1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): XBYSStandard Number: UL 1363Standard Title: Standard for Relocatable Power TapsEdition Date: October 6, 2014Edition Number: 4Section / Paragraph Reference: S
3、ections 1 (Scope); 3 (Glossary); Sections 11.1.7, 12(Construction) and 34 (Performance)Subject: Class 2 LeadDECISION:1 Scope1.1 These requirements cover indoor use cord and plug connected relocatable power taps (RPT) rated250 V AC or less and 20 Amperes or less. A RPT may include an integral Class 2
4、 power supply with anintegral lead and/or connector(s) output. RPT are for use as a movable power supply connection for cordand plug connected electrical utilization equipment in accordance with the National Electric Code, NFPA70.3 Glossary3.2.1 CLASS 2 LEAD - Consists of a factory-made, power-limit
5、ed cable with a connector at one end. Theother end is secured within the housing or enclosure of the RPT. The connector is intended for connectionto the Class 2 separable interface.3.2.2 CLASS 2 SEPARABLE INTERFACE A separable component containing Class 2 low-voltageconnector(s) only (such as Univer
6、sal Serial Bus (USB) connector(s).3.11 RELOCATABLE POWER TAP (RPT) -p) Provided with an integral Class 2 lead and mating Class 2 separable interface, or an integralpower supply with one or more Class 2 output connector(s).11.1.7 Class 2 Lead11.1.8 A Class 2 lead may be one of the following types:a)
7、Type CL2 cable in accordance with the Standard for Power-Limited Circuit Cables, UL 13b) An appliance wiring material with a maximum length of 10 feet (3.5 m), minimum of 26 AWG,rated minimum VW-1 flammability and minimum 300 V, in accordance with the Standard forAppliance Wiring Material, UL 758.11
8、.1.9 One end of a Class 2 lead shall be either molded-on or permanently attached to the RPT housingor enclosure.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11.1.10 The other end of a Class 2 lead shall terminate in a connector capable of b
9、eing inserted into themating connector of the Class 2 separable interface.11.1.11 Permanently attached can be achieved by crimping, welding, riveting, or equivalent to render theconnector non-rewireable.12 Strain Relief12.1 Strain relief shall be provided so that a mechanical stress on a power-suppl
10、y cord, cord connector,or flexible cord, or Class 2 lead is not transmitted to terminals, splices, or interior wiring. See Strain ReliefTest, Section 34.34 Strain Relief Test34.3 A RPT that is also provided with an integral Class 2 lead shall be additionally subjected to the testingmethod described
11、in 34.2 except the pull values shown in Table 34 shall be applied to the Class 2 lead.Table 34Pull valuesSize of conductor Pull forceAWG (mm2) lbf (N)32 (0.03) 0.5 (2.2)30 (0.05) 1 (4.4)28 (0.08) 2 (8.9)26 (0.13) 4 (17.8)24 (0.20) 6 (26.7)2022 (0.52 0.32) 8 (36)MARKINGS48.23 A Class 2 lead or Class
12、2 separable interface shall be identified as being “Class 2” and marked withthe output electrical rating. The “Class 2” and output electrical rating shall be permanently marked andvisible after installation.RATIONALE FOR DECISION:UL 1363 permits a relocatable power tap to employ a Class 2 power supp
13、ly with low-voltage (such as USBoutputs). The Standard does not address a Class 2 power supply with low-voltage connectors where thelow-voltage connectors extend from the relocatable power tap housing by an insulated lead. The strainrelief pull values are based upon present pull force values for sim
14、ilar types of an insulated leads in theStandard UL 1977 Standard for Power, Control and Signaling Applications.Copyright 2016 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Dec
15、isions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National
16、Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurSTANDARD NUMBER: UL 1363 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FR
17、OM ULany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 1363 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 1363 -4-No Text on This Page
