New sub panel - securing feed cables to back of panel
The feeder cables to my new sub panel come up through the bottom.
The electrician said that it wouldn't pass inspection unless the large feeder cables were secured to the back of the panel. He secured it with the adhesive square mounting plates and pull ties. It passed, but now the adhesive squares have let go and the tension on the cables has them pushing against the back of the cover plate.
What is the best way to secure the cables to the back of the cabinet so they won't keep letting go?
Thanks in advance!