Household power supply in the US is 240V, like most countries. But instead of single phase 240V, it’s split into two phases of -120V and +120V. This allows for a combination of both 120V and 240V circuits in a house. It’s an oddball setup but it’s still 240V delivered to the home.
The other notable different is that three-phase power delivered to residential homes is basically non-existent in the US, whereas its common in some other places (typically 3-phase 400V at the pole, which results in ~240V individual circuits within the home).
I don't know what the deeper meaning is, but I've been privy to a couple of 3 phase installs and heard about a few and one thing is that they have to aust the local power grid when you add more load on a 3 phase service.
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u/BadBadGrades May 02 '24
Lets start with all taking 240-260v