220V to 110V power distribution?
 

Hey everyone!

Been away from the site for quite some time, but getting back into getting a few things set back up after a move.

I have a dedicated theater room and was able to get a decent amount of dedicated power outlets run to various rooms during construction of the home. Long story short is I have changed how I want to have my components set up so I am exploring an alternative power strategy.

I had a 220V 100A dedicated line run to the theater room with the idea of having the flexibility of using something like a Richard Gray Power Company Powerhouse 7.2. Is there any other product that can take a 220V line and convert it over to 110V?

The room is an ATMOS setup with 3x McIntosh MC-601's, 1x Mcintosh MC-452, and 1x McIntosh MC-207 as well as two JL Audio Fathom F-113's.

I think, but I’m not sure because of the marketing mumbo-jumbo that the Powerhouse 7.2 is a balanced power transformer in a really nice enclosure.

You can look up ‘balanced power’ and find a number of vendors like Furman, Equitech, and Toroid Corporation of America.

Tom

For your needs, I highly recommend the Richard Gray Power Company Powerhouse 7.2 (available in Black or Silver)

I have one in each of my homes; and can hook you up. ;)

The Richard Gray unit will perform two functions, isolation and voltage step-down to 120v ( the secondary has fewer windings which drops the voltage).

The Furman unit only provides isolation ( input to output) 120v in 120v out balanced.

The secondary windings of both units will have a center-tap which is grounded. If the output is measured with an ac voltmeter from center-tap ground the remaining two terminals will measure 60v and be out of phase to equal 120v. That is balanced power.

If the secondary of an isolation transformer only has two terminals it will simply measure 120v and not provide the common mode (noise) rejection of a balanced power output.

I hope this sheds some light on the mysteries of balanced power output.

So on the output of the Powerhouse 7.2 if I measure from ground to neutral I’ll get 60 Vac and from hot to ground I’ll get 60 Vac and from neutral to hot I’ll get 120 Vac, correct?

Thanks for the help everyone. Looks like I will be reaching out to Masterlu for the Powerhouse 7.2.. ;)

Better hire some weight lifters at the corner gym. :D

http://www.richardgrayspowercompany....erHouse-02.jpg

Yes, if the Richard Gray is configured as I think it is.