> -----Original Message-----
> From: Katinka Mills [mailto:[EMAIL PROTECTED]]
> Sent: 24 July 2002 08:36
> To: Protel EDA Forum
> Subject: Re: [PEDA] Speaking of Protel Bugs.
>
>[cut]
>
> Besides I thought it was current that killed and ours is half
> yours ;o) (I
> know that a given voltage will cause a given current through a given
> resistance so unless we are better insulators in AU (and other
> 240Vac places)
> we would infact draw more power) I think this was the reason the UK made
> factories and construction sites use 120Vac (50hz) (hey a new
> standard) ;o)
>

I'd heard that the use of 120V power tools at industrial locations here in
the UK was to prevent theft!  There is also a safety aspect, as in most
cases - especially outdoors - an isolating transformer is used to drop the
230V mains to 120V.

In fact most UK factories use 415V 50Hz 3-phase power for 'heavy duty'
electrical stuff, in addition to 120V/50Hz (power tools, but not everywhere)
and 230V/50Hz (everything else).  As an extra complication, when I worked on
avionic stuff many years ago the lab. also had outlets for 115V/400Hz
3-phase (aircraft standard).

Regards,

Andy Gulliver



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