star grounding question...

Rushton, Thanks! That thread looks like it will answer most of my questions? What of the dangers of star grounding? Anyone?

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

Ms. Jones must be a heavyweight. Just how big is she?

So how does star grounding apply to an A/C sub panel? What my electrician did is run a 40 amp 65' 8 gauge non-armored A/C cable from the main A/C panel to the sub panel. I then have 4 20 amp 7' runs of 10/2 romex to my A/C sockets. The only ground rod that I have is a 10' 5/8" commercial grade ground rod that goes to my main A/C panel. Should I have a separate ground rod for the sub panel or a separate ground wire from the sub panel to the main panel or some other configuration? The system sounds great, but maybe there's something that I can do to get a lower noise floor. I plan on using cryoed breakers and already have good A/C sockets. I also plan on using Virtual Dynamics A/C wire to replace the 8 and 10 gauge wire that I have presently. Thanks! Stan

Jea48-Yes, that sounds accurate. I watched the whole process. Also, my electrician said that 8 gauge was okay up to 180', after that 6 gauge is the way to go. So are you saying that it is already star grounded? Any ideas are welcome. Thanks! Stan

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