Rotary

The breaker panel is in the garage where the machines are. I'm renting this place so I just want to pull a 220v line on a 30amp breaker. Looking to buy a home at the beach next year then I will set up shop for the long haul. Just want to build one now that I can carry to the next place.
 
7-1/2 hp rotary will pull 35-40A maybe more starting so check rating plate. I always upsize 120% Then next std size.
You may want to consider 60A dedicated to the rpc IMO

220v 60A fused disconnect to a mag starter w/overloads protecting the converter and a 3P 20 or 30A fused disconnect on the output to protect conductors feeding all your twist lock outlets.

Then manual starters/w overloads at each machine.

Lots of switchgear in a small space but if ya wanna do it right......
 
I have a 20 hp Rotary phase converter. I use a 60 amp square D QO breaker and upsized the feed wire 150%. It draws 125 amps for perhaps a second before settling down. No breaker problem or problem with the unit in three years. Rotary recommends the correct size breaker and wire in the info that comes with the converter. They are also a great source of 3 phase Square D QO breakers and breaker panels.
 
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