The single most common mistake with home charging is treating it like installing an outlet. A Level 2 charger is a continuous load, which means the circuit has to be sized at 125 percent of the charger's draw. A 48-amp Wall Connector needs a 60-amp circuit that will run at near full load for hours at a time — nothing else on the panel behaves like that.
Whether your service can carry it comes down to a load calculation, not a guess. We add up the general lighting and receptacle load, the HVAC, the water heater, the range and dryer, the pool equipment if there is any, and then see what headroom is left against your service size. A 200-amp panel in a Plano home with a heat pump and a pool can be closer to its limit than a 150-amp panel in a smaller Richardson house with gas appliances.
When there is headroom, the install is straightforward: a dedicated circuit run in conduit or cable depending on the route, a disconnect where the code and the manufacturer want it, and the unit mounted so the cable reaches the charge port without being stretched across the garage floor. Hardwiring is generally the better choice over a NEMA 14-50 receptacle for anything above 40 amps, both for heat and for longevity.
When there isn't headroom, the honest options are a service upgrade or a load management device that lets the charger share capacity with a large existing load. Both are legitimate. What is not legitimate is landing a 60-amp circuit on a panel that can't support it and hoping the diversity of use covers the difference.
One more thing worth knowing: the install is permitted and inspected work in every city we serve. An unpermitted charger circuit is a problem when you sell the house, and it's a much bigger problem if there's ever a claim.