[Amps] Bridging 120v loads across HV primary windings

[Jim Brown]

On Wed, 2 Jun 2010 00:16:30 +0000 (UTC), Paul Decker wrote:

>What is the rub? 

There isn't any. The center tap of a 240V transformer in a residential 
power distribution system IS grounded. The center tap of a 240V 
transformer inside equipment is NOT grounded, and MUST NOT be grounded. 
It CAN be connected to a neutral, but the only good reason for doing so 
is to supply 120V loads that are too large to drive from half of the 
primary. The master electrician apparently can't conceive of a 240V 
center tap that isn't grounded -- it's outside his field of expertise. 

73, Jim K9YC