Skip to content GENERATOR INTERLOCK INSTALLATION IN CONNECTICUT
Power Your Home Safely from a Portable Generator.
Already own a portable generator? A generator inlet and interlock let you power your furnace, well pump, refrigerator, and lights through your electrical panel during an outage, with no extension cords running through windows. Limitless Electric installs complete interlock setups with permits and inspections handled for you.
- 2-Hour Appointment Windows
- Transparent Pricing
- No Salespeople
How a Generator Interlock Works
A generator interlock is a sliding plate installed on your electrical panel. It physically prevents your main breaker and your generator breaker from being on at the same time.
That matters because sending generator power into your home while it’s still connected to the utility lines, called backfeeding, can damage equipment and seriously injure utility workers repairing the lines. The interlock makes that impossible.
We also install a weatherproof power inlet on the outside of your home. During an outage, you plug your generator into the inlet with a properly rated cord, switch the interlock, and choose which circuits to run.
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What’s Included in a Generator Interlock Installation
- Interlock kit listed for your specific panel
- Dedicated generator breaker sized to your generator
- Outdoor power inlet box, placed where your generator can run safely away from doors and windows
- Wiring between the inlet and your panel
- Permit and inspection
- A hands-on walkthrough of the startup and shutdown steps, with circuit labels so you know what you’re powering
Don’t have a generator yet? We can help you figure out what size you need for the circuits you want to run. Prefer power that comes on automatically? See our standby generator installation.
Is an Interlock Right for Your Home?
An interlock is a great fit if:
- You already own a portable generator, or plan to buy one
- You want to keep the heat, well pump, sump pump, and refrigerator running during outages
- You’re tired of running extension cords through doors and windows
- You want backup power at a lower cost than a standby generator
- You’re comfortable starting the generator and switching over manually when the power goes out
If you’d rather have backup power that starts automatically, a standby generator may be a better fit. We’ll explain both options.
How Much Does a Generator Interlock Cost?
A generator interlock is usually the most affordable way to connect backup power to your home. Pricing depends on your panel type, where the inlet goes, the distance between the panel and the inlet, and your generator’s size.
Some older panels don’t have an interlock kit available. In that case, we’ll explain alternatives, such as a manual transfer switch or a panel replacement.
You’ll get upfront pricing before any work begins, and financing through Wisetack is available on every quote. Learn about financing.
How Interlock Installation Works
1. Evaluate Your Panel & Generator
We confirm an interlock kit is available for your panel and match the breaker and inlet to your generator’s output.
2. Plan the Inlet Location
We choose a spot where your generator can run outdoors, away from doors, windows, and vents.
3. Upfront Pricing & Permit
You approve the price, and we pull the electrical permit.
4. Installation
We install the interlock, breaker, inlet, and wiring, usually during a single visit.
5. Walkthrough & Inspection
We show you exactly how to switch over during an outage and back again when power returns, then complete the inspection.
Why Homeowners Choose Limitless Electric
- Safety first. Listed interlock kits, correctly sized breakers, and a clear walkthrough so you’re confident during an outage.
- Licensed in Connecticut and Massachusetts. CT License ELC.0206906-E1 and MA License 23117-A.
- Local and family-owned, based in Windsor Locks since 2021.
- Upfront pricing, no salespeople.
- Both options under one roof: portable generator interlocks and Kohler standby generators.
- Financing on every quote through Wisetack.
Be Ready Before the Next Outage
Storm season doesn’t give much notice. Get your generator interlock installed now so you can power your home safely the next time the lights go out.
Frequently Asked Generator Interlock Questions
What is a generator interlock?
It’s a device installed on your electrical panel that prevents the main breaker and the generator breaker from being on at the same time. That lets you safely power your home’s circuits from a portable generator through an outdoor inlet.
Is a generator interlock safe and legal?
Yes, when it’s a kit listed for your panel and installed by a licensed electrician with a permit. It prevents backfeeding, which protects your equipment and the utility workers repairing the lines.
Can I just plug my generator into a dryer outlet?
No. Using a “suicide cord” to backfeed through an outlet is dangerous and illegal. It can energize the utility lines and seriously injure lineworkers, and the exposed prongs can shock you. An interlock and inlet are the safe way to do it.
What can I power with a portable generator?
That depends on your generator’s wattage. Most homeowners prioritize the furnace or boiler, well pump, sump pump, refrigerator, and some lights and outlets. We’ll help you plan which circuits to run and label them for you.
Interlock or transfer switch: which is better?
Both are safe when installed correctly. An interlock is usually the more affordable option and lets you use any circuit in your panel. A manual transfer switch powers a pre-selected set of circuits. We’ll recommend what fits your panel and budget.
Does my panel need to be replaced for an interlock?
Not usually. Interlock kits are available for most panels. If yours is too old or no kit exists for it, we’ll explain the alternatives.
Where should the generator sit while it runs?
Always outdoors, well away from doors, windows, and vents, because generators produce deadly carbon monoxide. We place the inlet so you can follow that rule easily.
How long does installation take?
Most interlock installations are completed during a single visit, including the inlet, breaker, and wiring.
Is financing available?
Yes. Every Limitless Electric quote includes the option to pay over time through Wisetack. Checking your options takes about a minute and does not affect your credit score.
Areas We Serve
These are our primary service areas. We serve throughout Hartford County, Tolland County, and many surrounding communities; contact us to confirm availability.