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Interesting Power Quality Document


RF Dude

Jan 1, 1970
I was Googling and found a Power Quality document that you all might find
interesting reading. It is written in plain language and has many
diagrams. It is a bit dated and relates to Ontario, but the concepts are
similar throughout NA. There are also general comparisons to other
utilities and NEC. If you have another source that is fresher, please post
a link to the group.$FILE/POWERQ.PDF
Check page 42 where it lists nominal operating voltages and what limits are
"acceptable" and "extreme". Also worthy of mention is the Measurement
section for those wondering about the accuracy of their Kill-A-Watt or

Interesting discussion at Nominal
110/220V disappeared after 1940. Probably about the same time 25 Hz made
it's last stand.