Wiring Connections Built for Manufactured Housing Standards
Mobile home electrical hookups and disconnects in Missoula for properties where the service entrance, feeder wiring, or pedestal connection doesn't meet current code requirements
Manufactured and mobile homes follow a distinct set of electrical standards that differ from site-built residential construction—HUD code for the home itself, and NEC Article 550 for the site-side electrical work connecting it to utility power. Edison Electric performs mobile home electrical hookups and disconnects in Missoula for property owners setting up new placements, moving a unit, or addressing a service connection that has deteriorated or was never properly installed to begin with.
The site-side hookup begins at the utility pedestal or service entrance, where a disconnect means is required within sight of the home—this is a code requirement that older mobile home parks in the area frequently don't meet for units that have been repositioned or had their pedestals grandfathered through changes in ownership. The feeder from that disconnect to the home's distribution panel is sized based on the home's amperage rating, which is marked on the data plate inside the unit. Undersized feeders are a common finding on homes that were originally connected during an era when 50-amp service was standard but the home has since had electric heat, central air, or additional circuits added.
Request an on-site review of your current service connection to identify what needs to be brought into compliance before utility connection or inspection.
What the Hookup and Disconnect Process Actually Involves
A proper mobile home hookup involves more than running a cord or cable from a pedestal to the home's inlet. The service entrance on the site side must include a weatherproof disconnect enclosure, correctly sized overcurrent protection, and a grounding electrode system tied to the site rather than relying solely on the home's internal grounding. Edison Electric installs the pedestal-side disconnect, runs the appropriate feeder conductor—aluminum or copper, sized to the load—and connects to the home's power inlet using the correct male connector type for the panel configuration.
After connection, the visible indicators are straightforward: circuits inside the home operate at the correct voltage, the main disconnect on the site operates cleanly, and the connection is weatherproofed at every point where conductors enter enclosures or the home's inlet housing. What won't be visible but matters just as much is that the grounding and bonding are completed correctly—a detail that separates a code-compliant installation from one that passes a visual check but creates a shock hazard at metal surfaces inside the home.
Disconnects involve safely de-energizing the feeder, removing the inlet connection, and—depending on whether the pedestal is being removed or reused—either capping the service or removing the equipment entirely. Permits are required for new hookups in Missoula, and the work must be inspected before utility power is authorized. That inspection requirement affects sequencing: rough-in work and the disconnect installation are typically inspected before the home is fully landed and skirted, since inspectors need access to the service entrance and grounding components.
What Property Owners Ask About This Work
The electrical requirements for manufactured home sites are specific enough that questions about what's required, what's included, and how the process is sequenced come up regularly. The answers below focus on how the work is actually performed.
What size feeder is required for a mobile home hookup?
The feeder ampacity is determined by the home's data plate, which lists the minimum supply circuit ampacity. Most single-wide manufactured homes require a 100-amp service, while double-wides with electric heat typically need 150 or 200 amps. The data plate is the authoritative source, not a general estimate.
Why is a disconnect required within sight of the home?
NEC Article 550 requires a disconnecting means within sight of and no more than 30 feet from the home's service entrance so that the feeder can be de-energized from outside the home without entering it. This is a safety requirement tied to emergency response, not just an inspection checkbox.
How does the grounding system for a mobile home site differ from a site-built home?
The site must have its own grounding electrode system—typically ground rods driven at the service disconnect—independent of the home's internal bonding. The home's chassis and frame are bonded at the panel, but the site-side ground is established separately at the disconnect location.
What happens during a disconnect when a mobile home is being moved?
The feeder is de-energized at the site disconnect, the inlet cord or conduit connection is removed from the home's power inlet, and the service entrance is either secured for reuse or removed. The utility service to the pedestal is coordinated with the utility provider separately.
How do older mobile home parks in Missoula affect what's required for a hookup?
Many older parks have pedestals that predate current NEC requirements for disconnect placement, enclosure type, or ground fault protection. When a unit is repositioned or a new unit is placed, the site-side wiring is brought up to current code as part of the hookup, regardless of what the adjacent pedestals look like.
Edison Electric also performs mobile home electrical hookups and disconnects in Lolo, Frenchtown, Clinton, and Bonner. When your placement is ready for electrical connection or you need an existing connection properly evaluated, contact Edison Electric to schedule the site work and coordinate inspection timing.
