star grounding question...


I'm not sure that I understand this concept. What is star grounding? How is it done? Should my dedicated A/C sub panel be star grounded? What are the advantages? And is there any danger?---(lightning strikes, other problems...) Thanks!
talon4
Correction: My electrician said that I was okay with 8 gauge wire up to 80 feet- I'm pretty sure, (not 180 ft), after which time I need to use 6 gauge wire.I know that he said 8 gauge was the proper wire to run for code for my 65' run to sub panel. Nsgarch-----Yes, there are 4 20 amp breakers in my subpanel. And yes I've both heard and read that it can be dangerous to run a separate ground rod, which I haven't done. Also, the breaker at the main panel is a 40 amp breaker, which connects to the 8 gauge A/C wire that then goes to my sub panel.Thanks!
Nsgarch, Jim, and Rushton thanks again for all your input. Elgordo, Loontoon and Gunbei thanks for the laughs. Best! Stan
Gunbei, Well, I already have a dedicated romex A/C system that's been in place for about a year now and it seems that I'm already star grounded... So all that's left to do is change out the romex for Virtual Dynamics wire... 10 gauge-(short run) and probably 6 gauge armored for the long run-(If my electrician says that it's okay), get some cryoed breakers and I'm good to go. As always, Audiogon has proved to be an invaluble source of knowledge. Best! Stan
That's great, Stan!

Now you won't have to worry about the shortcomings of your AC and how it affects your system's sound. You'll be able to listen to your new gear with a clearer mind...And ears!

Dean