They support up to 280 lbs. per foot (based on a tray support, such as hanging clamps or a hanging bar, every 8 feet). Hanging bars have a slotted strut channel that you suspend from 1/2"-13 threaded rod;. 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. When developing our cable support OBO can offer reliable solutions for systems, three attributes are at the routing and fastening cables securely core of what we do: efficiency, resil- for each of these installation challeng-ience and safety. es in the industrial environment. Our cable support. 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. Whether you're looping over unistrut or attaching to 1/4-20 or 3/8-16 deck studs, our gated hook lock-on system snaps securely to most wire mesh, ladder, trough, channel, and. For ease of installation and accessibility, lay cable and hose in trays instead of pulling it through conduit or raceway. These tray systems allow excellent ventilation and prevent sagging while routing.