What EV charging station replacement involves

An EV charger is a big continuous load on a panel that was never asked for one. The work starts with finding out what is actually there. With EV charging station replacement, that means looking at the existing wiring, the panel capacity and whatever the last person left behind.

It starts with a look at the panel and the circuits involved. From there we tell you what has to be done, what can wait and what was never a problem at all.

Where this comes up

Level 2 at home, DC fast and fleet charging for business and municipal sites. Most of these calls come from Des Plaines and the surrounding suburbs, but we take them anywhere in our service area.

Older buildings in this part of Illinois were wired to a different standard. Aluminum branch circuits, knob-and-tube in the walls, panels that were full the day they were installed. Those turn up constantly and they change the job.

How we do it

We show up when we said we would and explain the work before we start. Permits get pulled where they are required, and the job is not finished until it passes inspection.

Why it usually cannot wait

Electrical problems do not stay the same size. A loose connection heats up, the heat oxidizes the metal, the oxidized metal raises the resistance, and the resistance makes more heat. That loop runs in one direction only and it ends at a scorched box.

If something is tripping, buzzing, warm to the touch or smells like hot plastic, that is the system telling you where the problem is while it is still cheap to fix.

How we quote it

Phone quotes in this trade usually come in low and climb once someone opens the wall. We would rather spend the time up front, find what is behind the drywall and give you one number that holds.

A quote from us is a written list of the work and the price for it. Nothing gets added quietly. If something behind a wall changes the job, you see it and decide before we go on.

Code, permits and inspection

Most permitted jobs have two inspections. The rough-in is checked with the walls open, before insulation and drywall. The final happens once devices are in and the power is on. Missing the rough-in means opening finished walls later, so we schedule around it from the start.

We deal with whichever jurisdiction the job sits in. We pull the permit, we schedule the inspection, and we are there when the inspector walks it. You get the paperwork at the end, which matters when you sell the building or when an insurer asks.

Materials and why they matter

Devices are not all the same. A fifty-cent backstabbed outlet holds the conductor with a spring clip; a commercial-grade one clamps it under a screw plate. The second kind is a couple of dollars more and it is the reason the connection is still tight in fifteen years.

We use commercial-grade devices as standard. It is a small share of the job cost and it is the part most likely to fail if you go cheap on it.

What to do before we arrive

Leave the panel cover on. Flipping a breaker is fine. Taking the dead front off to look inside is not, because the service conductors at the top stay live even with the main off. We will open it when we get there.

Clear a path to the panel and the problem area. Then jot down anything that seems to set it off, like a certain appliance or time of day.

Load calculation comes first

An EV charger is a continuous load, which means the code requires the circuit to be sized at 125 percent of its rating. A 48-amp charger therefore needs a 60-amp circuit, and that has to fit inside what the service can already carry alongside the furnace, range, dryer and air conditioning.

We run the calculation before anything gets ordered. Sometimes the answer is that the panel takes it as-is, sometimes it needs a load management device, and sometimes the service genuinely needs upgrading first. You get the real answer rather than the convenient one.