By the way, last time I visited USA, I registered high voltage with 3+N and only 3 wires (connected to the transformers to the consumers network), eg in different parts of CA. What will be the difference, and normal voltages? (Reference to other threads or pages? since this not fits this thread?)
dsk
What are you referring to as "high voltage"?
For voltages in CA, the largest utility is PG&E, & here is a link to the "Greenboook" which lists the voltages they supply.
http://www.pge.com/includes/docs/pd...greenbook/greenbook_manual.pdf#Section_2
