The size of the sub-panel is dependant upon the total load amps of the devices you want to connect. Take into account if more that one device will be or could be running at one time.
No, Europe typically uses 16A branch circuits rather than 20A. The electrical standards in Europe are different from those in the United States, including the allowable current ratings for branch circuits.
Usually 15A or 20A, but it depends on the wire used.
No, it is not safe to replace a 125V 20A fuse with a 220V 20A fuse. Fuses are designed to protect electrical circuits from overloading, and using a higher voltage fuse could lead to damage or fire hazards in the circuit. Always replace a fuse with the same voltage and amperage rating as the original.
A 20A switch is a type of electrical switch designed to handle up to 20 amps of current flow. It is commonly used in circuits with higher power requirements to safely control the flow of electricity.
Depends on the wiring of your RV. Some RV's are 30 amp, some are 50 amp. The 50 amp RV will use two separate circuits. Using two separate circuits in this circumstance is disastrous. But you shouldn't need more than 20 amps for your AC. 2500 watts is only about 10 amps.
The kitchen and garage are the only 20 amp circuts usually.
You'll want this on its own breaker. If there isn't a free breaker slot in your box, you're already in trouble - you'll have to consolidate two single breakers into a dual. If there is a free slot or two, you're in luck. Go to Home Depot or Lowe's. Ask the helpful guy in the electrical aisle which breaker you'll need and ask him to help you select the right wire. I could explain exactly what you need, but it'll be better to get that info on-site. Get all the tips you can on installation from the guy at the store - they get constant training on this stuff. Buy what he recommends. Then go home and do it. Alternatively, you could hire a professional electrician.
Stock fuses are usually 15a, but I use a 20a.
The 20A breaker can handle (25%) more power than the 15A breaker, because of this the wires used inside the walls is larger. Some circuits must be 20A, the laundry and kitchen are examples of 20A circuits.
No, using 10-2 wire for a 60A circuit is not up to code. For a 60A circuit, you need to use at least 6 AWG copper or 4 AWG aluminum wire. Also, the subpanel should be sized appropriately for the amperage of the circuit it is fed from. In this case, the subpanel should be at least 60A, not 20A.
2
20a + 45 = 5(4a + 9)