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https://en.wikipedia.org/wiki/Transformer_oil https://en.wikipedia.org/wiki/Transformer_oil c'mon really? you didn't even look? What is this? You're "intereste

• PhantomGremlin 9y ago
  most household uses ... they want single-phase power!? In 1910, maybe. Huh? In the USA all residential is single-phase. Although there's a center tapped transformer involved, which is what gets you both 120 V and 240 V from one phase. This arrangement is called "split-phase": https://en.wikipedia.org/wiki/Split-phase_electric_power#North_America https://en.wikipedia.org/wiki/Split-phase_electric_power#Nor... Name one "household use" in the USA (which is where the author lives) that doesn't use single-phase power? I'll give you a head start, I once lived in an apartment building that used 120V/208V for electric hot water heaters. But offhand I can't think of anything else.
  • M_Bakhtiari 9y ago
    It is strange though, that residential three phase is so uncommon there, especially when the single phase voltage is only 110, further sacrificing efficiency for high power applications.
    • ars 9y ago
      High power applications use both sides of the split phase, for 240v.
  • rothrock 9y ago
    My apologies. I conflated split-phase with 2 phase.