Help with DIY dedicated circuit


I am wanting to install a dedicated circuit for my amp, but getting from my panel to the wall behind my amp is going to be difficult. As I was investigating in my attic, I realized that when I changed my stove from electric to gas, the unused 30 amp Romex 10/3 wire will reach within 15 feet of where I want the wall outlet. Do I install a junction box and run Romex 10/2 to the new wall outlet and use the 30 amp breaker? What is the best way to connect the wires in the junction box?
128x128jonandfamily
Pigtail with 12/2 it's easier to use and is fine for a 20 amp receptacle. Most likely the old 30 amp breaker is on 2 phases and you would be fine running 2 new breakers but unless you know for sure do what you said. 
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djones51
313 posts 10-08-2018 11:59am

Read your own link jea48 it clearly states to use 2 PHASES , I suggest you quit giving advice you are past clueless.
@djones51

HUH?

Is your username mental?

I suggest YOU reread my previous post. mental didn’t have any problem understanding it was directed at him.
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Sorry he deleted his posts it looked as though you were directing it to me as I didn't see his post. I can see I made a mistake going back and reading it again. 
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