UL 5B:2019 pdf download.Strut-Type Channel Raceways and Fittings.
4.9 The closure strip (cover) of a strut-type channel raceway or fitting shall be constructed so that the use of a tool (such as the prying action of a screwdriver) or two simultaneous deliberate actions are necessary for their removal for gaining access to internal areas of the raceway after installation,
5 FItlings
5.1 A fitting provided with means for the support of a fixture shall have strength and rigidity for the purpose as evaluated by means of the tests described in the Fixture Support Test, Section 10. A nipple intended only for the connection of a lampholder or the like is not to be considered means for the support of a fixture.
5.2 A fitting shall be secured to the raceway channel (base) by a positive securement means such as screws, rivets, or clamps.
Exception: A fitting may be secured by other than a positive securement means if It complies with the Fault Current Test, Section 15.
6 Wiring Devices
6.1 A receptacle shall be mounted by a positive means such as at least two screws or rivets.
Exception: When a snap-lit or other non-positive securement means is used it shall comply with the Receptacle Secureness Test, Section 11.
6.2 A receptacle shall comply with all of the applicable requirements in the Standard for Attachment Plugs and Receptacles, UL 498. A flush switch shall comply with all of the applicable requirements in the Standard for General-Use Snap Switches. UL 20.
7 Grounding and Bonding
7.1 Electrical continuity shall be provided between all metal parts of the strut-type channel raceway system when the parts are installed in the intended manner. See the Electrical Resistance Test, Section 14
7.2 Each connection between adjacent raceway sections and between raceway sections and fittings of a strut-type channel raceway system shall not rely upon snap or friction fit alone for electrical continuity. A means of positive securement shall be provided.
5 FItlings
5.1 A fitting provided with means for the support of a fixture shall have strength and rigidity for the purpose as evaluated by means of the tests described in the Fixture Support Test, Section 10. A nipple intended only for the connection of a lampholder or the like is not to be considered means for the support of a fixture.
5.2 A fitting shall be secured to the raceway channel (base) by a positive securement means such as screws, rivets, or clamps.
Exception: A fitting may be secured by other than a positive securement means if It complies with the Fault Current Test, Section 15.
6 Wiring Devices
6.1 A receptacle shall be mounted by a positive means such as at least two screws or rivets.
Exception: When a snap-lit or other non-positive securement means is used it shall comply with the Receptacle Secureness Test, Section 11.
6.2 A receptacle shall comply with all of the applicable requirements in the Standard for Attachment Plugs and Receptacles, UL 498. A flush switch shall comply with all of the applicable requirements in the Standard for General-Use Snap Switches. UL 20.
7 Grounding and Bonding
7.1 Electrical continuity shall be provided between all metal parts of the strut-type channel raceway system when the parts are installed in the intended manner. See the Electrical Resistance Test, Section 14
7.2 Each connection between adjacent raceway sections and between raceway sections and fittings of a strut-type channel raceway system shall not rely upon snap or friction fit alone for electrical continuity. A means of positive securement shall be provided.
