Voltage Ratings: 110/115/120, 220/230/240 or 440/460/480

J

jim dungar

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Location
Wisconsin
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PE (Retired) - Power Systems
infinity said:
For Wye systems the letter Y is included in the descriptor which I believe is an IEEE standard such as 208Y/120 or 480Y/277. It's also directly from the NEC, a few examples:
Click to expand...
Most utilities do not follow this standard nomenclature. But those of us that depend on the NEC should.
 
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