Three phase and IBM
eric at brouhaha.com
Sun Mar 20 04:57:45 CDT 2011
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).
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