> I would think that both frequency and phase would have to match pretty
> closely,  or you'll end up with some very large currents trying to flow,
> it's the *amplitude* that will determine how fast it'll spin.
 
While that may be true and I am not really all that experienced with
kwh meters, still and all it would seem to me that while the kwh
meter obviously measures power or kilowatts per hour usage then the
frequency of the load should have something to do with it. Here is
my reasoning. You might have 220 service and only be running one
110 volt iron which would draw say 1200 watts and the meter is going
to measure the juice that the 110 volt iron uses just as it would
if you had 220 service and was running a 220 volt arc welder. So
it just seems logical to me that something *MUST* be stable in order
for it to work properly and since both voltage and current are always
variable units and voltage is amplitude then frequency should be
about the only thing that would "bother" it.
 
There is one more possibility.
 
What would happen if you had power fed in from the grid from two
separate locations and from two different transformers with each
"source" naturally being metered and you hooked the two sources
together and in that manner drew power from both sources
simultaneously? Would that change the rate or direction of meter
rotation? Assuming that you are welding and the welder is plugged
into the "right hand" side of the resulting circuit and nothing
was plugged into the "left hand" side would the "left hand" meter
be measuring some of the power or would the welder draw from both
meters simultaneously or what the dickens would most likely be
the result. Seems unlikely that they would both draw current at
the same rate if there were say 30 to 50 feet or more of separation
between the meters due to the greater resistance of one of the runs.
 
There are a lot of fun and rather perplexing problems in this deal
and the results should be kinda interesting.
 
Bill Bauer
--- DB 1.58/004358
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