Dedicated line questions...


Did a search, but can’t come up with a good answer. I am considering the install of a dedicated line. The general consensus is a 20amp circuit. How does this rectify with a full system designed around 15amp components/cords. I already have PS audio receptacles, and have upgraded/cleaned up all the other outlets on the current circuit, but it is still noisy. Would installing a 20amp circuit require a refit of gear or just 15-20 amp power cords? I don’t run big mono’s and really only need one line. Would a dedicated 15 suffice?  Yeah, fairly clueless in this realm.
geof3
spatialking323 posts

01-08-2021
7:09pm

I have read through this post and I noticed some folks here use both lines from the distribution panel. That is, line 1, line 2, neutral, and earth, such as would be wired when using the Southwire 10 awg, 3 wire. Since line 1 and line 2 are opposite in phase for North America (and anywhere else where split phase lines are used) that means hum is more likely to occur since the outlets are no longer identical polarization.

@spatialking
I suggest you reread the thread again. No one mentions using both Lines, legs, (therein a 120/240V multiwire branch circuit), to feed a single dedicated 120V branch circuit.

I think you misunderstood what @gs5556 meant when he recommended using 10-3 with ground Romex for a 120V dedicated branch circuit.

FWIW, 3 conductor with ground NM sheathed cable (Romex is a Trade Name of Southwire) is not designed/manufactured only for use for 120/240V multiwire branch circuits. 3 conductor with ground is also used for 3 way switching of lighting as well as split duplex receptacle(s) switching for table lamps. Top receptacle of duplex is hot all the time, bottom receptacle is switched by a wall switch.
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Just run 10awg from a 20amp breaker to a quality outlet. For my monoblocks I only use one inlet per outlet. I'm able to this because I wanted more than enough outlets. I separate analog/digital per circuits. This is not that difficult.
Yeah, in theory it is a piece of cake. Very simple. Unfortunately for me, actually running the wire would be very challenging.
That's the difficult part. As mentioned myself and some others on this thread have crawl spaces that make running the wire a lot easier. I don't know the layout of your house, but I have heard of guys running external 10awg and navigate the wire from the outside in. 
@jakesnak, that would be infinitely easier for sure, and a definite thought. I think I will wait until I get the ZLC in the mix and go from there... good thing is, I already have an outlet on an outside wall, so that could make the entire job very simple. I’m not sure if I would have code issues locating conduit outside the house.