Can you use 10/3 romex for two dedicated hots and a shared neutral and ground? Is that even code?
Code? Yes.....
A 3 wire multi wire branch circuit is not recommended for feeding audio and or video equipment.
The two hot conductor of the multi wire circuit must be fed from both Lines, legs. One from Line 1 (L1), and the other from Line 2 (L2).
Only the unbalanced load current will return on the neutral conductor to the electrical panel. The balanced load of L1 to neutral and L2 to neutral will be in series with one another. The balanced series loads will be fed by 240V, nominal. This works greats for tying the power supply of digital equipment to the power supply of analog equipment.
Here is a video showing how a multi wire branch circuit works.
https://www.youtube.com/watch?v=eVamt9IdQd8
Jim
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