[villagetinker]

Originally Posted by Chatbrat

Refrigerators & freezers should never be on a GFI & a AFCI breaker.

Ok, just a point of clarification. I just checked my CB panel, AFCI breakers are for bedrooms, living room, dining room and nook areas. GFCI breakers, master bath (ceiling light), and washer dryer. the refrigerator and Microwave, etc. were all on regular circuit breakers.
In a previous post I was not clear about the neighbors problem, the refrigerator (on a regular CB) was causing the AFCI for the living room to trip. The electrician simply swapped the refrigerator to a CB on the opposite side of the panel, and this seemed to have stopped the problem.

So it would still be interesting to see if SECO comes up with a cause for multiple CBs tripping at multiple homes in the same general time frame.

Hopes this helps.