From: billnews2@cox.net   
      
   On 7/14/2020 8:07 AM, Phil Hobbs wrote:   
   > On 2020-07-14 07:04, default wrote:   
   >> On Mon, 13 Jul 2020 16:49:33 -0700 (PDT), jurb6006@gmail.com wrote:   
   >>   
   >>> Your bill went up because of light bulbs and shit with heating   
   >>> elements, maybe the microwave if you use it alot, and of course if   
   >>> you have an electric stove.   
   >>>   
   >>> Those types of motors usually run more efficiently on slightly higher   
   >>> voltage. Voltage up, current is the same or lower. Well power   
   >>> actually, it might be the same current but the phase changes the   
   >>> power factor. You pay by the watt, not the amp.   
   >>   
   >>   
   >> I think you are mistaken.   
   >>   
   >> Some years ago I put a voltage stabilizer on a large fan.  (adjustable   
   >> AC voltage regulator intended to be used for large motors) As I   
   >> adjusted the voltage lower the current dropped linearly until it   
   >> reached about 95 VAC then started rising exponentially as I dropped it   
   >> lower.   
   >>   
   >> Torque of the motor may be dependent on voltage, but the torque   
   >> required for a refrigeration compressor varies with time.  Starting up   
   >> with the system equilibrated, there's little back-pressure on the   
   >> compressor so it is lightly loaded, as back pressure builds the torque   
   >> necessary to maintain synchronous speed increases.   
   >    
   >   
   > But if you have a momentary power dropout, it has to restart into the   
   > full back-pressure of the evaporator.  If the A/C isn't a tiny one, I   
   > sure wouldn't be mickey-mousing anything that would increase the mains   
   > impedance.   
   >   
   > Electrical codes contain a lot of non-obvious and very expensive wisdom.   
   >   
   > Cheers   
   >   
   > Phil Hobbs   
   >   
   >   
   >   
   >   
   My central AC won't restart immediately after a dropout.  It has   
   a delay time to allow the pressure to drop.   
      
   Bill   
      
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