power distribution in the USA?
power distribution in the USA?
(OP)
What is rated 1-phase and 3-phase power distribution (rms or peak-to-peak) in The USA? What are basic formulas for its calculastion or where to find them?
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power distribution in the USA?
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power distribution in the USA?power distribution in the USA?(OP)
What is rated 1-phase and 3-phase power distribution (rms or peak-to-peak) in The USA? What are basic formulas for its calculastion or where to find them?
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RE: power distribution in the USA?
http://www.ieee.org
for
IEEE Std 141-1993 Electric Power Distribution for Industrial Plants.
ANSI C84.1-1989 includes voltage ranges.
RE: power distribution in the USA?
120/240 volt single phase
120/208 volt three phase
240 volt three phase with center-tap on one leg for 120/240 v
480/277 volt three phase 4-wire
480 volt three phase 3-wire
4160 volt three phase
6900 volt three phase
Check the standards already referenced for additional info.
RE: power distribution in the USA?
On the North-American continent, low-voltage four-wire systems are 208Y/120, 480Y/277, 600Y/346 and 240∆/120. Three-wire systems are 240∆, 480∆ and 600∆. Tightly regulated 60Hz is the norm.
One utility’s example of “Description Of Service” is: http://www.pge.com/customer_services/business/tariffs/doc/ER2.doc
RE: power distribution in the USA?
1. IEEE Std 241-1990 IEEE Recommended Practice for Electric Power Systems in Commercial Buildings, (Gray Book)