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What to tell my electrician

I am building out a dedicated listening room in a house we just purchased. There is a dedicated 200 amp breaker box for a hot tub we are getting rid of. So, I will have this breaker box deducted for a listening room. Assume i have a rig with mono blocks (ss), multichannel amp (ss) ,pre/pro, universal disc, dac, large led tv, cable box, distributed audio/video controller (control 4). The room is in the basement not very far from the breaker box (running lines would not be a problem). Also, the walls will be opened for the renovation so adding outlets and running wire not an issue.

I have read many of the threads on the subject here and am often confused by conflicting info and partial advice

So, what I would like is for any friends out here to put yourself in my shoes and imagine you are telling the electrician (who from what I have read will typically be amused and a bit confused by the Audiophile focus and perhaps not the best source of advice) what to do. So, would be great if the post is you imagining you are speaking to the electrician and saying. "ok, here is what I want you to do ......"

Assume I want to do it right and legally (so no non code separate grounds).
dangelod

Showing 2 responses by jea48

jea48
2,944 posts
 
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NEC 2008
250.146 (D)

Quote:
Isolated Receptacles. Where installed for the reduction of electrical (electromagnetic interference) on the grounding circuit, a receptacle in which the grounding terminal is purposely insulated from the receptacle mounting means shall be permitted. The receptacle grounding terminal shall be connected to an insulated equipment grounding conductor run with the circuit conductors. This equipment grounding conductor shall be permitted to pass through one or more panelboards without a connection to the panelboard grounding terminal bar as permitted in 408.40, Exception, so as to terminate within the same building or structure directly at an equipment grounding conductor terminal of the applicable derived system or service. Where installed in accordance with the provisions of this section, this equipment grounding conductor shall also be permitted to pass through boxes, wireways, or other enclosures without being connected to such enclosures.

FPN: Use of an isolated equipment grounding conductor does not relieve the requirement for grounding the raceway system and outlet box.
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jea48
2,944 posts
 
This creates a separately derived system; one which must be grounded as well. However, this ground, while connected to all available grounding electrodes (typically cold water on the street side of the main water shutoff, within two feet of the entry of the water pipe to the house) and a supplemental grounding electrode (ground rod), will be an independent connection for the derived neutral on the isolated system. This method means least electrical noise intrusion into the isolated system.
Sepolansky,

You are saying the neutral, (The Grounded Conductor), of the secondary winding of the xfmr has to be connected to the existing grounding electrode system of the main service of the premises, correct?

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