[R-390] Need help fixing R390A not to trip GFI breaker

[Barry]

>The caps in the line filter may not be LEAKY.
>
>They are simply acting like capacitors.  They are connected from each side 
>of the line to the chassis. If the chassis is not grounded, this creates a 
>capacitive voltage divider and you get about half the line voltage on the 
>chassis.  If the chassis is grounded, the capacitive current through the 
>caps from line to chassis unbalance the currents in the line and neutral 
>enough to trip the GFI device.


It is true that the caps may not be leaky; however, if you look at the schematic for the line filter I used in my "conversion", it, too, has caps between both legs and ground.  What puzzles me, though, is why these caps do not set up a current path to ground like the ones in the R390A filters do.  I assume it is the value of the caps used create enough reactance to minimize the current path, but not sure.

http://www.mouser.com/catalog/631/958.pdf

Barry - N4BUQ