The primary function of cable tray end caps is to provide a protective enclosure for cable tray terminations. By sealing off cable ends, they shield delicate connections from dust, debris, and potential physical damage. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require. In the electrical wiring of buildings, a cable tray system is used to support insulated electrical cables used for power distribution, control, and communication. With a wide range of cable end caps available on the market, understanding their specifications and differences is essential for selecting the right product for your. These end caps, also known as cable tray terminations, play a crucial role in ensuring the safety and integrity of your cable systems by providing a secure and professional finish to cable trays.