Galvanized cable trays are not conductive
Composite trays are non-conductive, meaning they do not carry electrical current if cable insulation fails. The tray may require earthing, bonding, or neither, depending on whether it qualifies as an exposed-conductive-part or an extraneous-conductive-part. en completely installed, without damage either to conductors or structural system use maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray.
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