Thanks all. Everything you have posted makes good sense and was the feed back I was hoping for. I also appreciate the multiple offers for assistance. In this case I will be all set, but thank you, it is very nice
I am feeling better that the microwave is not the culprit and will test it on a GFI circuit. Facts as we know them lean towards this issue existing since the installation of the wiring when the house was built.
It does make me ponder how many other 'sleeping time bombs' exist
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