One reason is that the loss in the lines is I time R squared. So, with a higher voltage, the current is lower for the same power transmission.
R= resistance in ohms I = current in amperes
Al
Why high voltage for power transmission?
Jul 07, 2006
28 Replies
In response to what Al posted in news:no.spam- snipped-for-privacy@news.verizon.net:
Oh dear. Power = I x I x R!
Joe Soap.
JUNK is stuff that you keep for 20 years,
then throw away a week before you need it.
True, but the generator is a constant-voltage source which supplies
whatever current the load needs through the transmission lines and
transformers in the system.
OK, I got the oil gag, but this one escapes me. Can you 'splain?
Thnaks, Rich
I think he means ferro-resonant ones are self-regulating, hence automatic transmission fluid.
-- john
On Fri, 7 Jul 2006 18:36:44 -0500, Abstract Dissonance wrote in Msg.
Wrong on two counts. Conductors are always full of electrons -- independently of the current through them, and liquid water doesn't appreciately change its volume under preesure.
robert
Ah, got it.
Thanks! Rich
incidently, so are insulators, well except maybe hard vacuum and plasmas
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