![]() ![]() Once there, click on their link to free access to the 2020 NEC ® edition of NFPA 70. See the actual NEC ® text at NFPA.ORG for the complete code section. Important: For plastic stop nut designs, tighten hardware, then loosen 1/2 turn”.īelow is a preview of the NEC ®. ![]() H, 1 Pair Pair By B-Line (Eaton) (9A1014) At Graybar, Your Trusted Resource For Cable Tray. The nuts may have a stopping device (plastic stop nut). Shop Cable Tray Fitting, Expansion Splice Plate, Aluminum, 4 In. “ Special hardware is supplied with expansion splice plates. Our Snap Track splices make the cable tray system easy to install. In the NEMA document, table 3.2 provides the Maximum Spacing between Expansion Joints that Provide for 250 mm (1 in) Movement. According to the document, there are four basic types of cable tray connectors including rigid, expansion, adjustable, and reducer. (Bonding jumpers ommitted for clarity) Step 4. furnished in pairs with hardware included. There are no specific measurements or calculations provided in the NEC ® to determine if or how many expansion splice plates are required but the installation instructions for the cable tray should provide guidance.Īnother helpful document is NEMA Publication VE 2-2013 Cable Tray Installation Guidelines. Furnished in pairs (2) with (4) 9TBN302 nut & bolt assemblies and (4) 9SEB519 shoulder bolts, washers and nyloc hex nuts. Cable tray with heavy duty expansion splice plates installed. designed to connect two cable channel sections together while allowing for expansion at joint. In the 2020 NEC ® a public input (code change proposal) was accepted to add requirements for thermal expansion and contraction in a spliced cable tray. Code Change Summary: New code section with requirements for expansion splice plates in a cable tray. ![]()
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