No, it is not advisable to connect a 1200W vacuum cleaner to a regular 5A power plug socket. A 5A socket is typically designed to handle a maximum power load of 5A multiplied by the voltage of the electrical system (e.g., 5A x 120V = 600W for a 120V system). Connecting a 1200W vacuum cleaner to a 5A socket can overload the circuit and create a fire hazard.
To safely operate a 1200W vacuum cleaner, you should use a dedicated outlet that can handle the power requirements of the appliance. Depending on your location, dedicated outlets for high-power appliances are typically rated at 15A or 20A and have corresponding plugs that match their amperage rating.
If you do not have a dedicated outlet suitable for your vacuum cleaner, it is recommended to consult with a qualified electrician who can assess your electrical system and make any necessary upgrades to accommodate the appliance's power needs safely.