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Generator Interlock Kit Installation Ann Arbor, MI
Run the furnace, fridge and sump pump from the portable you own, through a permitted panel interlock and an outdoor inlet box. Free written quote.
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3D Electric provides Generator Interlock Kit Installation Ann Arbor, MI for homeowners in the city and in Pittsfield and Scio townships who want a portable generator to carry the house through the main panel. The job is an interlock on the panel cover, a dedicated generator breaker and a power inlet box on an outside wall, all filed under an electrical permit. This page on Generator Interlock Kit Installation Ann Arbor, MI covers what is different about Ann Arbor houses: older panels, close lot lines, hilly yards and the city's STREAM permit system.
We are a family-owned, licensed and insured electrical contractor based in Belleville, about 20 miles east, and we have already installed generator equipment in Ann Arbor. Every quote is free and written down before work starts. For standby units and the rest of our local generator work, start at the Ann Arbor generator installation page. For the company and the area we cover, see the 3D Electric Ann Arbor overview.
Lectro's tip
Pick a level, dry spot for your generator now, well away from your windows and your neighbor's, so there is no guessing on storm night.
Why Ann Arbor homeowners pick an interlock kit
Ann Arbor earned the name Tree Town, and many of its streets still run DTE Energy lines under big, old canopies. On July 26, 2023, a storm left more than 176,000 DTE customers without power, and the National Weather Service reported fallen trees and limbs around Ann Arbor. DTE says it is rebuilding parts of the local grid through 2029, including southeast Ann Arbor. Limbs will still come down in the next storm.
An interlock kit is the low-cost way to keep the house going when they do. It suits you if you already own a portable generator, if a permanent standby unit is hard to fit on your lot, or if you only need the basics for a day or two.
What it usually carries in an Ann Arbor home
The furnace blower on a gas furnace, which keeps the heat on in a winter outage.
The sump pump in a basement on low or wet ground.
The fridge, the freezer and a few lights.
The router and a desk for anyone who works from home.
Older panels, historic houses and interlock fit
Interlock kits are listed for specific panel makes and models. A lot of Ann Arbor housing is decades old, and some older panels have no listed kit at all. Others are full, with no room for a two-pole generator breaker in the slots the kit needs.
What we do when the panel is a problem
Move circuits to open the right slots, when the panel is sound.
Use a manual switch instead. Our page on transfer switch installation in Ann Arbor explains that option.
Replace the panel when it is worn out or unsafe. Our Ann Arbor electricians handle panel upgrades.
Houses in the Old West Side
The Old West Side is a 19th-century neighborhood listed on the National Register and protected by city ordinances. If your house is there, ask the city whether an inlet box on a wall facing the street needs review. A side or rear wall near the panel is often the simpler spot anyway.
Where the inlet box and generator go on an Ann Arbor lot
The inlet box decides where the generator will sit every time the power goes out. We pick that spot with you before we drill anything.
Hills and slopes
The city climbs from about 750 to more than 1,000 feet, and yards get steep near the Huron River. A portable needs level ground that stays dry in a storm. We look for a flat spot near the house that does not collect runoff, then place the inlet so the cord reaches it.
Close neighbors
Many city lots have narrow side yards. A portable generator makes carbon monoxide, so it has to sit outside, away from windows, doors and vents. That means your neighbor's windows too, not just yours. Never run it in the garage, even with the door open.
Alarms inside
Put battery-powered or battery-backup CO alarms on every level of the house. Test them before storm season.
Permits in Ann Arbor, Pittsfield and Scio
An interlock changes your main panel, so plan on an electrical permit and an inspection. Which office handles it depends on your address.
City of Ann Arbor: the Building Department in the Build, Rent, Inspect unit at 301 E. Huron St. Permits go through the city's STREAM online system.
Pittsfield Township and Scio Township: each has its own building office. Call yours and confirm the current process.
Confirm current requirements for your address before work starts. Our generator permit guide lists the questions to ask.
How the job goes
Free quote visit: panel brand, open slots, outside wall and your generator's outlet.
A detailed written estimate in advance.
Permit filed with the right office.
Interlock, breaker and inlet installed and wired.
Inspection, then a practice run of the switching steps with you.
Cost, inlet size and when standby makes more sense
The price depends on whether a listed kit fits your panel, how far the inlet sits from the panel, whether you need a 30 amp or 50 amp inlet and cord, and the permit fees where you live. Panel work, if the visit shows you need it, adds to that. The generator cost guide explains each factor.
Match the inlet to the largest 240-volt outlet on your generator. Generators with only 120-volt outlets are not a good fit for a panel hookup. The regional interlock kit installation page has a table of common setups.
When to price a standby unit too
A portable needs someone home to roll it out, fuel it and start it, sometimes on an icy hill. If the house is often empty, or someone depends on medical equipment, look at Generac standby installation in Ann Arbor. When you are ready, use the Ann Arbor quote request form or our main contact page.
Related pages
Standby units, transfer switches, service and repair
A side-by-side comparison
Frequently Asked Questions
Usually, yes, because the work changes your main panel. Inside the city, permits are filed in the STREAM system, and Pittsfield and Scio townships run their own offices. Confirm current requirements for your address before work starts.
Ask the city first, because the Old West Side is protected by city ordinances. In most cases a side or rear wall near the panel works just as well and keeps the cord run short.
Only if a listed kit exists for that panel's make and model and the right slots can be freed. If not, a manual transfer switch or a new panel is the safe answer. We check this at the free quote visit.
Outside, on level ground that stays dry, and away from windows, doors and vents on your house and the neighbor's. Never in the garage. We place the inlet so the generator can sit in that spot and the cord still reaches.
Yes. We serve Ann Arbor and the townships around it from our shop in Belleville. Call (734) 697-8477 or send the form for a free written quote.