Hi Saki70, the issue of installing a second and separate ground in a household system has been discussed extensively in the forums. Some knowledgeable contributors say doing so violates Code and creates a potential for a dangerous situation. Others say its the best way to improve your sound. From what I've read, I'll not do it. Bottom line, if you had a licensed electrician make the installation and the electrician got the work inspected and approved, it must be okay in your locale. If the work was not inspected...
For those who are looking for more information about the installation of a separate ground for the audio system, here's a thread with more discussion:
http://forum.audiogon.com/cgi-bin/fr.pl?htech&1193750975&openfrom&1&4#1
I recommend paying particular attention to the contributions from Gs5556 and Jea48 .
And this is all I know on the topic, so I won't be able to carry this any further - just offering the caution because so many audiophiles have gotten carried away on this isolated ground topic, and I find the potential for danger pretty frightening.
.
For those who are looking for more information about the installation of a separate ground for the audio system, here's a thread with more discussion:
http://forum.audiogon.com/cgi-bin/fr.pl?htech&1193750975&openfrom&1&4#1
I recommend paying particular attention to the contributions from Gs5556 and Jea48 .
And this is all I know on the topic, so I won't be able to carry this any further - just offering the caution because so many audiophiles have gotten carried away on this isolated ground topic, and I find the potential for danger pretty frightening.
.