20 Jan
2009
20 Jan
'09
10 p.m.
Rich writes:
The electrical
engineer on our team very carefully located three phase-isolated outlets
for us, working from the power panel outwards, before we did anything
else. We tested the plug box for phase isolation before connecting
either VAX, and we had every internal breaker off and every internal
plug disconnected for several hours while we checked the power coming
through the main breaker.
In my experience with getting 3-phase power run, even though there's
a 50-50 chance that by pure luck he'll get the phasing correct to run the motors
in the right direction, I inevitably find that with 100% certainty that the
electrician has wired it up reverse of what is actually needed :-).
Tim.
20 Jan
20 Jan
10:31 p.m.
Tim Shoppa wrote:
That's called "Murphy's Law". 8-)
Peace... Sridhar
The
electrical
engineer on our team very carefully located three phase-isolated outlets
for us, working from the power panel outwards, before we did anything
else. We tested the plug box for phase isolation before connecting
either VAX, and we had every internal breaker off and every internal
plug disconnected for several hours while we checked the power coming
through the main breaker.
In my experience with getting 3-phase power run, even though there's
a 50-50 chance that by pure luck he'll get the phasing correct to run the motors
in the right direction, I inevitably find that with 100% certainty that the
electrician has wired it up reverse of what is actually needed :-).
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