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UL 5B-2019 pdf free download
UL 5B-2019 pdf free download.Strut-Type Channel Raceways and Fittings.
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-fit 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
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.
Exception: If is not prohibited that a metal closure strip (cover) of a strut-type channel raceway or fitting rely upon a snap fit to achieve electrical continuity to the metal base. A receptacle mounted on a metal cover shall not rely upon the cover’s snap fit for grounding continuity.
7.3 A strut-type channel raceway system shall be provided with means for grounding. This shall be provided at all points or with fittings intended for connection to a metallic wiring system.
7.4 A strut-type channel raceway system intended for connection to a nonmetallic wiring system shall have a tapped hole adjacent to each wire entry point intended for use with a No. 10-32 or larger grounding screw. At least two full threads shall be provided in metal into which screws are to be threaded.UL 5B-2019 pdf free download.
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