ASR-33 conversion to 220V
cclist at sydex.com
Thu Dec 7 19:39:50 CST 2006
On 8 Dec 2006 at 0:32, Tony Duell wrote:
> AFAIK no equipment, either US or European can assume that one side of the
> mains is grounds (and safe to touch).
I own a Toshiba microwave oven (with 3-prong grounding plug) that
will not power up if the mains socket is wired up with the feed
reversed. Drove me crazy the first time I tried to use it until I
discovered that the idiot who wired the kitchen receptacles swapped
black and white at one socket in the string. The same refusal to
work may be true of some ground-fault interrupter receptacles (i.e.,
they always stay "tripped" if wired backwards).
The local Cheap Chinese tool place regularly has a special on
receptacle testers that make sure that the wide blade in the
receptacle is at ground potential.
> [For those who wonder what on earth I am talking about, portable
> industrial power tools -- electric drills, for example -- in the UK are
> 110V devices.
At what level does this not hold true? For example, I've got a nice
big router (portable) that draws a full 15 amps at 120v at startup.
That would be a pretty large transformer.
Nowadays, however, most portable tools are simply constructed as
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