Yes, you plug a 20 amp device into a 30 amp circuit.
The circuit always needs to be equal or greater than the device. If you plug to large of an appliance into a circuit, the circuit breaker (or fuse) should open the circuit so that no damage occurs.
Yes. Assuming everything is wired correctly and your 30 amp AC cord is compatible with your 50 amp plug, you can do this. I think you will find, however, that your 50 amp plug has a different pin configuration than your 30 amp cord end. This is not easily resolved because there are serious dangers in going the other direction, plugging a 50 amp appliance into a 30 amp receptacle.
yes
It is not recommended to create an extension cable that connects a 30 amp plug to a 15 amp plug. This can cause overheating and potentially create a fire hazard. It's important to use appropriate plugs and cables for the correct amperage to ensure safety.
If it is a 30 amp breaker then it is a 240 volt outlet.
No, the amperage pin configurations are different between a 15 amp and a 30 amp plug.
What is a 20 amp female transfer switch? I have never heard of such a device.
A device that needs a 30 amp 3 prong plug requires a NEMA 10-30 plug.
A 30 amp generator typically requires a NEMA L14-30 plug for proper connection to power sources.
Yes. Assuming everything is wired correctly and your 30 amp AC cord is compatible with your 50 amp plug, you can do this. I think you will find, however, that your 50 amp plug has a different pin configuration than your 30 amp cord end. This is not easily resolved because there are serious dangers in going the other direction, plugging a 50 amp appliance into a 30 amp receptacle.
yes
The recommended wire size for a 30 amp RV plug is typically 10 gauge wire.
It is not recommended to create an extension cable that connects a 30 amp plug to a 15 amp plug. This can cause overheating and potentially create a fire hazard. It's important to use appropriate plugs and cables for the correct amperage to ensure safety.
yes
If it is a 30 amp breaker then it is a 240 volt outlet.
No, the amperage pin configurations are different between a 15 amp and a 30 amp plug.
A device that needs a 30 amp NEMA plug requires a specific type of electrical plug that is designed to handle higher electrical currents.
A 30 amp fuse is required.