A:
The SMH1816S runs on a 110V outlet and the wattage is 1,100W,
This is considered a heavy load, and I would recommend a dedicated outlet along with a separate CIRCUIT in your CIRCUIT BREAKER BOX.
Otherwise, what could happen is that some other devices (such as a TV, or fridge, or lamp) that share the same circuit with his microwave could go out when this microwave starts.
This work must be done by a certified electrician and costs $$$.