• UL 943 : 5

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    GROUND-FAULT CIRCUIT-INTERRUPTERS

    Available format(s):  Hardcopy

    Superseded date:  01-02-2018

    Language(s): 

    Published date:  17-05-2016

    Publisher:  Underwriters Laboratories

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    Table of Contents - (Show below) - (Hide below)

    Preface
    1 Scope
    2 Normative References
    3 Definitions
    4 General
    5 Construction
    6 Tests
    7 Markings
    8 Installation Instructions
    SUPPLEMENT SA - OPTIONAL 10 KA SHORT CIRCUIT CURRENT TEST
                    FOR OUTLET-BOX TYPE GROUND-FAULT
                    CIRCUIT-INTERRUPTERS
    Annex A (normative) - Reference Standards
    Annex B (informative) - French Translations and Markings
    Annex C (informative) - Spanish Translations and Markings
    Annex D (informative) - Reference Publications
    Annex E (Normative in Canada and the United States; informative
            in Mexico) - Installation Instructions - Configuration
            Drawings

    Abstract - (Show below) - (Hide below)

    This revision of the Standard for Safety for Ground-Fault Circuit-Interrupters, ANSI/UL 943, includes the following changes in requirements: Expansion of Auto-Monitoring and End of Life Requirements to All Types of GFCIs Addition of Requirements for Programmable Components Improving the Auto-Monitoring Function of Permanently Connected Ground-Fault Circuit Interrupters

    Scope - (Show below) - (Hide below)

    1.1 This Standard applies to Class A, single- and three-phase, ground-fault circuit-interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the National Electrical Code (NEC), ANSI/NFPA 70, the Canadian Electrical Code, Part I, and Electrical Installations (Use), NOM-001-SEDE.

    General Product Information - (Show below) - (Hide below)

    Development Note Also numbered as ANCE NMX-J-520. (03/2006) Also numbered as CSA C22.2.144.1. (06/2016)
    Document Type Standard
    Publisher Underwriters Laboratories
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    IEEE C62.42 : 2005 APPLICATION OF COMPONENT SURGE-PROTECTIVE DEVICES FOR USE IN LOW-VOLTAGE [EQUAL TO OR LESS THAN 1000 V (AC) OR 1200 V (DC)] CIRCUITS
    CAN/CSA-C22.2 NO. 60950-22:17 Information technology equipment - Safety - Part 22: Equipment to be installed outdoors (Binational standard with UL 60950-22)
    NFPA 1901:2016 AUTOMOTIVE FIRE APPARATUS
    NFPA 73 : 2016 ELECTRICAL INSPECTIONS FOR EXISTING DWELLINGS
    ANSI Z83.21 : 2016 COMMERCIAL DISHWASHERS
    CSA C22.2 No. 5 : 2013 MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES
    C22.2 NO. 243-17 Vacuum cleaners, blower cleaners, and household floor finishing machines (Binational standard with UL 1017)
    C22.2 NO. 236-15 Heating and cooling equipment (Bi-national standard with UL 1995)
    CSA C22.2 No. 167 : 2017 HOUSEHOLD DISHWASHERS
    SAE J 2891 : 2015 AUXILIARY POWER UNIT ELECTRICAL INTERFACE REQUIREMENTS FOR CLASS EIGHT TRUCKS
    UL 60950-22 : 2 INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 22: EQUIPMENT TO BE INSTALLED OUTDOORS
    NFPA 70E : 2018 ELECTRICAL SAFETY IN THE WORKPLACE
    UL 943C : 2 SPECIAL PURPOSE GROUND-FAULT CIRCUIT-INTERRUPTERS
    ANSI/AIHA/ASSP Z9.9-2010 PORTABLE VENTILATION SYSTEMS
    UL 486E : 5 EQUIPMENT WIRING TERMINALS FOR USE WITH ALUMINUM AND/OR COPPER CONDUCTORS
    ASTM F 2666 : 2016 : REDLINE Standard Specification for Aboveground Portable Pools for Residential Use
    SAE J 2698 : 2014 PRIMARY SINGLE PHASE NOMINAL 120 VAC WIRING DISTRIBUTION ASSEMBLY DESIGN - TRUCK AND BUS
    CSA C22.2 No. 178.1 : 2014 TRANSFER SWITCH EQUIPMENT
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    ASTM E 2345 : 2004 Standard Practice for Investigating Electrical Incidents (Withdrawn 2004)
    UL 498 : 16ED 2017 ATTACHMENT PLUGS AND RECEPTACLES
    NFPA 70 HDBK : 2017 NATIONAL ELECTRICAL CODE HANDBOOK
    UL 508A:3ED 2018-04 Industrial Control Panels
    UL 1647 : 6 MOTOR-OPERATED MASSAGE AND EXERCISE MACHINES
    NFPA 70B : 2016 RECOMMENDED PRACTICE FOR ELECTRICAL EQUIPMENT MAINTENANCE
    CSA C22.2 No. 168 : 2016 COMMERCIAL DISHWASHERS
    IEEE 3004.5 : 2014 RECOMMENDED PRACTICE FOR THE APPLICATION OF LOW-VOLTAGE CIRCUIT BREAKERS IN INDUSTRIAL AND COMMERCIAL POWER SYSTEMS
    UL 1431 : 3 PERSONAL HYGIENE AND HEALTH CARE APPLIANCES
    CSA C22.2 No. 60745.1 : 2007 : INC : UPD 2 : 2011 : FR HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    UL 1727:5ED 2012-05 Commercial Electric Personal Grooming Appliances
    CSA C22.2 No. 60745.1 : 2007 : INC : UPD 3 : 2013 : R201200 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    UL 1447 : 6 ELECTRIC LAWN MOWERS
    UL 60079-0 : 6 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
    CSA C22.2 No. 60745.1 : 2007 : R2012 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    UL 1563 : 6 ELECTRIC SPAS, EQUIPMENT ASSEMBLIES, AND ASSOCIATED EQUIPMENT
    UL 82 : 9 ELECTRIC GARDENING APPLIANCES
    CAN/CSA-C22.2 No. 62841-1 : 2015 ELECTRIC MOTOR-OPERATED HAND-HELD TOOLS, TRANSPORTABLE TOOLS AND LAWN AND GARDEN MACHINERY - SAFETY - PART 1: GENERAL REQUIREMENTS
    UL 541 : 9ED 2016 REFRIGERATED VENDING MACHINES
    CSA C22.2 No. 60745.1 : 2007 : INC : UPD 2 : 2011 : R2012 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    CSA C22.2 No. 60745.1 : 2007 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    UL 1008A : 2 TRANSFER SWITCH EQUIPMENT, OVER 1000 VOLTS
    UL 1090 : 7 ELECTRIC SNOW MOVERS
    UL 3703 : 3 SOLAR TRACKERS
    UL 60745-1 : 4 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    CSA C22.2 No. 60745.1 : 2007 : INC : UPD 2 : 2011 HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    CSA C22.2 No. 60745.1 : 2007 (R2017) HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS - SAFETY - PART 1: GENERAL REQUIREMENTS
    CSA C22.2 NO. 178.3:17 Transfer switch equipment, over 1000 volts (Binational standard with UL 1008A)
    UL 859 : 2011 HOUSEHOLD ELECTRIC PERSONAL GROOMING APPLIANCES
    CAN/CSA-C22.2 NO. 281.2-12 (R2017) Standard for safety for personnel protection systems for electric vehicle (EV) supply circuits: Particular requirements for protection devices for use in charging systems (Tri-national standard, with UL 2231-2 and NMX-J-668/2-ANCE)
    UL 507 : 2010 ELECTRIC FANS
    CSA C22.2 No. 281.2 : 2012 : INC : UPD 2 : 2016 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: PARTICULAR REQUIREMENTS FOR PROTECTION DEVICES FOR USE IN CHARGING SYSTEMS
    UL 873 : 2012 TEMPERATURE-INDICATING AND REGULATING EQUIPMENT
    MIL PRF 44259 : E LIGHT SET, PORTABLE, FLUORESCENT
    UL 399 : 8 DRINKING-WATER COOLERS
    UL 962A : 4 FURNITURE POWER DISTRIBUTION UNITS
    UL 979 : 2 WATER TREATMENT APPLIANCES
    UL 1363 : 4 RELOCATABLE POWER TAPS
    UL 1995 : 5 HEATING AND COOLING EQUIPMENT
    UL 1559:5ED 2011-03 Insect-Control Equipment - Electrocution Type
    UL 1310 : 7 CLASS 2 POWER UNITS
    UL 458 : 6 POWER CONVERTERS/INVERTERS AND POWER CONVERTER/INVERTER SYSTEMS FOR LAND VEHICLES AND MARINE CRAFTS
    UL 921 : 7 COMMERCIAL DISHWASHERS
    UL 1083 : 6 HOUSEHOLD ELECTRIC SKILLETS AND FRYING-TYPE APPLIANCES
    CAN/CSA-C22.2 NO. 281.1-12 (R2017) Standard for safety for personnel protection systems for electric vehicle (EV) supply circuits: General requirements (Tri-national standard, with UL 2231-1 and NMX-J-668/1-ANCE)
    UL 710B : 2 RECIRCULATING SYSTEMS
    CSA C22.2 No. 60335-1:2011 SAFETY OF HOUSEHOLD AND SIMILAR APPLIANCES - PART 1: GENERAL REQUIREMENTS
    UL 963 : 4ED 2016 SEALING, WRAPPING AND MARKING EQUIPMENT
    UL 2231-2 : 2 PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: PARTICULAR REQUIREMENTS FOR PROTECTION DEVICES FOR USE IN CHARGING SYSTEMS
    UL 1042 : 5 ELECTRIC BASEBOARD HEATING EQUIPMENT
    UL 1776 : 3 HIGH-PRESSURE CLEANING MACHINES
    CSA C22.2 No. 281.2:2012 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: PARTICULAR REQUIREMENTS FOR PROTECTION DEVICES FOR USE IN CHARGING SYSTEMS
    UL 122 : 5 PHOTOGRAPHIC EQUIPMENT
    UL 2021 : 4 FIXED AND LOCATION-DEDICATED ELECTRIC ROOM HEATERS
    UL 913 : 8 INTRINSICALLY SAFE APPARATUS AND ASSOCIATED APPARATUS FOR USE IN CLASS 1, 2, 3, DIVISION 1, HAZARDOUS (CLASSIFIED) LOCATIONS
    UL 2231-1 : 2 Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits; Part 1: General Requirements
    UL 1018 : 6 ELECTRIC AQUARIUM EQUIPMENT
    UL 499 : 2014 ELECTRIC HEATING APPLIANCES
    CSA C22.2 No. 281.1 : 2012 : INC : UPD 1 : 2015 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: GENERAL REQUIREMENTS
    UL 283 : 3 AIR FRESHENERS AND DEODORIZERS
    UL 877 : 4 CIRCUIT BREAKERS AND CIRCUIT-BREAKER ENCLOSURES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS
    UL 749 : 2017 HOUSEHOLD DISHWASHERS
    UL 775 : 1998 GRAPHIC ARTS EQUIPMENT
    UL 1081 : 7 SWIMMING POOL PUMPS, FILTERS, AND CHLORINATORS
    CAN/CSA-C22.2 NO. 60335-1:11 (R2016) Safety of household and similar appliances - Part 1: General requirements (Tri-national standard, with NMX-J-521/1-ANCE and UL 60335-1)
    UL 60335-1 : 6ED 2016-10 SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - PART 1: GENERAL REQUIREMENTS
    UL 858 : 2016 HOUSEHOLD ELECTRIC RANGES
    UL 67 : 2009 PANELBOARDS
    UL 1008 : 8 TRANSFER SWITCH EQUIPMENT
    UL 347 : 6 MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTRES
    UL 111 : 5 MULTIOUTLET ASSEMBLIES
    UL 1017 : 2010 VACUUM CLEANERS, BLOWER CLEANERS, AND HOUSEHOLD FLOOR FINISHING MACHINES
    UL 962 : 4 HOUSEHOLD AND COMMERCIAL FURNISHINGS
    UL 430 : 8 WASTE DISPOSERS
    UL 1640 : 4 PORTABLE POWER-DISTRIBUTION EQUIPMENT
    UL 489 : 2013 MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES, AND CIRCUIT-BREAKER ENCLOSURES
    CSA C22.2 No. 281.2 : 2012 : INC : UPD 1 : 2015 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: PARTICULAR REQUIREMENTS FOR PROTECTION DEVICES FOR USE IN CHARGING SYSTEMS
    UL 497C : 2 PROTECTORS FOR COAXIAL COMMUNICATIONS CIRCUITS
    CSA C22.2 No. 281.1:2012 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: GENERAL REQUIREMENTS
    CSA C22.2 No. 281.1 : 2012 : INC : UPD 2 : 2016 STANDARD FOR SAFETY FOR PERSONNEL PROTECTION SYSTEMS FOR ELECTRIC VEHICLE (EV) SUPPLY CIRCUITS: GENERAL REQUIREMENTS
    UL 943B : 3 APPLIANCE LEAKAGE-CURRENT INTERRUPTERS
    UL 197 : 2010 COMMERCIAL ELECTRIC COOKING APPLIANCES
    UL 867 : 5 ELECTROSTATIC AIR CLEANERS
    UL 636 : 2011 HOLDUP ALARM UNITS AND SYSTEMS
    UL 60950-1 : 2 INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS

    Standards Referencing This Book - (Show below) - (Hide below)

    UL 50E : 2 ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS
    UL 50 : 2015 ENCLOSURES FOR ELECTRICAL EQUIPMENT, NON-ENVIRONMENTAL CONSIDERATIONS
    CSA C22.2 No. 5 : 2013 MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES
    CSA C22.2 No. 29 : 2015 PANELBOARDS AND ENCLOSED PANELBOARDS
    C22.1-15 Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations
    CSA C22.2 No. 60065 : 2016 AUDIO, VIDEO AND SIMILAR ELECTRONIC APPARATUS - SAFETY REQUIREMENTS
    UL 498 : 16ED 2017 ATTACHMENT PLUGS AND RECEPTACLES
    CSA C22.2 No. 0.4 : 2004(R2013) BONDING OF ELECTRICAL EQUIPMENT
    UL 83 : 2017 THERMOPLASTIC-INSULATED WIRES AND CABLES
    CSA C22.2 No. 144 : 1991 GROUND FAULT CIRCUIT INTERRUPTERS
    CSA C22.2 No. 0.2 : 2016 INSULATION COORDINATION
    UL 746C : 6 POLYMERIC MATERIALS - USE IN ELECTRICAL EQUIPMENT EVALUATIONS
    UL 1241 : 7 JUNCTION BOXES FOR SWIMMING POOL LUMINAIRES
    UL 489 : 2013 MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES, AND CIRCUIT-BREAKER ENCLOSURES
    UL 969 : 5 MARKING AND LABELING SYSTEMS
    UL 1449 : 4 SURGE PROTECTIVE DEVICES
    UL 508 : 1999 INDUSTRIAL CONTROL EQUIPMENT
    CSA C22.2 No. 65 : 2013 WIRE CONNECTORS
    CSA C22.2 No. 60529 : 2016 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE)
    UL 486E : 5 EQUIPMENT WIRING TERMINALS FOR USE WITH ALUMINUM AND/OR COPPER CONDUCTORS
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    UL 510 : 9 POLYVINYL CHLORIDE, POLYETHYLENE AND RUBBER INSULATING TAPE
    ASTM D 149 : 2009 TEST METHOD FOR DIELECTRIC BREAKDOWN VOLTAGE AND DIELECTRIC STRENGTH OF SOLID ELECTRICAL INSULATING MATERIALS AT COMMERCIAL POWER FREQUENCIES
    CSA C22.2 No. 18 : 0 OUTLET BOXES, CONDUIT BOXES, FITTINGS AND ASSOCIATED HARDWARE
    CSA C22.2 No. 0.15 : 2015 ADHESIVE LABELS
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    UL 224 : 6 EXTRUDED INSULATING TUBING
    ASTM D 648 : 2016 Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position
    C22.2 NO. 75-17 Thermoplastic insulated wires and cables (Trinational standard with UL 83 and NMX-J-010-ANCE-2017)
    ASTM D 257 : 2014 : REDLINE Standard Test Methods for DC Resistance or Conductance of Insulating Materials
    CSA C22.2 No. 14 : 2013 INDUSTRIAL CONTROL EQUIPMENT
    CSA C22.2 No. 89 : 2015 SWIMMING-POOL LUMINAIRES, SUBMERSIBLE LUMINAIRES, AND ACCESSORIES
    UL 486A-486B : 2 WIRE CONNECTORS
    CSA C22.2 No. 94.2 : 2015 ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS
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