Absolutely!! And if you don't know, get someone who really does. The
dangers are real. I don't often see wye-connected equipment, but
that's because I usually deal with smaller stuff.
Donald.
> From: "Phil Ethier"<pethier@isd.net>
> Date: Fri, 12 Oct 2001 21:52:23 GMT
>
> >
> >Don't know whether this will help anyone else - but what I understand from
> Donald's
> >explanation is that the three phases are equal and balanced but the neutral
> is not
> >"at the center". Makes sense to my mechanical brain.
> >
> >
> >Donald H Locker wrote:
> >
> >> Hmmmm. I'll try some ASCII art.
> >>
> >> C
> >> / \
> >> / \
> >> / \
> >> / \
> >> / \
> >> / \
> >> / \
> >> / \
> >> A--------n--------B
>
> This looks like the "DELTA" configuration. There is also a configuration
>known
> as "WYE". Don't mix them up.
>
> We had a bake-out oven when I used to build electron-beam lasers. The
>electricians
> wired it wrong. They didn't even have the decency to test the oven. I did
> not know this. There was a large contactor in a metal case mounted up on the
> top of the framework. I flipped on the oven switch and the contactor closed.
> An virtually exploded. The cover blew off and bounced against our fume hood
> and back against the oven and back a few times before clattering across the
> floor. Damn, my heart stopped. My boss'
>
> Get a book. Look up these two wiring methods and be damned sure you know what
> you are doing.
>
> Phil "that's not the only time shoddy work by folks in that lab scared the
>hell
> out of me" Ethier
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