UL 2239-2015 pdf download

UL 2239-2015 pdf download.Hardware for the Support of Conduit,Tubing, and Cable.
8.2.5 Each assembly shall be subjected to a pull force for 5 mm. applied froni the threaded stud or product being supported from the BEAM cii. For a combination device that includes a SEAM, the force shall be applied to the from the threaded stud or product being directly supported. The force shall be three times the manulacturer’s marked LOAD Where a LOAD RATI is not provided, a force in accordance with Tables 6 — 9 for the largest trade size conduit or tubing for which the damp Is rated shall be applied.
9 Product Testing for STANDOFFS
9.1 Mold stress
9.1.1 There shall not be a dimensional change greater than 5 percent in a nonmetallic STANDOFF after being conditioned in an air-circuLating oven for 168 h at 112 ±1 CC (234 ±2 °F).
9.2 Voltage withstand
9.21 A STANDF shall be capable of withstanding an ac voltage of 1.0 kV without breakdown for a period of 1 mm at a temperature of 23 ±5 °C (73 ±10 °F). The STAPOFF shall be installed to a steel stud in the intended manner. Voltage shall be applied to a metal mandrel that is held in place by the STANDOFF. The voltage shall be applied through an electrode attached to the steel stud with the mandrel connected to ground.
10 Product Testing for oiscro ausieas
10.1 General
10.1.1 In addition to the requirements In Clause 5, m’moitcro susi*ios shall comply with Clauses 10.2— 10.5.
10.1.2 After performing the test in described In Clauses 10.2— 10.5. none of the six samples of PTECTOi &jsHuos shall be pierced or have encroaching burrs. A material that has been found in compliance with the following Clauses is acceptable for other bushing ranges without testing.
10.2 Assembly preparation
10.2.1 Three holes shall be bored into the wider side of two separate 2 x 4 spruce wood studs a minimum 610 mm (24 in) long. The diameter of the ho’es shall be the sniallest of the range of the BUSHING PROTECTORS according to the manufacturer’s instructions. The circumference of the holes shall be at 25 mm (1 in) from the front of the stud. No. 6 drywall screws 41.3 mm (1-518 in) long, not of the self-drilling type shall be used. Holes shall be at least 100 mm (4 in) apart from each other.
10.2.2 The screw specified in Clause 10.2.1 shall be driven until the tip of the screw is flush with the inside of the bore hole. The PPOTtCT BusHING shall then be inserted with the joint facing the wall, or in accordance with the manufacturer’s instructions.
10.3 Dislodge test
10.3.1 The PROTECTOR euso shall not be removable without the use of a tool. If me manufacturer’s instructions includes a range of hole sizes in which the protector bushing can be installed, the test shall be carried out on the smallest and largest hole sizes in the range.
10.4 Test sequence
10.4.1 The screw shall be driven by means of a corded screw gun with variable torque capabifity for no more than 4 seconds, with the screw gun operating at a rotational speed greater than 500 rpm and set at maximum torque. The PROTECTOR BUSHING shall be considered In compliance with Clause 10.1.2 if the screw gun turns freely due to shearing of the threads formed in the wood stud.
10.4.2 The PROTECT BUSHING Is no( considered to comply with Clause 10.1.2 ii the screw penetrates through the wall of the PROTECTOR BUSHING,
10.5 Inspection
10.5.1 The screws shall be withdrawn. The PROTECTOR BUSiWJG shall be removed for visual inspection.
11 Markings
11.1 Markings shall be permanent, legible, and visible after the product is installed. The following types of markings o the equivalent are permanent:
a) Etched,
b) Molded,
C) Die stamped, or
d) Indelibly stamped on a pressure sensitive label secured by adhesive and complying with UL 969 or CSA C22.2 No. 0.15.
11.2 A marking in addition to a required marking shall not conflict with or be able to be confused with a required marking.