UL 1653:2014 free download

UL 1653:2014 free download Electrical Nonmetallic Tubing
1 Scope
1.1 This Standard applies to corrugated electrical nonmetallic tubing (ENT) and mechanically-attachedfittings, for use in accordance with C22.1,Canadian Electrical Code, Part l (CEC), and NFPA 70 NationalElectrical Code (NEC). These requirements also apply to mechanically-attached fittings integral with anoutlet box.
1.2 Products covered by this Standard are intended for use:
a) at a maximum continuous operating temperature of 75°C (167°F);b) at a maximum ambient temperature of 50°C (122°F);
c)in attics provided that the ENT is installed no higher than 900 mm (3 ft) above the bottom ofthe ceiling joist, and the ENT material is rated minimum 60°℃ (140°F); and
d) underground (direct burial),in Canada only.
1.3 This Standard does not apply to fittings that are intended to be joined by solvent cement.Solvent-attached fittings are covered by UL 651 or CSA C22.2 No.211.2.Solvent-attached fittings integralwith an outlet or flush device box are covered by UL 514C or CAN/CSA-C22.2 No.85.
2 Definitions
2.1 The following definitions apply to this Standard:
Adapter – a fitting used to terminate the ENT at an electrical enclosure.Coupling – a fitting intended to connect two lengths of ENT.
Coupling, Split-Type – a two-piece coupling normally used to connect two lengths of ENT afterconductors have been pulled.
Electrical Nonmetallic Tubing (ENT) – a pliable corrugated raceway of circular cross-section, capable ofbeing bent by hand with a reasonable force, but without other assistance.
Fitting, Mechanically Attached – a component in the ENT system used to terminate a length of ENT andsecured to the ENT by means other than solvent cement.
Fitting,Solvent-Attached – a component in the ENT system used to terminate a length of ENT andsecured to the ENT by solvent cement.
3 General
3.1 Components
3.1.1 Except as indicated in Clause 3.1.2, a component of a product covered by this Standard shallcomply with all the requirements for that component.A component shall comply with both the CanadianStandards Association and Underwriters Laboratories lnc. Standards for the component.
3.1.2 A component is not required to comply with a specific requirement that:
a) lnvolves a feature or characteristic not required in the application of the component in theproduct covered by this standard, or
b) ls superseded by a requirement in this standard.
3.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.
3.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions，such as certaintemperatures not exceeding specified limits,and shall be used only under those specific conditions.
3.2 Reference publications
3.2.1 For undated references to Standards,such reference shall be considered to refer to the latestedition and all revisions to that edition up to the time when this Standard was approved.For datedreferences to Standards, such reference shall be considered to refer to the dated edition and all revisionspublished to that edition up to the time the Standard was approved.