Main Breaker Tripped 2x

Under usual circumstances, there are two major fault conditions that would cause a 200 amp two pole circuit breaker found in a combination panel-board fed from a 120/240 three wire single phase service to trip ; one would be over-current and the other would be overload.

Assuming there isn't excessive ambient temperature, the breaker is not faulty, and a whole host of other possibilities that would fill a whole book (a library in truth) are not in part or in whole the issue at hand.

Of course Chum is quite right but Dent, why don't you try disconnecting those two outlets, then see if….

Thanks for your replies. So basically, I should call a professional to take a look see?

The buzzing from the breaker? If so, it needs replacing. If you replace it yourself, turn it off before messing with it and keep your hands out of the box as much as possible, by wearing gloves and doing the touching with your tools. If the buzzing is from elsewhere, consult an electrician.

First of all, unless you are a professional, don't attempt to change a 200 amp breaker yourself. No question about it. Could be s list of things like s previous reply mentioned. But in your situation with your experience , not trying to sound condescending, but 200 amps is nothing to take lightly. In a residential setting 200amps should be sufficient. However if your running ALot, and I mean ALOT of appliances you could need to upgrade your service. If your homes amp draw is more than 200 the main breaker will trip like any other breaker. In reality your only recommended to use about 80% of the amp rating. Again....200 Amp breaker....not a job for a do it your selfer. In this situation better to pay a professional than pay with your life.