-=> Quoting Scott Huffman to All <=-
 SH> (1) Why do mains transmission lines ("power lines") transmit
 SH> alternating current more efficiently (with much less loss)
 SH> than direct current?  [which is one of the two reasons why
 SH> we use A.C. for mains power..]
 DC can't be stepped up or stepped down in a transformers, like the
 ones you see on top of poles all over the country.
 Thus, the power companies use high voltage at low current in their
 transmission lines to reduce IR losses, then steps it down for the
 short distance run to a consumer wherever necessary.
... fire.chief@warpgate.com  
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