Good day all. I'm a little stumped and looking for sound advice. I'm working on a kitchen remodel. The former kitchen had 40amp service going to a built-in oven and 30amp service going to an electric cooktop. The refrigerator was not on a dedicated circuit and there is/was no microwave when i purchased the home. Post remodel, there will be a commercial style dual fuel range which calls for 40 or 50amp service. My plan is to use the old oven oven connection for that. That leaves me with the old 30amp (240v) cooktop connection not being used. The 30 amp connection is provided by a 10/3 wire coming in from two 30amp breakers bonded together at the panel. My plan is to use this line to provide a two dedicated circuits for the future refrigerator and microwave. (replacing the 30amp breakers with 20amp). My question is: with this setup i'd be sharing a neutral wire with both circuits. Is that a problem? If it is a problem, is there a better way to set this up? My understanding is that modern code requires dedicated circuits for these appliances and since this circuit otherwise would not get used, i figured this would be a practical thing to do at this time. Thanks in advance!

Hi - just a simple question while replacing a very old 3-way switch. The old switch has no green ground screw. There are two cables coming into the metal electrical box. The ground wires from each cable go into a copper-colored clip, and then a pig tail goes from the copper clip to a silver clip on the metal box. The new switch has a green grounding screw. Rather than undoing the existing grounded wires (that go to the metal clip), can I just ground the new switch to another green screw that I add to the box? Or do all of the grounds have to go to the same place?