The use and installation of cable trays is covered by legally enforceable OSHA regulations in 29 CFR 1910. In addition, this document contains several references to provisions of the National Electric Code. of each run, and at other points to mai ection 07 84 00 to sustain ratings when passing cable tray throu er equipment grounding conductor through entire length of tray; bond to ea NEC Section 318-6(a) states that cable tray is not required to be mechanically continuous but it must be electrically continuous and bonding shall be in accordance with NEC Section 250-75. This is a description of how to select, install, and support these metal or plastic frames, on which electrical wires are installed. 305(a)(3) and within various provisions of the National Electric Code (NEC). When properly. (i) Metal raceways, cable trays, cable armor, cable sheath, enclosures, frames, fittings, and other metal noncurrent-carrying parts that are to serve as grounding conductors, with or without the use of supplementary equipment grounding conductors, shall be effectively bonded where necessary to.