[AMRadio] 220 vac line

[Jim Wilhite]

It could also be test meters that are a bit off because of environmental 
conditions.  I assume the meter used to check the voltages have had 
calibration checked.  If not they could be off 2-5% one way or another. 
Should it be high 2% would be 2.5 volts.

Just some random thoughts.

Jim/W5JO


----- Original Message ----- 



> The 127 VAC is unquestionably high. Particularly reading that at the
> convenience outlets (the point of utilization). You say 127 is normal 
> for
> your location? Perhaps so, I don't know how long you have known it was 
> that
> high. But what could be the situation is a substation or down line 
> voltage
> regular could have been stuck in the full "raise" position then gone
> undetected for weeks or months. Finally the electric utility became 
> aware of
> it and changed it out (or replaced the control panel) and now it is
> regulating at 126.6.
>
> I say all this because I've experienced it numerous times (I work for 
> a
> Cooperative electric utility) when a regulator would fail either in 
> the full
> "lower" or full "raise" mode.
>
> There are so many things it could be -- Even air conditioning load on 
> the
> distribution circuit. But that's what a voltage regulator is supposed 
> to do
> -- maintain roughly the same voltage set point as the load varies.
>
> Good luck!
>
> Mark
> KA4CID
>
>