Agreed that a circuit breaker can become tired. I do not play with microwaves and did not realize some where 1500 watts.

I guess though you can buy them in many power configurations though. Just never gave it any thought. I have been putting them on self standing plugs with fifteen amp breakers. I better really start to read the backplates on the microwaves more.

It was not meant to be a criticism.
On most stuff there is a Tag that has the Watts or Amps. Also sometimes it is on the Box.

There is also large Capaciter inside that can shock you even if the Oven is un-plugged.
You either avoid it or go in the Internet and find out how to discharge it safely if you don't know how to do that.

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84 300D, 82 Volvo 244Gl Diesel