GFCI or breaker is the first thing to check. If those are fine, the cause is often a loose connection in a junction box at the marriage line, where the two halves are wired together. That calls for an electrician.
Will my insurance company make me replace my panel?
Many Florida insurers ask for a 4-point inspection on older homes, and panels such as Federal Pacific Stab-Lok and Zinsco are commonly flagged. Requirements vary by company, so ask your agent what they will accept.
Do I need a permit to replace my panel in Polk County?
Usually, yes. A panel change or service upgrade typically needs an electrical permit. Inside a city, ask that city’s building department. In unincorporated Polk, call the county Building Division at (863) 534-6080.
Get a free electrical repair quote
Tell us where the home is in Polk County (Lakeland, Winter Haven, Auburndale, Bartow, Mulberry, Haines City, Lake Wales or elsewhere), whether it is a single-wide or double-wide, about how old it is, and what is happening (flickering lights, a tripping breaker, dead outlets, a panel your insurer flagged). A local licensed electrician will follow up with a free quote.
Related reading: Mobile Home 4-Point Inspection · Mobile Home AC Repair · Mobile Home Plumbing Repair · Mobile Home Hurricane Checklist