Panel Upgrades · Farragut, TN

Farragut’s 100-amp houses have outgrown their panels

A load calculation, a permitted service change, and a utility window we actually hold. Volt Pro Services does panel work west of Knoxville the way an inspector wants to see it.

Call (865) 256-0876 → Request a quote →

Why so much of this town is due at once

Farragut filled in fast. Subdivisions off Kingston Pike, Concord, and Village Green went up through the eighties, nineties, and early 2000s, and most of them were wired for the loads of that decade.

A 1988 floor plan got a gas furnace, a range, a dryer, and lights. One hundred amps covered that with room left over. Then the same house picked up a heat pump, a second refrigerator in the garage, a finished basement with its own circuits, a spa off the deck, and a car that needs charging overnight. Nothing about the panel changed. Everything plugged into it did.

So the tells show up. The panel has no open slots and somebody has doubled up tandem breakers to buy space. Lights dim when the compressor starts on an August afternoon. A breaker warms up under a long charging session. None of those are emergencies on their own. Together they say the service is undersized for how the house is actually being used, and that is a panel conversation, not a breaker conversation.

The other bucket is age of equipment rather than size. Farragut’s older stock and the surrounding Knox County builds still hide Federal Pacific Stab-Lok and Zinsco panels behind clean covers. Those have a documented history of breakers that do not trip when they should. Swapping breakers into that enclosure does not fix it. The panel gets replaced, and we say that plainly rather than selling around it.

Summers here settle the argument for a lot of homeowners. Humidity holds, the heat pump runs long cycles, and the whole neighborhood pulls at the same time. A service that was comfortable in 1995 spends July at the edge of what it was built to do. Adding a charger or a hot tub on top of that is where an undersized panel stops being a nuisance and starts being a hazard.

Storm season is the second half of it. East Tennessee gets real lightning, and the surge that comes down a service drop finds the panel first. When the panel is open anyway, whole-home surge protection at the service goes in for a fraction of what it costs to add later. So does correcting the grounding electrode system, which on a lot of houses this age was fine at the time and is not what the current code asks for.

If you are working through several projects at once, start on the Farragut service page for the full list, and read the EV charger page if charging is what pushed you into this. Charger and panel are usually one conversation, and doing them together saves a permit and a power-off day.

The load calc is the whole answer

Before anyone quotes a number, the math has to say what the house needs. NEC Article 220 sets the method, and Tennessee inspectors expect to see it on a service change.

It is not guesswork and it is not a sales tool. It adds up what is there, applies the demand factors, and returns a minimum service size. Tell us what you plan to add in the next few years and it goes in the math too, because sizing for today and coming back in three years is the expensive way to do this.

Most Farragut houses land at 200 amps. Some, with a spa plus two chargers plus a fully conditioned basement, land higher. You will see which one you are before you decide anything.

General lighting and receptaclesCalculated from conditioned square footage, not from counting outlets. A finished basement changes this number.
Fixed appliancesRange, oven, dryer, water heater, disposal, and anything else hard-wired or on its own circuit.
Heating and coolingThe larger of heat or cool, plus strip heat on a heat pump. This is the single biggest line on most Farragut homes.
EV chargingA Level 2 charger is a continuous load and gets sized at 125 percent. It moves the total more than people expect.
Spas, pools, and shop equipmentHot tubs near the lake and welders in the garage both count, whether or not they are installed yet.
Existing service conditionMast, meter base, service entrance conductors, and grounding get inspected at the same visit and priced in the same scope.

What the day looks like

Walkthrough and numbers

We look at the panel, the meter, the mast, and the grounding, run the calculation, and write a scope that names the amperage and everything else being replaced.

Permit and utility window

Volt Pro Services pulls the electrical permit and books the disconnect and reconnect with the utility serving your street. You get the date before we order anything.

Old service out

Power comes down, the old panel and any failing meter base or mast come off, and we document what was behind the cover before the new gear goes up.

New service in

New panel set, grounding electrode and bonding brought to current code, surge protection at the service if you want it, and every circuit labeled as it lands.

Inspection and power back

The electrical inspector signs off, the utility re-energizes, and we check voltage and balance across both legs before anyone packs up.

Directory and warranty

You get a legible panel directory, the written warranty, and a walk of the work with the licensed electrician who did it. Then we settle up.

One clarification homeowners appreciate: a service change is a same-day job with a scheduled power-off, not a multi-day project living in your driveway. If something about your house makes that unrealistic, a relocation, a buried service, an access problem, you hear it at the walkthrough. Finished panel work is in the gallery, and the fastest way to get on the calendar is to send the details through the contact form.

Straight answers

The questions we get most often on Farragut service changes, answered the way we would answer them standing in your garage.

How do I know my Farragut house needs a bigger service?

The usual tells are a full panel with no open slots, tandem breakers doubled up everywhere, lights that dim when the AC kicks on, and a main breaker labeled 100 amps on a house that has since picked up a heat pump, a spa, or a charger. The load calculation settles it either way.

What does a load calculation actually determine?

It adds up the square footage, the fixed appliances, the HVAC equipment, and anything you plan to add, then applies the NEC 220 demand factors. The result is the minimum service size your Farragut home legally needs. It is also what tells us whether 200 amps covers your plans or whether you should go larger while the service is already open.

Do you handle the permit and the utility?

Yes. Volt Pro Services pulls the electrical permit, books the inspection, and schedules the disconnect and reconnect with the utility serving your street. A service change done without a permit is a problem at resale and with your insurer, so we do not skip it.

How long will my power be off?

Plan on most of a working day. We book the utility window in advance and we do not start a Farragut service change we cannot finish and re-energize the same day. If anything about your house complicates that, you hear it before we schedule.

My panel is a Federal Pacific. Can you just replace the breakers?

No. Federal Pacific Stab-Lok and Zinsco equipment has a documented record of breakers that fail to trip under fault. New breakers in that enclosure do not fix the problem. Those panels get replaced outright, and there are still plenty of them in Knox County housing.

Will 200 amps cover an EV charger and a heat pump?

On most Farragut houses, yes, and that is the common combination we size for. Add a spa, a finished basement, and a second charger and the calculation may push you higher. Tell us everything on the list at the walkthrough, including the things you are only thinking about.

Does the upgrade include the meter base and mast?

When their condition calls for it. On a subdivision home with an overhead drop and original weatherhead, replacing the panel and leaving a corroded mast and undersized service entrance cable in place is half a job. We write the whole service entrance into the scope so the inspection passes the first time.

Can you move the panel while you are at it?

Often yes. Panels boxed in by finished basement walls, shelving, or closet build-outs may not have the working clearance the code requires. A service change is the right moment to relocate one, or to move it outside as a meter main combination. We flag any clearance issue at the walkthrough so it is in the price.

Is the work licensed, insured, and warrantied?

Yes on all three. Volt Pro Services is a licensed Tennessee electrical contractor and carries full insurance. The licensed electrician who pulls the permit is on the Farragut job, and the warranty is written down before you pay anything.

Get the real number for your panel

Call and we will come out to Farragut, run the calculation, look at the meter and mast, and put the scope in writing. No deposit to get that far. You can also request a quote here and we will schedule service around your week.