M.E.2 Cable Tray Installation
The M.E.2 wire cable tray is easy to install and efficiently provides cable management and protection for cables. The cable tray straight and junction sections are easily joined together using installer friendly splice washers, or time saving splice connection loops. Straight trays can be cut to shorter lengths using an off-set blade bolt cutter tool. Vertical and horizontal bends are easily made at the installation site by cutting and removing wires. It is suggested that a cable tray run be started at a junction location, and extend outward.
Connection of Adjacent Tray Sections
Splice Washer Kit Installation Guide
|Tray bottom splice washer shown||Position splice washers on the tray sides and bottom as shown|
Position the splice washers on each tray side and bottom as shown with the 1/4-20 hex nut on the outside of the tray per recommended quantity. Evenly space the Splice Washers along the tray bottom width.
Tray Splice Connection Loop Installation (use only for tray widths 12" or less)
Splice connection loops are used to connect adjacent tray sections as time saving alternative to use of splice washers for cable trays 12" wide or less. Position one splice connect loop on each side of the cable tray with hex nut on the outside of the tray as shown. Ensure that square washer fits inside of tray end wire. When the 5/16" - 18 carriage bolt and nut are securely tightened and electrical ground continuity is established between the adjacent tray sections.
Guidelines for Cutting Straight Tray Sections
When it is necessary to cut a tray section to a shorter length on site, it is recommended to use a side action bolt cutter with off-set blades. Cut the wire on an angle away from the new cut wire end to reduce cutting burrs. With the tray section placed with its open side down, cut each longitudinal wire at an approximately 54 degree angle as close as possible so that cut end does not extend past the new end cross wire. Remove any sharp burrs that might damage the cable insulation.
Can be easily made at the installation site by cutting away all the side wires from one grid section location where the desired bend is to be made as shown. Bend the straight tray to the desired radius. For more gradual bends, cut away alternate grid section side wires along the length of tray to be bent.
Can be made by cutting out the side and bottom wires of alternating grid sections, while leaving the opposing side wires intact. Bend the remaining side wires to the desired radius, and clamp together each remaining vertical cross wires with a splice washer.
Grounding and Bounding
NEC article 250 for power, and data communication applications requires cable trays to be grounded and bonded. It is recommended that a U.L. listed split bolt, such as a #2 connector, be used as a bonding jumper to connect a properly sized ground conductor to each tray section when required by code. Usage of either splice washer kits or connection loops to connect adjacent tray sections provides an electrical ground path connectivity.
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