Metal enclosure boxes are the standard choice for circuit breakers. That’s because a conductive metal box is necessary for grounding the control panel. In case of a malfunction of contactors or other electrical equipment in the panel, the fault current can be discharged harmlessly into the ground, avoiding potential damage and injuries.
4. Sealing and Waterproofing
The Advantages of Butyl Rubber Roofing Sheets

What is Self-Fusing Silicone Electrical Tape?
Applications of Butyl Rubber Tape