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by ars 1556 days ago
I think that's because most homes do not have sufficient electrical power to run everything at once.

For example: 50A for the heat pump, 50A to charge your car, 50A for the range, 30A for the dryer, 30A for the water heater = 210A (all my examples are for 240V) + various lights and other things. Homes in the US are most commonly wired for 100, 150, or 200A.

So they'll run the range at 30A instead, but that means you can't use all the burners at the same time at full power.

If we are actually going to fully electrify the home 200A or more service is going to have to become the starting point. Residential panels > 200A in the US are rare (from what I read most power companies won't even supply such service), and that might need to change.

1 comments

> I think that's because most homes do not have sufficient electrical power to run everything at once

Our (five-zone) induction hob uses all three phases, it's connected using a 5-core cable.

See previous discussion here https://news.ycombinator.com/item?id=20798298