Hello everyone, I need a little help. I have a friend who opened a pizza shop and has a Hobart 2HP 3 phase dough mixer (building has 240V Single phase 100 amp service) which is on a 3hp phase converter (which is what phase converter manufacturer suggested). Now when he starts it on speed 1 it works fine but when the speed is increased and it's mixing dough under load it trips breaker. When it's run on any speed and no dough thus no load it runs fine. I'm a little green with the phase converters....am I missing something or could it be perhaps an issue with motor or converter??:-? I should mention the phase converter has a 30A disconnect fused at 15A which is fed from panel on 15A breaker. Never blows fuses. Thanks in advance for your help!!