On Mon, 28 Jul 2003 22:19:54 +1200 Robert McDonald <rob@nzpages.net> wrote: > On Mon, 28 Jul 2003 21:59, Stephen Cope wrote: > > Philip Charles wrote: > > > Now with a lightning strike ... > > > > Your sentence seems to be cut off. Can you send the rest of it please. > <insert Imagination here.....> > If a starter motor is 10,000v > How much would a lightning strike be. > Assuming that 12v turns into 10,000v > Thats 833 times more powerfull than the original. > A typical lightning bolt contains 1 billion volts (source > http://www.lightningstalker.com/weather/lightningstalker/more.html) > > So 1billion by 833 I think this is false logic... A coil is a step up transformer designed to transform from 12V - 10,000V. Most power company ones step down from 11,000V - 400/230V, sometimes 33,000V - 400/230V. I worked at a power station, we had a boundary shed with opto-isolators for all telecom lines. This was to prevent the voltages from our switchyard, up to 110,000V, escaping onto telecoms circuits. They beat a fuse. > What do you suppose will happen to your computer when 833 billion volts gets > shoved up its socket! *G* > > Fireworks! (In Reality it would make little difference. Since a lighting bolt > would just blow up the transformer and jump the gap onto the other coil.) > > But the moral. There is no protection in a transformer. And in a smaller > strike it can even be a BAD thing to have a transformer. > > Cheers, > Rob > > -- > -------------- > Robert McDonald > NZPages.Net Web Services > Ph: 021 1770061 > ICQ: 86984875 > http://www.nzpages.net > > ------------------------------------------------------------------- > To remove yourself from this list, email nzlug-request@linux.net.nz > with "unsubscribe" in the body of the message. > -- Michael ------------------------------------------------------------------- To remove yourself from this list, email nzlug-request@linux.net.nz with "unsubscribe" in the body of the message.
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