From: dxmm@albury.nospam.net.au   
      
   On 21/05/14 06:27, colonel_hack@yahoo.com wrote:   
   >   
   >> On Tue, 20 May 2014 12:10:49 +0100, Daniel    
   >> wrote:   
   >>>   
   >>> Don't know!! The impression I got was that domestic mains supplies PF   
   >>> varied reasonable as it was, due to domestic fridges, fluoro's, T.V.'s,   
   >>>  etc, switching on and off at different times,   
   > They switch on/off during few cycles (allowing for a starting surge) and   
   > run/don't run for many cycles, so the switching on & off only matters   
   > for the overall load. The type of load does matter.   
      
   Yes, your T.V. switches on and stays on for three hours, maybe, before   
   it's switched off. Meanwhile your 10-15-20 neighbours have also turned   
   on their T.V.'s and turned them off.   
      
   And your Fridge has turned on and, later, off. And your 10-15-20   
   neighbours' Fridges.   
      
   Etc., Etc., Etc..   
      
   The waveform on your power lines is a very complex thing!!   
      
   >>> that the major power   
   >>> suppliers did not worry about the domestic situation .... but in   
   >>> industrial situations, yes, the major power suppliers could/would   
   >>> require PF correction.   
   > Or they bill appearant power & the major users /want/ PF correction,   
   > Note that if you use a lot of reactive power it adds to the current on   
   > the grid and the power company still has to put in heavier wire, so it   
   > does cost them /something/.   
      
   It alters the phase angle between Voltage and Current in the Power   
   System, which will, eventually, require the power company to take   
   corrective action .... which they then bill *you* for, by way of   
   increasing the cost of power.   
      
   Daniel   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)