The main cable tray connection methods include splice plates, bolted connections, quick connect systems, fish plates, clamps, and welding. OBO BETTERMANN has offered prod-ucts and solutions for electrical instal-lation for over 100 years. With our many years of experience, we are one of the leading manufacturers in this field. Establishing partnerships. This publication is intended as a practical guide for the proper and safe* installation of cable ladder systems, cable tray systems, channel support systems and associated supports. I would like to introduce to you the five common ways to fix the cover plate of cable tray.