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Re: [Amps] More on two pin 220vac

To: "amps@contesting.com" <amps@contesting.com>
Subject: Re: [Amps] More on two pin 220vac
From: "Fuqua, Bill L" <wlfuqu00@uky.edu>
Date: Tue, 15 Oct 2013 14:14:53 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>
  NEC did not limit the current to ground to zero.
It is limited to a small value in the microamp range. All equipment that have  
RF filters on power line input 
have leakage current. If the device floats the chassis will have 1/2 the 
voltage input voltage to relative to ground  if one
side of the power line is at ground potential. This is because you the RF 
bypass capacitors in these filters form a voltage divider 
with return (grounded)  being one end the "hot" side being the other and 
chassis being half way between. 
  If you have a ground fault interrupter you will find that you can only plug 
in just so many computers and radios, etc before
it will trip. And, it will trip even if they are turned off. 
 

73
Bill wa4lav
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