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Is a dedicated power line one that is using one circuit breaker and is solely dedicated to powering outlets that feed audio equipment and nothing else?
Or
Is it a separate sub breaker box wired into the main box or somewhere else that in turn has one circuit breaker or more that is feeding outlets that power audio equipment?
Follow Ups:
" Is a dedicated power line one that is using one circuit breaker and is solely dedicated to powering outlets that feed audio equipment and nothing else? "
That statement could also fit a 3 wire 120/240V multiwire branch circuit where two separate circuits, (each circuit fed from a separate circuit breaker), share a common neutral conductor.
Example of a 3 wire 120/240V multi wire branch circuit.
https://www.youtube.com/watch?v=eVamt9IdQd8
If installing two circuits you don't want a multiwire branch circuit to feed your 120V audio equipment, where the audio/digital signal of equipment is connected together with wire interconnects.
What you want is a 120V branch circuit with a separate Hot conductor, neutral conductor, and safety equipment grounding conductor.
Here is a great white paper to read before calling the electrician. Read pages 16 thru 36.
https://centralindianaaes.files.wordpress.com/2012/09/indy-aes-2012-seminar-w-notes-v1-0.pdf
A true dedicated branch circuit should not, share, be installed in a conduit or cable with other branch circuits.
" Or
Is it a separate sub breaker box wired into the main box or somewhere else that in turn has one circuit breaker or more that is feeding outlets that power audio equipment? "
Could be if the sub panel is dedicated to feed audio equipment.
There are factors that should be considered if installing a sub panel to feed audio equipment. If not done properly it can cause more harm than good.
The first paragraph is the description of a dedicated line.
thanks Duster!
The deal with a dedicated line is to isolate the grounds also from the house ground. To do that, you need to create a grounding system. One approach is to sink a long copper rod (8 to 12 feet?) into the earth outside your house and then connect the ground side of your dedicated line to that. Do not do anything I say without consulting a qualified electrician. Best to have a qualified electrician do the work, as well.
Thanks for the tip, Lew. I am not going that route, but if I did I would make sure my electrician was at least as knowledgeable as Mike Holt or close. Good video https://www.youtube.com/watch?v=qNZC782SzAQ
That's a rather old video now.....relatively speaking.
Any electrician shows up at your house now, they'll probably be required to drive a grounding rod (most likely two, with proper spacing.) Depending upon your local code.
Dave.
The thing I learned watching his videos is that many things folks believe is "better" (not necessarily audio related) is downright wrong or dangerous.
At least electrical physics has not changed much in 100 years unlike our appetite for new audio gear or tweaks.
And yes, I do believe there is code for driving two rods at a specific distance and separation for household power use. The thing I would not do is run a separate ground for a piece of equipment(s) that is separate and not connected to the household ground.
Separate grounding is not the only aspect to consider as beneficial. Depending on what the goal(s) is, keeping the noise generated by other electrical devices way from the AC delivery path of a single circuit that is dedicated to audio-only applications is a fundamental reason.
Providing a separate circuit for digital gear and a separate circuit for analog gear, or a separate circuit for power amplification and a separate circuit for all other audio components are options to choose from for a more intensive approach to dedicated lines.
Yes, I have found on a dedicated line that separating digital via isolation transformer based power conditioning is noticeable, when one cannot run two dedicated lines.
I suppose I need to try an experiment with an extension cord and a separate circuit to assuage any last fears of the computer and monitor affecting the audio gear.
The nice thing about keeping only a few items on a circuit is that I have been able to eliminate a very good Running Springs conditioning unit I was using in another environment.
Thanks again for the help, I think I am good for now.
May as well better-optimize the other end of the AC delivery system, too.
Check-out this post, Bixby.
See link:
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