UL 50:13ED 2015-10-16
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Enclosures for Electrical Equipment, Non-Environmental Considerations
Available format(s)
Hardcopy
Superseded date
29-02-2024
Superseded by
Language(s)
English
Published date
16-10-2015
Publisher
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Preface
1 Scope
2 Units of Measurement
3 Components
4 References
5 Definitions
6 Construction
7 Marking
8 Tests
9 Cabinets and Cutout Boxes
10 Junction and Pull Boxes
Annex A - Standards For Components (Normative)
Annex B - Reference Standards (Normative)
Annex C - Marking (Normative - US Only Requirement)
Annex D - Knockout Dimensions (Informative)
The revision of ANSI/UL 50 dated October 15, 2020 includes the following changes in requirements: Junction and Pull Boxes for Use in Air Handling Spaces; 10.1.1, 10.1.2, Section 10.7 Adhesives Used to Secure Observation Windows; 6.2.1, 6.2.5, 6.2.6, 6.6.1.5, 6.6.1.6, Annex B Add Definitions: Cabinet, Cutout Box, Junction Box, and Pull Box; 5.3.1, 5.4.1, 5.9.1, Annex B Restrictions on Use of Sheet Metals Screws; 10.4.12, Annex B Junction and Pull Boxes Less Than 100 Cubic Inches; 10.6.5, Sections 10.8, 10.9, Figure 14 and Figure 15 Clarification of Annex C for Components Clarification of Closure Opening for Polymeric Materials; 6.6.1.3 New Annex E for Adhesives, Enclosures, Non-mechanical Means of Securement; Annex B Requirements for Encapsulated Enclosures; Annex F Exemption of Crush and Impact Tests if Using Safety or Wire Mesh Glass in Large Openings; 6.2.2, 6.2.3.
| DevelopmentNote |
Also numbered as CSA C22.2.94.1 & NMX-J-235/1ANCE. (09/2007) NEW CHILD REV 1 2020 IS ADDED NOW
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| DocumentType |
Standard
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| Pages |
0
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| ProductNote |
NEW CHILD REV 1 2020 IS ADDED NOW
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| PublisherName |
Underwriters Laboratories
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| Status |
Superseded
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| SupersededBy |
1.1 This standard applies to enclosures for electrical equipment intended to be installed and used in non-hazardous locations in accordance with the Canadian Electrical Code, Part I, CSA C22.1, the provisions of the National Electrical Code, NFPA 70, and the provisions of Mexico's Electrical Installations, NOM-001-SEDE, as follows: a)Enclosures for indoor locations, Types 1, 2, 5, 12, 12K, and 13; and b)Enclosures for indoor or outdoor locations, Types 3, 3X, 3R, 3RX, 3S, 3SX, 4, 4X, 6, and 6P.
| I.S. EN ISO 23553-1:2014 | SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO 23553-1:2014) |
| CSA C22.2 No. 18.1 : 2013 : INC : UPD 1 : 2015 | METALLIC OUTLET BOXES |
| CSA C22.2 No. 27 : 2009 : INC : UPD 1 : 2011 | BUSWAYS |
| CSA C22.2 No. 107.3 : 2014 | UNINTERRUPTIBLE POWER SYSTEMS |
| SAE J2698_201411 | Primary Single Phase Nominal 120 VAC Wiring Distribution Assembly Design—Truck and Bus |
| CSA C22.2 No. 61010.1 : 2012 : INC : UPD 1 :2015 | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| UL 79:10ED 2016-04 | Power-Operated Pumps for Petroleum Dispensing Products |
| NFPA 79 : 2018 | ELECTRICAL STANDARD FOR INDUSTRIAL MACHINERY |
| CSA C22.2 No. 62368-1 : 2014 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS |
| DIN EN ISO 23553-1:2014-09 | Safety and control devices for oil burners and oil-burning appliances - Particular requirements - Part 1: Automatic and semi-automatic valves (ISO 23553-1:2014); German version EN ISO 23553-1:2014 |
| NNN-O-001191 Base Document:1966 | OVEN LABORATORY |
| MIL-W-44167 Revision B:1992 | WASHING MACHINE, LAUNDRY: OPEN END TYPE, TRAILER MOUNTED |
| W-P-115 Revision C:1990 | PANEL, POWER DISTRIBUTION |
| CSA C22.2 No. 61010.1 : 2012 : INC : UPD 1 : 2015 | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| CSA C22.2 No. 5 : 2013 | MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES |
| CSA C22.2 No. 18.1 : 2013 | METALLIC OUTLET BOXES |
| C22.2 NO. 280-16 | Electric vehicle supply equipment (Tri-national standard, with UL 2594 and NMX-J-677-ANCE-2016) |
| SAE J1772_201710 | SAE Electric Vehicle and Plug in Hybrid Electric Vehicle Conductive Charge Coupler |
| UL 429:7ED 2013-11-06 | Electrically Operated Valves |
| UL 508A:3ED 2018-04-24 | Industrial Control Panels |
| UL 1640:4ED 2016-11-14 | Portable Power-Distribution Equipment |
| UL 864:10ED 2014-12-01 | Standard for Control Units and Accessories for Fire Alarm Systems |
| UL 60730-1:5ED 2016-08-03 | Automatic Electrical Controls - Part 1: General Requirements |
| CSA C22.2 No. 111 : 2010 : R2015 | GENERAL-USE SNAP SWITCHES |
| CSA C22.2 No.111 : 2010 | GENERAL-USE SNAP SWITCHES |
| CSA C22.2 No. 111 : 2010 : INC : UPD 1 : 2012 | GENERAL-USE SNAP SWITCHES |
| CSA C22.2 No. 253 : 2016 | MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTRES |
| ANSI C12.7-2014 | American National Standard for Requirements for Watthour Meter Sockets |
| NEMA PB 1:2011 | Panelboards |
| ANSI/NEMA KS 2:2013 | Distribution Equipment Switch Application Guide, A User\'s Reference |
| ANSI C12.17 : 1991 | CARTRIDGE TYPE SOLID STATE PULSE RECORDERS FOR ELECTRICITY METERING |
| ANSI C12.13 : 1991 | ELECTRONIC TIME-OF-USE REGISTERS FOR ELECTRICITY METERS |
| ANSI C12.15 : 1990 | ELECTRICITY METERING - SOLID-STATE DEMAND REGISTERS FOR ELECTROMECHANICAL WATTHOUR METERS |
| NEMA UC 2:1993 (R2000, R2005, R2010, R2015) | UNDERCARPET POWER DISTRIBUTION SYSTEMS |
| CSA C22.2 No. 61010.1 :2012 | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| CSA C22.2 No. 199 : 2007 : INC : ADD A : 2010 : R2012 | AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE - PART 2: PARTICULAR REQUIREMENTS FOR AUTOMATIC BURNER IGNITION SYSTEMS AND COMPONENTS |
| CSA C22.2 No. 18.3 : 2012 | CONDUIT, TUBING, AND CABLE FITTINGS |
| CSA C22.2 No. 244 : 2005 : R2010 | SWITCHBOARDS |
| CAN/CSA-C22.2 NO. 61010-1-12 (R2017) | Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements (Tri-national standard, with UL 61010-1 and ANSI/ISA-61010-1 (82.02.01) |
| API 14F : 2008 : R2013 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| NFPA 731 : 2017 | INSTALLATION OF ELECTRONIC PREMISES SECURITY SYSTEMS |
| IEEE 1818-2017 | IEEE Guide for the Design of Low-Voltage Auxiliary Systems for Electric Power Substations |
| IEEE 2030.1.1-2015 | IEEE Standard Technical Specifications of a DC Quick Charger for Use with Electric Vehicles |
| IEEE C62.72-2007 | IEEE Guide for the Application of Surge Protective Devices for Low Voltage (1000 Volts or Less) AC Power Circuits |
| 10/30215301 DC : 0 | ISO 23551-1 - SAFETY AND CONTROL DEVICES FOR GAS BURNERS AND GAS-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES |
| UNE-EN ISO 23553-1:2014 | Safety and control devices for oil burners and oil-burning appliances - Particular requirements - Part 1: Automatic and semi-automatic valves (ISO 23553-1:2014) |
| CSA C22.2 No. 144.1 : 2016 | GROUND-FAULT CIRCUIT-INTERRUPTERS |
| CSA C22.2 No. 66.1 : 2006 : INC : UPD 2 : 2013 : R201100 | LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS |
| UL 1740:4ED 2018-01-26 | Robots and Robotic Equipment |
| UL 1897:7ED 2015-09-23 | Uplift Tests for Roof Covering Systems |
| UL 506:14ED 2017-06-02 | Specialty Transformers |
| UL 183:4ED 2009-09-22 | Manufactured Wiring Systems |
| UL 1682:5ED 2017-02-15 | Plugs, Receptacles, and Cable Connectors of the Pin and Sleeve Type |
| CSA C22.2 No. 60950-1 :2007 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| UL 458:6ED 2015-09-02 | Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts |
| CSA C22.2 No. 60950-1 : 2007 : INC : AMD 1 : 2011 : R2012 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| UL 486D:6ED 2015-06-19 | Sealed Wire Connector Systems |
| UL 2208:3ED 2010-07-08 | Standard for Solvent Distillation Units |
| CSA C22.2 No. 94.1 : 2015 | ENCLOSURES FOR ELECTRICAL EQUIPMENT, NON-ENVIRONMENTAL CONSIDERATIONS |
| UL 1699:3ED 2017-05-03 | Arc-Fault Circuit-Interrupters |
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| UL 2075:2ED 2013-03-05 | Gas and Vapor Detectors and Sensors |
| UL 1419:4ED 2016-02-26 | Professional Video and Audio Equipment |
| CSA C22.2 No. 66.1 : 2006 : INC : UPD 1 : 2012 : R201100 | LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS |
| CSA C22.2 No. 94.2 : 2015 | ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS |
| UL 977:5ED 2012-04-30 | Fused Power-Circuit Devices |
| CSA C22 NO. 4 : 2016 | ENCLOSED AND DEAD-FRONT SWITCHES |
| UL 60065:8ED 2015-09-30 | Standard for Audio, Video and Similar Electronic Apparatus - Safety Requirements |
| UL 2231-1:2ED 2012-09-07 | Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits; Part 1: General Requirements |
| UL 943:5ED 2016-05-17 | Ground-Fault Circuit-Interrupters |
| UL 1047:6ED 2015-10-15 | Standard for Isolated Power Systems Equipment |
| UL 499:14ED 2014-11-07 | Electric Heating Appliances |
| UL 1778:5ED 2014-06-13 | Uninterruptible Power Systems |
| CSA C22.2 No. 60950-1 : 2007 : INC : AMD 2 : 2014 : R201200 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| CSA C22.2 No. 66.1 : 2006 : R2011 | LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS |
| UL 857:13ED 2009-03-25 | Busways |
| UL 514A:11ED 2013-02-01 | Metallic Outlet Boxes |
| CSA C22.2 No. 60950-1 : 2007 : R2012 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| UL 60079-5:4ED 2016-04-29 | Explosive Atmospheres - Part 5: Equipment protection by powder filling |
| CSA C22.2 No. 60950-1 : 2007 : INC : UPD 1 : 2011 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| UL 778:6ED 2016-07-07 | Motor-Operated Water Pumps |
| UL 2572:2ED 2016-03-28 | Mass Notification Systems |
| 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) |
| CSA C22.2 No. 60950-1 : 2007 : INC : AMD 2 : 2014 : R2016 | INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS |
| UL 60335-1:6ED 2016-10-31 | Standard for Safety of Household and Similar Appliances, Part 1: General Requirements |
| CSA C22.2 No. 66.1 : 2006 | LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS |
| CSA C22.2 No. 66.1 : 2006 : R2015 | LOW VOLTAGE TRANSFORMERS - PART 1: GENERAL REQUIREMENTS |
| UNI EN ISO 23553-1 : 2014 | SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL-BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES |
| UL 60950-22:2ED 2017-03-31 | Information Technology Equipment - Safety - Part 22: Equipment to be Installed Outdoors |
| CSA C22.2 No. 61010.1 : 2012 : FR | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| ANSI Z83.21 : 2016 | COMMERCIAL DISHWASHERS |
| CSA C22.2 No. 254 : 2005(R2015) | MOTOR CONTROL CENTRES |
| CSA C22.2 No. 244 : 2005 : INC : UPD 1 : 2012 : R201000 | SWITCHBOARDS |
| C22.2 NO. 18.1-13 (R2018) | Metallic outlet boxes (Tri-national standard, with UL 514A and ANCE NMX- J-023/1) |
| C22.2 NO. 213-17 | Nonincendive electrical equipment for use in Class I and II, Division 2 and Class III, Divisions 1 and 2 hazardous (classified) locations (Binational standard with UL 121201) |
| CSA C22.2 No. 27 : 2009 : R2013 | BUSWAYS |
| CSA C22.2 No. 199 : 2007 : INC : ADD A : 2010 | AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE - PART 2: PARTICULAR REQUIREMENTS FOR AUTOMATIC BURNER IGNITION SYSTEMS AND COMPONENTS |
| CSA C22.2 No. 199 : 2007 : R2011 | AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE - PART 2: PARTICULAR REQUIREMENTS FOR AUTOMATIC BURNER IGNITION SYSTEMS AND COMPONENTS |
| SAE J3068_201804 | Electric Vehicle Power Transfer System Using a Three-Phase Capable Coupler |
| CSA C22.2 No. 178.1 : 2014 | TRANSFER SWITCH EQUIPMENT |
| API RP 14F:2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| CSA C22.2 No. 168 : 2016 | COMMERCIAL DISHWASHERS |
| BS EN ISO 23553-1:2014 | Safety and control devices for oil burners and oil-burning appliances. Particular requirements Automatic and semi-automatic valves |
| UL 121201:9ED 2017-09-15 | Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations |
| ISO 23553-1:2014 | Safety and control devices for oil burners and oil-burning appliances Particular requirements Part 1: Automatic and semi-automatic valves |
| 12/30250105 DC : 0 | BS ISO 23553-1 - SAFETY AND CONTROL DEVICES FOR OIL BURNERS AND OIL BURNING APPLIANCES - PARTICULAR REQUIREMENTS - PART 1: AUTOMATIC AND SEMI-AUTOMATIC VALVES (ISO/DIS 23553-1:2012) |
| UL 514D:2ED 2013-06-28 | Cover Plates for Flush-Mounted Wiring Devices |
| UL 508:18ED 2018-03-30 | Industrial Control Equipment |
| UL 1008A:2ED 2017-09-05 | Transfer Switch Equipment, Over 1000 Volts |
| UL 746C:7ED 2018-02-05 | Polymeric Materials - Use in Electrical Equipment Evaluations |
| EN ISO 23553-1:2014 | Safety and control devices for oil burners and oil-burning appliances - Particular requirements - Part 1: Automatic and semi-automatic valves (ISO 23553-1:2014) |
| ISO 23551-1:2012 | Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 1: Automatic and semi-automatic valves |
| AWWA C542 : 2016 | ELECTRIC MOTOR ACTUATORS FOR VALVES AND SLIDE GATES |
| CSA C22.2 No. 244:2005 | SWITCHBOARDS |
| CSA C22.2 No. 199 :2007 | AUTOMATIC ELECTRICAL CONTROLS FOR HOUSEHOLD AND SIMILAR USE - PART 2: PARTICULAR REQUIREMENTS FOR AUTOMATIC BURNER IGNITION SYSTEMS AND COMPONENTS |
| CSA C22.2 No. 27 :2009 | BUSWAYS |
| CSA C22.2 No. 18.1 : 2013 : INC : UPD 2 : 2017 | METALLIC OUTLET BOXES |
| CSA C22.2 No. 18.3 : 2012 : INC : UPD 1 : 2014 | CONDUIT, TUBING, AND CABLE FITTINGS |
| CSA C22.2 No. 61010.1 : 2012 : INC : UPD 2 :2016 | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| API 14FZ : 2013 | RECOMMENDED PRACTICE FOR DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, ZONE 0, ZONE 1, AND ZONE 2 LOCATIONS |
| CSA C22.2 No. 61010.1 : 2012 : INC : UPD 2 : 2016 | SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS |
| API 14F REDLINE : 2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| UL 514C:4ED 2014-04-08 | Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers |
| IEEE C37.20.3-2013 REDLINE | IEEE Standard for Metal-Enclosed Interrupter Switchgear (1 kV-38 kV) |
| SAE J3068_202207 | Electric Vehicle Power Transfer System Using a Three-Phase Capable Coupler |
| CSA FC 3 : 2004 | PORTABLE FUEL CELL POWER SYSTEMS |
| ANSI/CSA AMERICA FC 3-2004 (R2017) | PORTABLE FUEL CELL POWER SYSTEMS |
| ISA RP12.4 : 1996 | PRESSURIZED ENCLOSURES |
| 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) |
| CEI EN IEC 62208:2024 | Empty enclosures for low-voltage switchgear and controlgear assemblies - General requirements |
| PIP ELSAP04 : 2015 | UNINTERRUPTIBLE POWER SUPPLY (UPS) SYSTEM SPECIFICATION |
| ASTM B 555 : 1986 : R2018 | Standard Guide for Measurement of Electrodeposited Metallic Coating Thicknesses by Dropping Test |
| UL 514A:11ED 2013-02-01 | Metallic Outlet Boxes |
| UL 1439:5ED 2015-04-21 | Tests for Sharpness of Edges on Equipment |
| CSA C22.2 No. 0.4 : 2004(R2013) | BONDING OF ELECTRICAL EQUIPMENT |
| CSA C22.2 No. 0.5 : 2016 | THREADED CONDUIT ENTRIES |
| UL 514C:4ED 2014-04-08 | Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers |
| CSA C22.2 No. 14 : 2013 | INDUSTRIAL CONTROL EQUIPMENT |
| CSA C22.2 No. 89 : 2015 | SWIMMING-POOL LUMINAIRES, SUBMERSIBLE LUMINAIRES, AND ACCESSORIES |
| CSA C22.2 No. 94.2 : 2015 | ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS |
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