My house’s breaker box is actually a sub panel supplied from my daughters house 30 feet away. In their cellar, there’s a 125A 240v breaker. We don’t draw anywhere near that much power. Most of the time we draw we draw under a kilowatt. I have an energy monitor to work out our share of the monthly bill. As I write this, our house is pretty quiet, drawing 338w. The fridge is running at 130w.
If I multiply volts x amps, 120x125 is 15,000 watts. So if I wanted to supply my house with a generator at that 125A. Would I need a 15K generator or twice that. Put another way, do I use the amperage on the breaker or multiply by two legs?
I’m sure this has been explained to me many times and for some reason it refuses to stick. I remember all sorts of useless stuff but not this. Maybe I should write it down someplace..
Sheepishly,
Roger