30 Amp 2-Pole Flush Mount Shallow Single Outlet, Black

Bare wire to the Green post Black wire to the Gold post White Wire to the Silver post

Number 10 stranded is good

30 amp breaker and 10 gauge wire. I am no electrician, but that's what I used

Different plug configurations have different amp ratings.

Yes, this is the correct socket for 240V. 30 Amps.

Yes you can, but, I would consider using a 20 amp double pole circuit breaker as opposed to the 30 amp circuit breaker due to the amount of current which might flow through your device before the circuit breaker pops. The idea behind the circuit breaker is to prevent a fire hence my recommendation.

Hi , Thank you for choosing Leviton. No the receptacle is only rated for 30 amps.

no you should switch over to new wiring if able

Your 14-30R is designed for three phase wiring. It has one ground (or earth) socket and three live sockets. If it is wired as three phase then you can not replace it with the 6-30R. If it has been misused and wired for 230 volts and two of the three live sockets are dead with the one live socket delivering 230 volts you can wire it as instructed on the information sheet with the socket. Your question prompts me to reply that if you don't know the difference then you should not be swapping these without help from an electrician.