> std 110 outlet at each seat would help a lot. > Doesn't scale very well. A modern airliner has a couple hundred seats... I got asked about some issues on the remote controlled power supply for our new ethernet switch. 8700 watts. Presumably that's about 20W each for several hundred ethernet ports (PoE), plus a thousand watts or so for the switch itself. Sigh. BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist