US power mains are designed to be either phase to phase or phase to neutral. Phase to phase (hot to hot) gets you full voltage when phases are 180 degrees opposed. Phase to neutral is an automatic step down by 1/2 in just about all circumstances.
In 3 phase where phases are 120 degrees out of phase; phase-to-phase is the phase to neutral voltage (1/2) times the square root of 3.
This explanation is slightly oversimplified but is basically accurate.
Mark Fay MMC Jr. Engineer
QMED AS-E / MSC ET
If you look all that gook up it means I have US Merchant Marine
Credentials for Jr. Engineer
, Qualified Member
of the Engineering Department, Able Seafarer Engineering. I work for US Military Sealift Command as an Electronics
Technician at sea. I normally keep this to myself but I'm talking about things here that demand I show some level of competence. And yes I do have a degree in electrical
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