I HAVE A COUNTER TOP. I HAVE A COUNTER TOP MICROWAVE MODEL #KOR611Q, AND EVERY TIME I PLUG IT IN

Question

I HAVE A COUNTER TOP MICROWAVE MODEL #KOR611Q, AND EVERY TIME I PLUG IT IN IT BLOWS THE FUSE. I HAVE CHECKED ALL THE RECEPTICLES ON THIS CIRCUIT WITH A RECEPTICAL TESTER, EVERYTHING ON THIS CIRCUIT WORKS PROPERLY. THE ONLY THING I CAN THINK OF NOW IS TO CHECK TO SEE IF THE BULB IS BACK FEEDING, <I AM SEMI NON ELECTRICAL> ALSO IT DOES NOT THROW THE BREAKER.I'M NOT SURE THATS THE WAY TO WORD WHAT THE BULB CAN CAUSE.I HAVE PLUGGED THIS MICRO IN EVERY RECEPT. AND IT DOES THE SAME THING