Home Generator Installation Guide for Fort Myers | CoHarbor Electric

We had a homeowner out near Tice call us a few months back, dead set on installing his own portable generator setup the way his brother-in-law did it up in Ohio — a couple of extension cords run through a cracked window, straight into the house. We had to stop that conversation pretty quick. What works, sort of, in a place that loses power twice a decade doesn’t hold up here, where Fort Myers homeowners are looking at real hurricane seasons and FPL crews working overtime after every big storm. Backfeeding power into your house that way isn’t just against code. It can kill a lineworker trying to restore power on your street, thinking the line’s dead when it isn’t.

So let’s actually walk through how a generator installation is supposed to go here, start to finish, because there’s more to it than picking a unit off a shelf and hoping for the best.

Step One: Figure Out What You’re Actually Trying to Power

Before anything else, we sit down and go through what has to stay running versus what’s nice to have. That’s a different conversation for every house. Some homeowners in Fort Myers just want the fridge, some lights, and a window AC unit running. Others want the whole house — central air, the well pump if they’re not on municipal water, medical equipment, the works. That answer determines everything downstream: whether you need a portable unit or a whole-home standby system, and if it’s the latter, what size.

This is also where we point out something people don’t always think about upfront — central air conditioning is the single biggest power draw in most homes, and it’s usually the reason someone who planned on a smaller setup ends up needing something bigger. A portable generator can run a window unit fine. It generally can’t handle the startup surge of a full central AC compressor.

Portable Setups: The Right Way to Do It

If you’re going the portable route, the installation itself is smaller in scope but not something to skip. A licensed electrician installs either a manual transfer switch or an interlock kit at your panel, which lets you safely switch your home’s circuits over to generator power without any risk of backfeeding into the grid. That’s the whole point of this step — it isolates your house from FPL’s lines so power only flows one direction.

We typically wire a transfer switch to cover a handful of priority circuits — refrigerator, some lighting, maybe a sump pump if your property’s low-lying — rather than the whole panel, since portable units don’t have the output for everything at once. Takes a day or so for most homes, panel access depending.

Where People Cut Corners

The mistake we see most in Fort Myers, honestly, is the extension-cord-through-a-window setup that homeowner near Tice almost tried. It’s dangerous, it’s illegal, and it voids most insurance policies if something goes wrong. If you own a portable generator, get the transfer switch or interlock installed. It’s a modest job and it’s the difference between doing this safely and not.

Whole-Home Standby: What’s Actually Involved

A whole-home standby generator is a bigger project, and it’s worth understanding the pieces before you commit.

The unit itself sits outside on a concrete pad, usually running on natural gas or propane depending on what’s available at your property. It’s wired into your panel through an automatic transfer switch — the component that senses a utility outage and switches your home over within seconds, no manual startup required. That transfer switch is also what keeps your system properly isolated from FPL’s grid, which matters for the exact same safety reason as the portable setup, just handled automatically instead of by hand.

Sizing Isn’t a Guess

We calculate generator size based on square footage, your AC load specifically, and what you actually want covered — not based on what a neighbor over in San Carlos Park bought or a number pulled off a generic online chart. Undersizing a whole-home system is a common and expensive mistake; the generator either can’t start your AC compressor at all, or it runs constantly under strain trying to cover more than it’s rated for.

The Panel Comes First

Before a standby system makes sense, we check whether your existing panel can actually support the transfer switch integration. Homes with older or already-maxed-out panels sometimes need an upgrade before the generator work makes sense at all. Doing both in the same project, when it’s needed, tends to be more efficient than tackling the generator now and running into panel limitations six months later.

Permitting and Code — This Isn’t Optional

Generator installations in Lee County require permitting, and for good reason. The wiring has to meet NEC Article 702, which governs standby power systems and covers exactly how the transfer switch and connections need to be done to keep your home’s system safely isolated from the grid. Skipping the permit might save you a little time upfront, but it creates real problems down the line — insurance claims, home sales, and safety inspections all tend to ask for documentation that a shortcut install won’t have.

We handle the permitting as part of the install, so it’s one less thing you’re chasing down separately.

Fuel Line and Gas Work

If you’re going with a natural gas or propane whole-home unit, there’s a fuel line component to the install as well — running the line to the unit, sizing it correctly for the generator’s demand, and making sure it’s installed to code. This part of the job often gets coordinated alongside the electrical work rather than treated as a totally separate trade, since the timing usually lines up better that way.

What a Realistic Timeline Looks Like

Portable transfer switch or interlock installs are usually a single day. Whole-home standby systems take longer — the pad, the unit delivery, the electrical and gas work, and the permitting inspection all add time, and we’d rather give homeowners near Dunbar or Page Park a realistic multi-week estimate than a number that sounds good on the phone and falls apart once the project actually starts. Storm season tends to push demand up and availability down, so starting the process in the calmer months usually means better equipment access and more predictable scheduling.

Ready to Get Your Fort Myers Generator Installed Right?

Whether you’re looking at a simple transfer switch for a portable unit or a full whole-home standby system, Coharbor Electric is a licensed and insured electrical contractor serving Fort Myers homeowners from Dunbar and Page Park to San Carlos Park and beyond. We’ll walk your property, look at what your panel can support, and build an installation plan around what your home actually needs — not a generic package. Reach out and let’s get your generator installed the right way, permitted and code-compliant, before the next storm season puts it to the test.