In my kitchen I have the left side of the counter plugs on a 20 amp circuit, the right side on a 20 amp, and the center by the sink on a 20 amp circuit. The fridge and microwave are on a 20 amp circuit also. Last week I had too many items plugged into the left side circuit and it blew the breaker for it. However when I came back after resetting the breaker, the microwave needed reset and my wife said that it turned off and back on real quick when the breaker blew on her. The kitchen and fridge plugs are on different phases in the panel. I have the neutral and ground for the kitchen left side on the ground buss bar and the fridge and microwave neutral and ground are on the neutral buss bar. Anyone know why this is. I rewired everything else in the house because of knob and tube. Everything from new light fixtures, adding dedicated circuits, and putting in new plugs and switches and running all romex lines.