20 Apr
1999
20 Apr
'99
9:31 a.m.
In the mean time I notice the ebay bid is up to $180. I wonder what a
c4mf or a c8df would fetch?
George
=========================================================
George L. Rachor Jr. george(a)racsys.rt.rain.com
Beaverton, Oregon http://racsys.rt.rain.com
United States of America Amateur Radio : KD7DCX
On Tue, 20 Apr 1999, Daniel T. Burrows wrote:
Please ?
Equipment that assumes Neutral (protective ground) = Ground ?
At least over here this kind of device is _strictly_ forbiddeen since
In all of the UK equipment that I service from one particular manufacturer
they only switch and fuse the one hot lead. The Neutral is "assumed to be
at / near ground so it need no protection. If this is wired to a standard
US residential then you will have no fuse protection on one lead. It will
also be floating when switched off waiting to bite you.
See the following attempt at ASCII art wiring which looks wrong if not
viewed fixed width.
US residendial 240 /120 mains power
_______240V_________
| |
Hot____ Neutral_____Hot
| | |
|__120V___|__120V___|
|
|
|
Ground
This is tied to Neutral
at service entrance ONLY.
30 years, and I assume it's the same all over
Europe. Only machinery
with distinctive Ground and Neutral or with isolated interior
is allowed
(the wide variety of outlet/plug systems within Europe did support the
later one a lot, since most are at least compatible for 'hot' and Ground
pins :). standard voltage (with an upper limit of 120)
which comes to 200V (208V),
and not 220 - and 200 is definitive to low to drive 230V (240V) equippment.
Not even the old standard 220V Eq will run properly in all cases.
This is where the US confuses people. In commercial 3 phase it is 120 phase
to neutral. 208 phase to phase.
Again with neutral tied to ground at the service entrance ONLY.