The country you live in will have a national plug standard for that application.
Yes, but you need a converter that changes 220 to 110, if you plug it into a 110 plug. Of course, if you plug it into a 220 outlet you don't need a converter, but in either case you will need a plug adapter.
220
You will need a 110 volt to 220 power converter for overseas travel
No, it is more difficult than installing a new plug. You cannot reuse the wire, it must be a dedicated circuit, you will need a new outlet, and you will need a new breaker. Install a new plug.
Not advisible.
no
220 volt electricity 3 prong plug.
A device that uses a 220 15 amp plug requires a 220-volt outlet with a 15 amp capacity.
You can do a 30 amp twist lock receptacle 220v 3 wire (nema L6-30R) or a strait blade 30 amp 220v 3 wire receptacle (nema 6-30R) or a traditional 30 amp dryer plug. The nema # is a universal # that everyone uses to identify that plug. Ask for it. The most important part is the 30 amp male that your trying to plug in. Match it up with what you putting in the wall. Use #10 gauge wire for 30 amps
An adapter that has 220-volt input. The size (wattage) will depend upon what appliance you want to plug in.
two prong connector & 220 voltage converter
20v for laptop works fine