The main components of a cable tray system include tray sections, fittings, supports, and accessories. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in. Hubbell Wiring Device-Kellems and Hubbell Premise Wiring are divisions of Hubbell Incorporated, a U. Hubbell's strength is demonstrated by a long-standing reputation for supplying reliable. Establishing partnerships with cus-tomers is a top priority for OBO, and OBO staff are available to support customers in all aspects of their pro-jects, including products, installation and planning advice. This is because we not only supply our customers with products and solutions, which.