Hey Everyone- Unless i am working on a small kitchen.. i usually install the two required circuits.. and then install a dedicated circuit for the fridge. A microwave either countertop or rangetop sometimes will be connected on the same circuit making things pretty "close" i am one to be pretty generous with kitchen circuits.. because from experience thats usually the room that uses the most power and trips the most breakers.

Referring to the refers themselves i am not just worried about the running amps.. but the amps they pull when they first start up.. those compressor can get some strong head pressure on them sometimes. so i always feel better putting them on their own 20 amp circuit.. especially to isolate them from GFCI's