My little garage has a sensitive 15A breaker, but I may have found a couple small 4-6 gallon pancake compressors that push over 4CFM at 90 PSI and draw 14 amps.
Seems most of the plasma units I have seen need about 4.5 CFM at 60 PSI. That seem right?
Sounds like it may be time to replace the breaker in your garage. After many "trips" they do become weak and may warrant replacement. It helps if while using a high amp device that anything else that might be on that same circuit either be shut off or removed to allow less load on the breaker and sufficient voltage and amperage to said load. I've even used a small welder powered by a 3K watt generator before...
Also, don't forget that tank size may be important here as well because if the tank reserve holds up to each cut (or more) then the compressor doesn't have to deliver at the capcity required by the plasma cutter's consumption. As long as this M/O is suitable for your needs then just let the compressor catch up between cuts...
