Very new to mining, so sorry for what may be a dumb question.  Initially I purchased a Antminer S9J.  I am in the US, so I had an electrician come out and install a new 20 AMP 240V circuit and two Nemo 6-15P outlets, and ordered a 14AWG C-13 power cable.

I have since decided I would rather run and have ordered a single Whatsminer m30s from this new circuit, but can't seem to find a 6-15P C-19 (which is what I believe I need) in 12AWG, only in 14AWG.  Is it likely I will need to change to a different outlet, and if so, should I upgrade to a 30AMP circuit.  I'm only planning on running this one miner on the circuit, so I think 20AMPs should be good.

Thanks,