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this post was submitted on 30 Sep 2024
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Electric Vehicles
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What are you talking about? 200A is a HUGE panel as it is. You're going to have a hard time getting bigger than that on a residential connection. If you go balls to the wall with the big stuff in your house, you'd be looking at about 30 amps for AC, 50 for stove and oven (by the way, that's all burners and oven running at the same time. Happy Thanksgiving?), 30 for a clothes dryer, and you still have 90 amps at 240 volts remaining.
Oh, and realistically that's two 90-amp sets of 120 volts. And really, most people charge their car at night, when demand and rates are lower. Maybe your AC is going to run occasionally, but you're probably not making that Thanksgiving feast while laundry is going
You forgot the furnace and water heater. If those are electric, it can easily max out a 200 amp panel.
Also, the fact that you'll never use the full 50 amps on the range isn't really important. There are calculations on how much you can overbook your panel. Once you hit that limit, electricians and code won't allow it.
Admittedly I use gas for both those things, so yes, I did forget about them. The point largely remains: it's highly unlikely that you'll have all loads going at full blast, and for that reason the load calculation is far more complex than simply adding up the breakers. It also understands that circuits are generally only partially used, and that the worst case scenario is a nuisance, not a hazard.