Do fiberglass cable trays require jumper wires
Whether you need extra wires (jumpers) depends on if your connecting plates are tested for grounding. If the plates are UL Classified, they are strong enough to carry electricity safely by themselves. Table 318-7(b)(2) "Metal Area Requirements for Cable Trays Used as Equipment. Standard Snap Track splices, tee's, crosses, and elbows are also UL Classified as an EGC component and are. A bonding jumper cable tray ensures electrical continuity across tray sections, fittings, and splices, meeting NEC 250. It provides a reliable path for fault currents, maintaining grounding and reducing the risk of electric shock or equipment damage.
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