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Main vs. sub panel for dedicated lines

I am building a second home on my property. Will have a dedicated audio room. I will be routing 2 or 3 dedicated lines for my audio system. The high current devices for the home will be run off the main panel. I will install a sub panel supplied by the main to accommodate power for 2 bedrooms and a 1/2 bathroom.  

Question, should I run my dedicated lines off the main or the sub panel? I could move some of the high current devices to the sub panel if needed.

Thanks in advance for advice. 
mesch
lowrider57's avatar
lowrider57
5,417 posts
 
SQ has been debated, but keep the audio system together on the same leg (phase).

mesch OP
3,506 posts
 
Yes, I intend to do so.
noromance's avatar
noromance
9,821 posts
 
It is cheaper by far for the electrician to just drive two ground rods and be done with it.
Exactly what my electrician said when we replaced the water main copper with plastic.
jea48
4,446 posts
 
lowrider574,352 posts

06-02-2021
10:37am


@jea48 @mesch
I have a new service panel and a subpanel. When the sub was installed, a second ground rod was added. Two different electricians installed the panels, both said two ground rods were required to meet PA code.
@lowrider57

Two rods yes. Both should be for the main electrical service panel.
(Reason for two as I described in my post above.)

If you would, go out side where the two ground rods are located and look if you see only one bare ground wire going into the house and not two ground wires.

The correct installation, the two rods shall be a minimum of 6ft apart from one another. The two rods are connected together with a ground wire that is then extended into the house and connects to the service entrance neutral conductor buss bar. The neutral bus bar is bonded/connected to the panel metal enclosure.
The two rods are counted as one Grounding Electrode, (NEC).
.

cissado
113 posts
 
I'm confused about the second (set) ground rod for the 2nd panel  issue. I'm familiar with installing two ground rods and connecting to the main panel. Sometimes a second panel (subpanel) is installed on a 2nd floor of a house for circuits in a bedroom, lights, etc... so are people suggesting we run a ground wire outside from there and connect it to a ground rod (or two)? 

A sub panel connection has different rules than a main panel. 
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