Charging Two EVs at Home in Sarasota: What Multi-Car Families Need to Know | CoHarbor Electric

Had a family out in Ridgewood Park call us last spring — nice lot, two-car garage, and they’d just gone from one EV to two within a few months of each other. Wife’s Model Y, husband’s new Ford Lightning, both wanting Level 2 chargers before the truck even got delivered. Sounds simple. Two chargers, two spots on the garage wall, done in an afternoon, right?

Not quite. Their panel was already carrying a pool pump, a home generator transfer switch, and central AC sized for a house that size — which in Sarasota means it’s running most months of the year, not just July and August. Stack two 40-amp EV circuits on top of that, and we were suddenly having a very different conversation than “where do you want these mounted.”

This is the part of EV ownership nobody thinks about until they’re standing in the garage with two cars and one panel between them. Charging a single EV at home is pretty well understood by now. Charging two off the same service is where things get more interesting, and where a lot of Sarasota homeowners get caught off guard.

One Charger Plan Doesn’t Automatically Double for Two Cars

Here’s the assumption people make, reasonably enough: if a 40-amp charger works for one car, two 40-amp chargers should work for two, just twice the circuit. Sometimes that holds up. A lot of the time in Sarasota, it doesn’t — because your panel isn’t just supporting the chargers, it’s supporting the chargers plus everything else already pulling from it at the same time.

We run a full load calculation before quoting anything, following NEC Article 220 for the whole-house math and Article 625 for the EV charging equipment specifically. Two EVs charging simultaneously at 40 amps each is 80 amps of continuous load, and NEC requires continuous loads to be sized at 125% — so you’re really planning for the equivalent of 100 amps just for the cars. On a 200-amp service already carrying a pool pump and two AC systems, that math doesn’t always leave enough room, especially in a Ridgewood Park or Kensington Park-style home with a bit more square footage and equipment attached to it.

The Mistake We See Most Often

Homeowners — and sometimes installers who skip the full calculation — treat each charger as its own isolated project. First charger goes in fine. A year later, the second EV shows up, second charger gets added without anyone circling back to check whether the panel can actually carry both at once. That’s how nuisance tripping starts, or worse, how an inspector catches an overloaded panel during an unrelated permit and stops the job cold until it’s corrected.

Simultaneous vs. Staggered Charging Changes Everything

Not every two-EV household actually needs both cars charging at the same time, and this is usually where real money gets saved. If both cars come home around six and both need a full charge by morning, you probably do want two full-capacity circuits. But plenty of two-car families don’t charge that way — one car plugs in during the day off a work-from-home schedule, the other overnight. In that case, load management handles most of the problem without touching the panel at all.

Load-Sharing Chargers Are Worth Real Consideration

There are Level 2 chargers built specifically for this — smart units that communicate with each other and split available amperage dynamically between two vehicles, so you’re never pulling more than the circuit’s rated for even if both cars happen to plug in at once. We’ve installed more of these across Sarasota over the past year, particularly for homes where a panel upgrade isn’t in the budget or isn’t practical given where the panel sits relative to the garage. It’s not the cheapest charger option available, but for a lot of two-EV households, it’s cheaper than a panel upgrade and it actually solves the problem instead of just relocating it.

When the Panel Upgrade Conversation Is Genuinely Unavoidable

Sometimes there’s no way around it. Older Sarasota homes still running on 100 or 150-amp service just don’t have the headroom for two dedicated EV circuits, no matter how clever the load management gets. If that describes your situation, a panel upgrade to 200 amps — sometimes 400, depending on everything else in the house — tends to be the honest answer, not the upsell answer. We’ll always show you the math before recommending it. Nobody should take our word for it that an upgrade’s needed without seeing the load calculation themselves.

Permitting Gets More Involved With Two Circuits

Sarasota County permitting for a single EV circuit is usually straightforward. Add a second dedicated circuit, especially paired with any panel work, and the review tends to look more closely at the whole-house load calculation rather than just the circuit in isolation. We handle that submission either way, but it’s worth knowing a two-charger install isn’t always the rubber-stamp process a single charger often is.

What We Actually Check Before Quoting a Two-EV Home

When we get a call like the one from Ridgewood Park, here’s roughly what we’re checking before chargers even enter the conversation:

• Current panel size and how much spare capacity actually exists, not just what’s on the label
• Everything else pulling continuous or heavy cyclical load — pool equipment, generators, AC systems, tankless water heaters
• Whether both cars realistically need to charge at the same time or on a stagger
• Distance from panel to garage, since two circuits means two runs, and Sarasota’s larger lots can mean longer conduit distances than a standard suburban footprint
• Whether a load-sharing charger solves it, or whether a genuine service upgrade is the real answer

That Ridgewood Park family ended up going with a paired load-management charger setup instead of a panel upgrade, once we walked through their actual charging habits — turned out the Lightning mostly charged overnight for job-site trips the next morning, while the Model Y charged during the day. Simultaneous peak draw was never really the issue everyone assumed it’d be.

Ready to Add a Second EV to Your Sarasota Home?

If your household’s about to go from one electric vehicle to two — or you’re already there and dealing with tripped breakers, slow charging, or just an uneasy feeling about what your panel’s actually handling — it’s worth getting an actual load calculation done before buying anything else. Coharbor Electric is a licensed and insured electrical contractor serving Sarasota homeowners from Ridgewood Park to Kensington Park and beyond, and we handle the full picture: load calculations, charger selection, load-management setups when they make sense, panel upgrades when they’re genuinely needed, and all the Sarasota County permitting that comes with it. Give us a call and we’ll tell you honestly what your panel can carry — before you’re standing in the garage with two cars and one circuit that can’t keep up.