Doesn't AC essentially has a lesser duty cycle at at the peak voltage - which is why RMS ends up being a more useful number? The DC has a 100% duty cycle - isn't this a mitigating factor when comparing them?
On Wed, Jun 25, 2014 at 10:32 PM, Robert Bruninga via EV <[email protected]> wrote: > >> "I thought I²R heating was greater for DC. > > > NO, if the power factor is perfect, the losses due to current > > squared times circuit resistance, are... the same for AC and DC, > > I can see that my original statement was confusing. What I meant was that > for the same conductor and same I^2R loss, DC can deliver nearly 40% more > power because the DC line can operate at the PEAK voltage rating of the > line, whereas the AC line only delivers that same current power at RMS > voltage, not peak. 40% increase is worth doing for long point-to-point > transmission (with no taps) -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do With your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140625/462bc6bc/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
