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[Jim Ray <jim AT neuse.net>]

actually, me thinks the 480V 3 phase factory legs supply the 240V office by design.  i couldn't really tell you, though, because my little world is decidedly under 5V and shrinking toward the silicon bandgap.  let those smart people deal with the high voltage stuff.

i dunno what the voltage of mother nature's legs might be and hope i don't find out.  she doesn't follow the rules of mankind or the wires.  me thinks that protective fuse was the $60 variety.  doesn't that just really blow that you think you've got good protection only to find out mother nature is gonna have her way despite the effort?

Simon Spero wrote:

On Dec 20, 2005, at 9:33 PM, Jim Ray wrote:

i lost a $3000 phone system earlier this year with gas discharge suppressors on the phone lines and UPS on the power 

As predicted, a $3,000 phone system will sacrifice itself to protect a 10¢ fuse. 

The perversity of the universe does tend towards a maximum. 

Teach Maleficent Design

Simon

p.s.

Having seen a lightning strike on a building I was in (it  literally  happened whilst someone was saying  "That one was clo..." ), I know what a direct hit can do, but I still think that  putting  3-phase from the factory floor through 240V office circuitry should give us all  hope in the ability of mankind to drive the art of totally  screwing things up  to ever greater heights.

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