On Jul 5, 11:39*am, "Geoffrey S. Mendelson"
wrote:
Doug Miller wrote:

Incorrect. Distribution voltages are on the order of a few thousand volts,
stepped down by transformers at the point of service to a few hundred. New
location = different transformer = possibly different service voltage even if
the distribution voltages are exactly the same.

Yes, BUT, a power company attempts to keep a constant voltage through their
service area. While the voltage fluctuates due to equipment, load, etc, I don't
think you can honestly say that if it is 220 volts on one side of town, the
same "grid" produces 240 on the other side of town. It might be 242 in one
place and 239 in another, but even that's a big difference unless there is
a heavy load in one location and not another.

The EU spec allowing household line voltage to be 240 volts while claiming 230
was to allow the UK to keep their current system while being "in spec" but I
doubt it was intended to allow variations from as much as 220 in one place
and 240 in another within the same country.

Geoff.

--
Geoffrey S. Mendelson, Jerusalem, Israel *N3OWJ/4X1GM

Was going to ask someone knowledgeable to post the percentage voltage
variation allowed in the USA (or wherever it is) for 'normal service'.
For example if one were to look at European and similar so-called 230
volt systems might find that plus 10% to minus 5% (or some such thing)
quite normal? Just using those as an example that is around 218 to to
253 volts!
The question posted states "Upwards of 245 volts, whereas the machine
taps were set for 220 volts".
That is only a 12% difference! And when was the voltage found to be at
245? Immediately upon installation or several days/weeks later?
To answer the question as asked; I don't think the workman who did the
wiring is/was responsible. More so the owner who should take
responsibility for not using the proper trade/profession. If it was
say an insurance or warranty situation surely whoever has to repair or
supply the 'blown' part would ask "What tests or checks were made
after the machine was moved here and hooked up anew? There is also
nothing to say that the machine had not been working on 245 volts, or
whatever , at the old location. Also what was the agreement or
contract with the worker about testing the machines at the new
location once hooked. Maybe? Maybe not? Maybe more a task for the
people who regularly operate and service the machines regardless of
whether they are in the old or new location? Did the owner get a
cheaper job by taking the risk of using a non-registered electrician.
Two cents fom here based on what's provided!