OK to Connect Flexible Metal Cable to Plastic J-Box?
I installed a metal junction box with receptacle in the firebox of our masonry fireplace. The new gas insert fan will use this receptacle.
I drilled a hole through the brick and ran flexible metal cable from the firebox through the brick and wall studs to a plastic junction box a few feet away (no drywall on the walls). I bored a hole in the side of the plastic box and connected the flexible metal cable via a fitting and lock nut.
Is this OK?