5 ms·
> The US grid (the last-mile bits anyway) isn't 110 volts, it's 220. It's just our houses that are wired for (mostly) 110 V. Similarly, in most of continental
by AnssiH 5y ago
> The US grid (the last-mile bits anyway) isn't 110 volts, it's 220. It's just our houses that are wired for (mostly) 110 V.
Similarly, in most of continental Europe phase-to-phase is 400V but most outlets are 230V. E.g. in my apartment only the stove has a 400V three-phase (4-wire) connection.
- xxs 5y agobut 3phase (120degrees) is a lot better for powering motors than the 2 phase one in the US
- jessaustin 5y ago3-phase is available in USA, but it's typically not provided to residences.
- xxs 5y agoof course, the heavy motors/industrial equipment loves 3 phase AC. Higher voltages allow lower losses in the conductors, hence less copper needed everywhere incl. small motors as the current us lower through and through.