A:AnswerThank you for your interest in our products. Normally our surge protectors would not be used for appliances like your microwave. They would be used for home electronics like your TV. This being said you would want to keep the power draw on the surge protector under 12 amps so it doesn't throw the overload alarm on the surge protection. 12 amps would be around 1,440 watts so if it is only the microwave connected to the surge protector it should be okay.
A:AnswerNo you don't need in and out cable connections. Those are just to protect your coaxial cable in case a surge would travel through those lines, which that rarely happens.