Canucks:
Jea is absolutely correct about spending the extra $ to run a ground connection feeder. If it were me, I would also size it at 6Ga. But then, I am the one who suggested being sure to check your entire grounding system to make sure it was adequate or oversized. Make sure that the ground conductors going to your ground sink are also appropriately sized.
If it were me, I would go the extra mile and use the isolated approach. Jea has very clearly shown you your options.
Question to Jea:
With putting all of the audio devices on one phase of service, do you have concerns with load balancing, or are you also using a sub-panel and balancing loads in the main panel? I am assuming from your language that you are using a sub-panel yourself. Yes? Have you wired it 120/230V or straight 120V?
Jea is absolutely correct about spending the extra $ to run a ground connection feeder. If it were me, I would also size it at 6Ga. But then, I am the one who suggested being sure to check your entire grounding system to make sure it was adequate or oversized. Make sure that the ground conductors going to your ground sink are also appropriately sized.
If it were me, I would go the extra mile and use the isolated approach. Jea has very clearly shown you your options.
Question to Jea:
With putting all of the audio devices on one phase of service, do you have concerns with load balancing, or are you also using a sub-panel and balancing loads in the main panel? I am assuming from your language that you are using a sub-panel yourself. Yes? Have you wired it 120/230V or straight 120V?