[Amps] FW: Bridging 120v loads across HV primary windings

[Gudguyham at aol.com]

You are right Joe, who the hell would ground a center tapped primary on a  
dual primary transformer???  AN EE?
 
 
In a message dated 6/3/2010 2:14:30 P.M. Eastern Daylight Time,  
lists at subich.com writes:

Not on  your life!  One never grounds the wiper of a variac  (auto-
transformer).  Connecting a 120 volt load between the center  tap
of a primary and one load line is EXACTLY like an  autotransformer.

There is no requirement that a neutral be connected to  the panel
as long as the (plate) transformer can handle the  unbalanced
primary current.

73,

... Joe,  W4TV