"Greegor" wrote in message
...
On Jul 5, 1:40 am, John E. wrote:
I have been asked to offer an opinion in a sensitive situation.

"Are we sure that the electrician was given
the option or assignment to do a needs
analysis?

Do we know that he wasn't given specs to
meet before the machines were in place?

If he was asked to meet specs from a plan,
is he really on the hook for the full needs analysis?"

It really isn't known if that actually caused the failure. If the equipment
was new, there would have been instructions and customer support including
things to look out for. What exactly failed? Capacitors can self-destruct
without warning, a rectifier can short. How can we tell which came first?
The equipment is used so there can be no guarantee. I bet you don't have
measurements of the actual voltage at the time of installation. This has
been a problem lately with a bank of 10 year old audio amps that have been
self destructing with blown caps and charred power supplies. No indication
of why.

Another controversy revolves around how thorough can an installation be
before a customer goes to a lower bidder. Even landing men on the moon had
elements of uncertainty.

But I would have measured the primary voltage if it were present. Lacking
an installation manual, I would have at least looked for taps.

You can rent a chart recorder to see what the line voltage is doing over the
course of a month. It may be a building management or electric company
issue like a poor or missing neutral. It makes no sense to me that a 20%
overvolt would have done any damage unless the equipment was on it's last
legs.