Using an adapter with a lower amperage rating than the socket is not recommended and can potentially lead to various issues, including safety hazards and damage to the electrical devices.
In your case, you have a refrigerator with a 250V 16A socket, but you are using a 250V 10A adapter. Here's what could happen if you insert the adapter:
Overloading the adapter: The adapter is designed to handle a maximum current of 10 amps. If your refrigerator draws more than 10 amps of current, the adapter could overload, leading to overheating and possibly a malfunction or failure of the adapter.
Overheating and fire risk: An overloaded adapter can heat up excessively, and if it doesn't have proper safety mechanisms, it could pose a fire hazard. The risk of fire increases significantly if the adapter is left unattended for long periods.
Damage to the refrigerator: If the adapter cannot handle the current required by the refrigerator, it may not be able to provide sufficient power. This could result in the refrigerator not functioning properly or even damage its electrical components.
Voiding warranties: Using an adapter that is not recommended by the manufacturer may void any warranties or insurance coverage you have for the refrigerator.
To avoid these risks, it's essential to use the correct adapter that matches the electrical specifications of the refrigerator's socket. In this case, you should look for a 250V 16A adapter that is compatible with your refrigerator's socket shape.
If you're unable to find the right adapter or need to make modifications to use the correct one, it's best to consult with a qualified electrician to ensure a safe and proper solution. It's not worth compromising safety and risking damage to your refrigerator or home by using an incompatible adapter.