I have 150A service feeding a panel on the outside of the house. The house is all-electric. I have TWO EV's. This panel now has 3 breakers besides the main.
- A 100A feeds the secondary on an ATS common to a 100A sub-panel with everything on it. (on)
- A 50A secondary to an ATS that feeds a charging pedestal in the driveway. (off)
- A 40A secondary to an ATS that feeds the range. (on)
- Only two actual people. One who can't do enough laundry to satisfy her needs.
- A demand limiter: I put an EV switch . . . On the HWH and Dryer, with the Dryer priority. (30A breaker, ~18A actual).
- Micro Air on the 4T Goodman package unit.
I have only seen demand over 90A once, and only for a brief time, peaked just over 100A the car was charging, HWH, kitchen was busy, AC cut on, my software monitor cut the car charger out. My noise load is around 1000 to 1500W. Current mean is around 6000-6500W, it may go up another 500W in July/Aug, we shall see.
I routinely bang up to around 18KW from time to time, generally charging and cooking and cleaning on a weekend. I have 2x12KW inverter output (sig). I split my power out with the ATS to a sub-panel about a year before I put in the solar. I bought a monitor and started recording my use as I moved circuits one at a time to the new sub-panel. Adding the solar was a simple matter of attaching the AC bus from the inverter to the ATS once I confirmed peak demand. I think most people would be hard pressed to actually hit 100A. In a 1500sqft all electric.
Oven range is the least of your worries, it's kind of a joke, but can create some load fun if you turn everything on high all at once and start pre-heating the oven for a pizza or something. You just don't, but it could hit 7000 in some mythical world. It's mean usage is also very low you just don't have it on that much, even with a family.
Toaster Oven, Coffee pot, Microwave, dishwasher (heater), Blow Dryer, curlers, etc create a dynamic, of 500 - 1000 watts or so each, generally don't notice these much either.
HWH is annoying and un-relenting. I have a small 40gal. Always wants to be on with everything else, but does cycle, since I have it on the same circuit as the clothes dryer, I just figure that 18A in. This is something I would like to eliminate, but I'm not in a rush, it's never caused an issue.
Here the HVAC is also un-relenting starting about now. Peaks right at 5000W on those 115F days.
If I didn't have the EV's I'd never hit 100A unless I went out of my way. Add in a couple pool/well pumps or something, you might brush a bit higher.