Wiring 2 outlets to 2 dedicated 20 amp circuits with a single 10/3 electrical wire.

What a mess? Did you actually read the part where jea48 explained how your new work could easily be converted to one dedicated circuit in about 10 minutes? Then add a second one, and you're finished. You're out some additional money due to the first electrician not doing exactly what you asked. Stuff happens.

And now I’ve got a quad panel on my wall and wonder if I can do 2 dedicated circuits to be wired into that one 2 outlet plastic box inserted into my wall. Or do I need to create a new hole in the wall for the new dedicated outlet and convert quad panel to one circuit.

From a previous thread Jea was on, I would suspect the a quad is closer together than he would like the outlets to be?

But cutting a new hole in the wall isn’t that big a deal.  Or you could try using just one circuit for your gear and see what you think of that.

@emergingsoul said:

And because of the push pull action of the circuit because it’s on alternate phases the neutral wire has no current.

Not exactly...

Only the unbalanced 120V loads of L1 & L2 returns on the neutral conductor to the source. The balanced 120V loads of L1 & L2 are in series with one another and fed by 240V.

Example:

Say L1 120V load is 2 amps and L2 120V load is 6 amps. 2 amps is the balanced load. The difference of 6A minus 2A = 4A. 4A is the unbalanced load and returns on the neutral conductor to the source.

The L1 120V 2A load represents digital equipment.

The L2 120V 6A load represents a preamp and power amp.

.

JEA48..Help me with this ,please

It’s actually worse than installing two 120V dedicated circuits and terminating on breakers from Both Line 1, leg, and Line 2, leg instead of installing both on the same Line, leg.

So, are you saying both circuits should be run from the same leg on the panel rather than one circuit on each leg?

I plan on running two 12/2 - 20amp circuits, 24’ and terminate in two quad outlet boxes......Yes/OK?

And, if I’m running two 12/2, should the run side by side, be spaced a certain distance apart or be twisted over the 24’ length?

Thanks in Advance!

My three takeaways on this thread:

One - to the layman electricity can be confusing and strange and yes electricity can do some unexpected or difficult to explain or even outright bizarre things in certain circumstances.

Two - the layman that wants to understand a particular electrical question really needs some Electricity 101 before getting an in depth technical explanation. The layman has too many misconceptions and misunderstandings about electricity that need clearing away before technical explanations begin. The OP finally started to grasp the issue once he started to understand that split phase transformer that supplies the power to his house.

Three - if the expert explains that choice A is not ideal and that choice B is the way to go, take his word for it. The recommendations byJEA48 in this thread are exactly what was done for my two dedicated power lines a few years ago.