[RFI] 80/160M RFI in neighbor's oven circuitry (PART 2)

[Bill and Cindy]

Thanks for the suggestions!
 
Adding a good ground system to the neighbor's breaker panel sounds easy enough.
 
The microwave/convection oven in question is the usual combination unit about
half the size of a refrigerator. I pulled mine out of the wall and as suspected the
unit's power cable is entirely in flexible conduit, it is hardwired into the house
electric system. How can I apply snap-on material 31 cores to this? I doubt
code will allow the wires to be exposed, will the cores be effective if snapped
around the flexible conduit?
 
73 Bill KO7AA in Tucson