30i Tripping Breaker suddenly

My ViperCut 30i suddenly started tripping my breaker last night. Normally cut .100 - .125 aluminum, but last night I was cutting .200 steel. Not sure if that would be the cause or not? Using more juice? It was strange, it would cut small cuts/parts with no issues, but everytime I got into a long straight or curved cut (9+ inches) the breaker would trip. Flip the breaker and was back in business until the next long cut and it would do it again… any ideas? Bad breaker? Like I said no issues before last night.

Was your wife cooking something in the oven?:joy:
Just kidding. This 220 connection installed by electrician? I’ve had friends hook things for me before and it would trip the breaker had a licensed electrician look at it and it was wired wrong. Just saying

Could be a weak breaker.

Been fine until now, thinking a weak breaker.