20 Mar
2011
20 Mar
'11
2:57 a.m.
Philip Belben wrote:
ISTR seeing 277V somewhere as well. This would be
160V phase to earth
- I have no idea what, if anything, uses that!
I suppose there could be such a thing, but here in the US, when people
talk about 277V it is usually phase-to-neutral, with 480V
phase-to-phase. This is common in industrial use, both for heavy
equipment and 277V lighting (fluorescent, sodium, or metal halide).
Eric