A/C tripping the breaker

Well, it sounds like I have a bit of work ahead of me.

Thanks all for the suggestions. I'm going to start at the screw, breaker, power and then technician. Hoping something corrects the problem as it's never happened before. Perhaps with the additional A/C units going in the block, my power is dipping. Haven't heard of anyone else having the issue, though.

Thanks again. Will report back...hopefully!