Hello. I am a master electrician. In the world of the 2020 NEC: Every three years it gets more complicated
It is a very long-boring legal document- try to read it when you need sleep....
1. For residential wiring, the kitchen requires 2- 20A 12 AWG copper circuits for to service the countertops. You can purchase a countertop microwave, toaster and other appliances and plug them in and they should not be a problem.
The purpose of 2 circuits is to connect some of the larger loads on different circuit so they aren't overloaded. Your fridge is allowed be connected to one of these circuits or have one of its own. The circuits are required to have AFCI circuit protections and if they serve a countertop or within 6' of a sink, GFCI as well. Dishwashers, garbage disposals and over the range microwaves need their own circuit, AFCI and GFCI. These circuit CANNOT serve lights or other rooms.
Electric stoves will require a 40- 60A 240V circuit also- GFCI protected, depending on the size of the range in KW It has to be a REALLY BIG stove to pull a 60A Circuit. Min size 8 AWG and 40A breaker.
Electric cooktops can be spliced into the circuit only if the circuit is 50A....AAAAGH! It gets more and more detailed.....
2. As to other rooms, bathrooms require a 20 A circuit- one for each or 1 for all if the circuit feeds only the receptacles which are GFCI protected. A 15A circuit from anywhere can provide power to lights, or a 20 A circuit could be just for a heater.
3.Living rooms and bedrooms are 15A for generally receptacles and lighting. Receptacles should be no more than 12 feet apart or 6' from a door or fireplace. But you can use 12 AWG for the whole house if you want.
4. AFCI - all living spaces , kitchen and bathrooms
5. GFCI - All wet areas, basements, crawl spaces, garages, bathrooms, near tubs, kitchen countertops and 6'in all directions of a sink, laundry areas, dishwashers, etc.
6. You may need 240V for AC refrigerated air. You might end up with a 60A circuit breaker here, depending on the size.
Read current how to books and be careful.
Enjoy
