[Amps] Bridging 120v loads across HV primary windings

[Jim Brown]

On Sun, 30 May 2010 14:34:35 -0400, Martin Flynn wrote:

>Vic,
>Run the 4 wire circuit and call it a day.    I ran this very issue by a 
>licensed master electrician on Friday.  

>Direct quote: "If any portion of the load is 120 volt, you need a 
>neutral.  If you are hell-bent on a 2 wire + ground supply, get a 208 
>volt fan and appropriately tapped transformer"

Your licensed master electrican was WRONG. It is entirely legal, and 
entirely proper from an engineering point of view to place a 120V load 
across half of a center tapped transformer as long as that load is center 
tap is not grounded. 

73,

Jim Brown K9YC