1 Scope

1.1 This standard specifies the requirements for cord sets and power-supply cords employing molded-on or assembled-on fittings, rated 600 V maximum, and intended for use in non-hazardous locations in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 This Standard also specifies the requirements for molded-on general-use attachment plugs and cord connectors.

1.3 This Standard also specifies the requirements for hospital grade attachment plugs and cord connectors.

1.4 This Standard also specifies the requirements for cord restraint devices.

1.5 These requirements do not cover cord sets intended for temporary outdoor use – not to exceed 90 days – with outdoor equipment, Christmas-tree, and other seasonal decorative-lighting outfits. Such devices are covered by the Standard for Outdoor Seasonal-Use Cord-Connected Wiring Devices, UL 2438.

• Cover
• Transmittal
• Table of Contents
• Body
• INTRODUCTION
• 1 Scope
• 2 Components
• 3 Units of Measurement
• 4 Undated References
• 5 Definitions
• CONSTRUCTION
• 6 Fittings – General
• 6.1 Configurations and dimensions
• 6.2 Flammability
• 6.2A Combustible materials
• 6.3 Accessibility of live parts
• 6.4 Connection to fittings
• 6.5 Identification and wiring
• 6.6 Treatment of cord-conductor coverings
• 6.7 Outdoor-use fittings
• 7 Plugs
• 7.1 Plugs
• 7.2 Attachment plug grip
• 7.3 Hospital grade attachment plugs
• 8 Cord Connectors
• 8.1 General
• 8.2 Holes, indentations, and projections
• 8.3 Improper insertion
• 8.4 Mismating
• 8.5 Cord connector – outdoor
• 8.6 Hospital grade connectors
• 9 Other Components
• 9.1 General
• 9.2 Metal strain relief clamps
• 9.3 Switches
• 9.4 Switches – outdoor
• 9.5 Current taps and pendant switches
• 9.6 Through-cord heating-pad switch
• 9.7 Fittings intended to accommodate overcurrent protective devices
• 9.8 Supplementary circuit
• 9.9 Devices employing remote control features
• 9.10 Overcurrent protection
• 9.11 Cord restraint devices
• 9.12 Electronic circuitry
• 10 Assembly
• 10.1 Power-supply cords
• 10.2 Special-use power-supply cords
• 10.3 Recreational vehicle power-supply cords
• 10.4 Mobile home power-supply cords
• 10.5 Range and dryer power-supply cords
• 10.6 Range and dryer power-supply cord kits
• 10.7 Extension cord sets
• 10.8 Adapter cord sets
• 10.9 Special-use cord sets
• 10.10 Vacuum cleaner and floor-finishing machine cord sets
• 10.11 Recreational vehicle cord sets
• 10.12 Hospital grade power-supply cords, extension cords, and cord sets
• 10.13 Cord sets with appliance plugs
• 10.14 Cord sets with flatiron plugs
• 10.15 Cord sets for appliances rated 50 W or less
• 10.16 Replacement-use with nonstandard polarization
• PERFORMANCE
• 11 Attachment plugs and cord connectors
• 11.1 Conductor secureness test
• 11.2 Security of insulation test
• 11.3 Strain relief test
• 11.4 Dielectric voltage-withstand test
• 11.5 Insulation resistance test
• 11.6 Accelerated aging test
• 11.7 Crushing test
• 11.8 Impact resistance test
• 11.9 Flexing test
• 11.10 Jacket retention test
• 11.11 Adhesion test
• 11.12 Cycling heat test
• 12 Tests for Attachment Plugs
• 12.1 Security of blades and pins test
• 12.2 Temperature test
• 12.3 Plug grip test
• 12.4 Blade pull test at elevated temperature
• 12.5 Abrupt pull test
• 13 Tests for Range and Dryer Power-Supply Cord Kits
• 13.1 Strain relief test
• 13.2 Accelerated aging test
• 13.3 Push-back force test
• 14 Tests for cord connectors
• 14.1 Depth of cavity test
• 14.2 Conditioning cycles for blade retention test
• 14.3 Retention of blades test
• 14.4 Overload test
• 14.5 Temperature test
• 14.6 Retention of blades test (repeated)
• 14.7 Resistance to arcing test
• 14.8 Improper insertion test
• 14.9 Low-temperature insertion test
• 14.10 Random drop test
• 14.11 Closure of openings test
• 15 Tests for Flatiron and Appliance Plugs
• 16 Test for Permanence of Warning Tag
• 16.1 Cords other than outdoor type
• 16.2 Outdoor-type (W) cords
• 16.3 Oil-resistant cords
• 16.4 Test procedure
• 16.5 Evaluation
• 17 Tests for Overcurrent Protective Devices
• 17.1 General
• 17.2 Calibration test
• 17.3 Short-circuit tests for all products with overcurrent protection
• 17.4 Short-circuit test for fuses
• 17.5 Abnormal test
• 17.6 Water exclusion test for enclosures of outdoor-use products
• 18 Hospital Grade Molded-On Plugs and Connectors
• 18.1 General
• 18.2 Strain relief tests
• 18.3 Bonding (grounding) pin retention – hospital grade cord connector
• 18.4 Attachment plug connection and separation – hospital grade cord connector
• 18.5 Grounding contact temperature hospital grade cord connector
• 18.6 Ground resistance hospital grade cord connector
• 18.7 Crushing hospital grade attachment plug and cord connector
• 18.8 Impact hospital grade attachment plug and cord connector
• 18.9 Mechanical drop hospital grade attachment plug and cord connector
• 19 Tests for Cord Restraint Devices – Temperature Test
• 19A Tests for Electrical Components
• MARKING
• 20 General
• 21 Extension Cord Sets
• 21.1 General
• 21.2 Polarization
• 21.3 Warning tag
• 21.4 Indoor-use extension cord sets
• 22 Outdoor-Use Extension Cord Sets
• 23 Adapter Cord Sets
• 24 Cord Restraint Devices
• 25 Recreational Vehicle and Mobile Home Applications
• 26 Power-Supply Cords – Shielded
• 27 Hospital Grade Attachment Plugs, Connectors and Hospital Grade Extension Cords
• 28 Range and Dryer Power-Supply Cord Kits
• 29 Power-Supply Cords for Replacement Use
• 30 Special-Use Power Supply Cords
• 31 Special Use Cord Sets
• 32 Special Use Cord Sets Intended for Replacement Use
• TAMPER RESISTANT FEATURES
• Appendix A – Component Standards Reference List
• Appendix B – Illustrative Definitions