Single Point Ground

A single point ground in a audio system could mean only 1 component is grounded. Typically the device that draws the max current. I have heard some 'tube' guys do that to eliminate ground loops/humming.

Jea48
Well I posted because I wanted an explanation of exactly what it was, I've read it is desirable. But if it comes with Code wiring then that is all I need to know. Just puzzled then why it would ever be recommended if it's mandatory. thks for the reply.

Xti16 I have in mind the wiring my electrician will be doing.

rogerdn

Well I posted because I wanted an explanation of exactly what it was, I've read it is desirable. But if it comes with Code wiring then that is all I need to know. Just puzzled then why it would ever be recommended if it's mandatory. thks for the reply.
02-24-09: Rogerdn

Can you give an an example of what you have read? Maybe a forum Link?
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Myths
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Can you give an an example of what you have read? Maybe a forum Link?

Jea48 This is one I recall,

'03-05-08: Saki70
Definetly do the dedicated circuits keeping your digital components on seperate circuits from your analog components .
Also put these on an isolated ground . Are you energy contious ? How many incandesent light bulbs have you switched to flourescent ? It is getting more difficult to isolate the noise makers now a days !
Make sure that your electrician is well versed in isolated grounds . This type of circuit is generally used in the commercial end of the buisness , hospitals and computer centers . I found that residential electricians were aware of isolated grounds but did not know the proper procedure for installing them !
see I have mixed up single point with isolated grounds, sorry. So can I start over are these recommended and how are they implemented.',

But I see I confused single point with isolated grounds,
sorry. So can i start over, is this desirable and how is it done?

Ok from an electrical point of view that's different. By national code all building wiring must have a single point ground. First you need to understand that neutral is a current carrying conductor and earth ground (3rd prong on the pc or outlet) is a non current carrying conductor but there for safety. Neutral and ground - electrically are the same point and there should only ever be one point where they connect.

Isolated grounds on a receptacle the other hand is a little better. Normally conduit is the 'earth ground' and tied directly to the 3rd prong. With Isolated ground you want to run a separate ground wire back to the single ground point - not to neutral.

Also make sure if you do decide to run isolated grounds that those grounds are not better than what exists. Your post made me look at my 'single point ground' and found my ground wire is quite corroded.