Dedicated Circuits - Subpanel importance?

This happens a lot. Re-reading my post concerning the second point that I made, we are saying the same thing in a different way. Once a topic gets to this point, it is best to stay out of it.

 Not sure that you can change the POLARITY of an AC line, since it alternates. 

It's AC. There is no polarity per se. The AC waveforms have equal magnitude are out of phase

 

You are most likely right, but it doesn't seem like it would be a different phase either.

Guys,

When the full 240V secondary winding is used to feed a 240V load the winding works like any other single phase transformer winding.

Things change when 120V loads are connected to L1, leg, and the neutral, and L2, leg, and the neutral. This is where the polarity of each side of the secondary split phase winding gets interesting.

If  L1 to neutral and L2 to neutral loads are exactly the same amperage, zero amps will return on the neutral conductor to the transformer neutral center tap. Example 10 amp load connected to L1 and neutral and 10 amp load on L2 and neutral. Zero amps will return on the neutral conductor to the center tap neutral on the transformer. The two 120V loads will be in series with one another and fed by 240V. If a10A load is connected to L1 and neutral and 5A  load connected to L2 and neutral, the unbalanced load of 5 amps will return on the neutral conductor.

On a single phase dual winding secondary it is important to observe the polarity of the windings when connecting them together.

How it works.

https://www.allaboutcircuits.com/textbook/alternating-current/chpt-10/single-phase-power-systems/

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I had a long reply, but after reading the thread again I deleted it.... Some of you cats are too far out for me to even address let alone have to argue a point.   Anyone claiming to know it all about electricity is the most dangerous person at your home, job site, or utility.  

Work Safely,

Grizz

Retried 

IBEW Superintendent, Foreman, Journeyman wireman, Coal Fired PowerStation Electrician, C&I, and operations tech, and lastly Contractor.

 

 

LET'S TALK ABOUT SOUND and SOUND REPRODUCTION EQUIPMENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All I have to say is I made a boatload of money in the electrical industry considering all of the big brains telling me I'm wrong. I know NEC sucks and changes almost what seems daily. To all electrical working brothers and sisters please look twice work safe and go home to your families every single night.

With Respect,

C.A. Braden

Grizz (preferred handle)

Safest bet go buy 

If your equipment does not have a cord/cable or, from the the manufacture, is required to have a cord/cable with a 20A plug then it was designed and built to operate and perform properly on a standard 15A, 120V circuit. What makes anyone think that a DAC, CDP, turn table, ETC that draws less than 3As will sound or perform any better on its own 20A circuit. Household 120V outlets were not designed for 10AWG wire and No you Can and should Not have a secondary earth ground off a sub panel - not only will it do nothing to improve your sound, it is dangerous and in most cases illegal.

+++ to oldenslow and the few others here who actually know something about household and commercial wiring.......Jim

 

 

 

There are a few manufacturers that do make 20 amp outlets that support 10AWG wire.

Household 120V outlets were not designed for 10AWG wire 

   I disagree see below.

 

 

I met and for some time knew a guy whose grandfather, named Hubbell, invented the electrical receptacle and pull chain light "switch." In the early days of wiring electricity, they hadn't thought about plugging stuff in as opposed to hard wiring it.  Oh, and turning something on and off? 

My friend had some very nice race cars. Generations later.

The company is still a well regarded supplier of many things electrical. (I like the sunken airport runway lights) :)

*This was an unsolicited message that involved no exchange of consideration with the brand named. :)

@whart I love my hospital grade Hubbell outlets ;-)

@oldandslow Thanks for your book recommendations and other sage advice. My son just completed the first phase of his residential electrical education and I'lll share this information with him, especially your emphasis on safety. Like most audiophiles, I know just enough to be dangerous.

My son just completed the first phase of his residential electrical education

@vinylvalet

He should use that as a starting point and then try to move to the commercial and industrial electrical wiring industry. That's where the money's at.

I would recommend he start here:

Phoenix Electrical JATC

On the other hand, if he's meticulous, and can come into a multi-million dollar home and not damage half of what he touches, he can pretty much name his price.

@jea48 Thanks so much, very kind of you.