Florida generator guide

Your Panel Says 200 Amps. The Generator Makes About 90. Does Half Your House Go Dark?

The transfer switch reads 200 amps, the generator itself puts out closer to 90, and now you're staring at those two numbers doing panic math. Breathe. Your panel's amp rating was never a measure of what your house actually uses — it's a ceiling nobody ever hits. The generator doesn't have to match it. Something else does, and it's already handled.

Get your address-specific installed price →

About five minutes. No salesman, no all-day window.

Your panel's big number was never your house's real appetite

The 200 on your panel is a ceiling. It's the most electricity your wiring is built to carry without cooking, and it has almost nothing to do with what your house pulls on a normal hot afternoon.

Think of it like the lanes on I-95. Eight lanes wide doesn't mean eight lanes of bumper-to-bumper traffic every second of the day. Most hours, the road is half empty. Your panel is the same — sized for one freak moment when everything could theoretically run at once, a moment that basically never arrives.

So the generator was never trying to fill all 200 amps. It's trying to cover what you actually use when the lights go out. Those are very different numbers, and the gap between them is not a problem — it's the whole point.

The part that has to match your panel isn't the generator

Here's where the fear comes from. You look at the transfer switch — the box that flips your house from the grid over to the generator — and it says 200 amps. Then you see the generator making something closer to 90. Half the number. Feels like half the house.

But the switch and the generator are answering two different questions. The transfer switch has to be rated to safely pass along whatever your full service could throw at it, so a 200-amp home gets a 200-amp switch. The generator only has to make enough power to run what's actually switched on. A common whole-home unit puts out around 90 amps at your wall voltage — and that carries a lot more house than 90 sounds like, because your house hardly ever asks for more than that at one time.

So how does a smaller number run the whole house?

Two things work together, and neither one needs you standing at the panel.

First, your house takes turns without you noticing. The generator's brain watches the load, and when the central air kicks on — the hungriest thing in any Florida house — a small module can hold back the electric dryer or the water heater for a few minutes so the AC gets its big gulp of startup power. It just juggles, quietly, the way a short-order cook runs one stove through a Sunday rush without letting anything burn.

Second, the AC itself can be taught to start gently. A soft-start device (SureStart is one) shrinks that ugly first-second surge when the compressor lurches to life — the surge that scares people into buying a far bigger generator than they need. Tame the surge, and a mid-size generator carries the exact same house.

Which is why "does it match my panel" is the wrong question. The real one is "what do I run when the power's out, and can this thing carry it?" For most Florida homes, the answer is yes, with room left over.

The only number that settles it is one built for your address

All of this turns on your specific house — your AC tonnage, whether your heat is electric or gas, a pool pump humming in the back, maybe an EV charging in the garage. A generator that's perfect for the place down the street could be too big or too small for yours. Rules of thumb get you into the neighborhood and then leave you guessing.

So skip the guessing. GENERasic takes your actual address and your actual loads and comes back with one committed installed price — the real number for your house, not a range you have to sit and decode. Put in your details and get your price.

Common questions

Do I need a 200-amp generator to back up a 200-amp panel?

No. The 200 amps is the most your wiring is allowed to carry, not what your home draws during an outage. A whole-home standby unit that puts out well under that runs most houses comfortably, because everything almost never runs at the same instant.

Then why does the transfer switch say 200 amps?

The transfer switch has to be rated for your full electrical service so it can safely pass along whatever the grid or the generator sends through it. That rating matches your panel. The generator's output is a separate spec and is normally a good bit lower — that's expected, not a mismatch.

Will my central air conditioner actually start on a smaller generator?

Usually yes. The compressor's startup surge is the real hurdle, and a soft-start device (SureStart is one common brand) cuts that surge down so a mid-size generator handles it. Load management can also pause other big appliances for the few seconds the AC needs to spin up.

Can it run the whole house, or just a few circuits?

Both setups exist. A whole-home approach uses load management to cover the entire panel and briefly shed a heavy appliance if too much wants to run at once. A smaller "essential circuits" approach backs up just the fridge, some lights, and the AC. Which one fits comes down to your loads and your budget.

What happens if too many big things turn on at the same time?

The load management sheds a low-priority load — say the dryer or water heater — for a few minutes, keeps the important stuff running, then brings the paused appliance back automatically. Most of the time you never notice it happen.

Stop reading ranges. Get your number.

GENERasic pulls the real property, flood, and elevation data for your exact address and returns one all-in installed price — sized to your home, your fuel, and your flood elevation. The vetted local installer confirms it on site.

Get your installed price →