<< Back to Nationally Recognized Testing Laboratories (NRTLs)



Note: OSHA no longer includes the test standards listed below in any NRTL's scope of recognition primarily because the standards have been withdrawn or replaced. Any other reason(s) for removing a test standard is shown parenthetically. See each "Federal Register Notice" cited below for details about the changes made to the scope of recognition of the applicable NRTLs. As mentioned in these notices, if appropriate, OSHA has already recognized those NRTLs for other test standards to replace any standard listed below. See OSHA's informational web page for each NRTL to determine its current scope of recognition.

Federal Register Notice: 75:21664-21666, April 26, 2010

DesignationTitle
UL 486A Wire Connectors and Soldering Lugs for Use With Copper Conductors


Federal Register Notice: 74:47026-47029, September 14, 2009

DesignationTitle
ANSI C37.38Gas Insulated, Metal Enclosed Disconnecting, Interrupter and Grounding Switches.
ANSI C37.72Manually Operated Dead Front, Pad-Mounted Switchgear with Load Interrupting Switches and Separable Connectors for Alternating Current System.
ANSI C57.12.28Switchgear and transformers Pad-Mounted Equipment Enclosure Integrity.
ANSI ICS 2Industrial Control Devices, Controllers and Assemblies.
UL 3Flexible Nonmetallic Tubing for Electric Wiring.
ANSI/NFPA 11AMedium and High Expansion Foam Systems.
UL 45Portable Electric Tools.
ANSI/NFPA 72***Installation, Maintenance, and Use of Protective Signaling Systems.
UL 298Portable Electric Hand Lamps.
UL 351Rosettes.
UL 486BWire Connectors.
UL 511Porcelain Electrical Cleats, Knobs, and Tubes.
UL 1004AFire Pump Motors.
UL 1020Thermal Cutoffs for Use in Electrical Appliances and Components.
UL 1207Sewage Pumps for Use in Hazardous (Classified) Locations.
UL 1262Laboratory Equipment.
UL 1585Class 2 and Class 3 transformers.
UL 2083Halon 1301 Recovery/Recycling Equipment.
UL 2125Motor Operated Air Compressors for Use in Sprinkler Systems.
UL 3044Surveillance Closed Circuit Television Equipment.
***Temporarily reinstated on March 2, 2010 (75 FR 9441) for the period from September 14, 2009, to September 14, 2011.


Federal Register Notice: 70: 11273-11275, March 8, 2005

DesignationTitle
ANSI C57.12.57Ventilated Dry Type Network transformers 2500 kVA and Below, Three Phase
ANSI Z21.1bHousehold Cooking Gas Appliances
ANSI Z21.12Draft Hoods
ANSI Z21.45Flexible Connectors of Other Than All Metal Construction for Gas Appliances
ANSI Z21.61Gas Fired Toilets
ANSI Z83.6Gas Fired Infrared Heaters
ASTM E2010**Standard Test Method for Positive Pressure Fire Tests of Window Assemblies (not appropriate - no NRTL approval requirement for windows)
UL 9**Fire Tests of Window Assemblies (not appropriate - no NRTL approval requirement for windows)
UL 297Acetylene Generators, Portable Medium Pressure
UL 1418Cathode Ray Tubes
UL 1459Telephone Equipment
UL 1950*Information Technology Equipment, Including Electrical Business Equipment
UL 2601-1Medical Electrical Equipment, Part 1: General Requirements for Safety
UL 3111-2-31Hand-Held Probe Assemblies for Electrical Measurement and Test
FMRC 7812Industrial trucks LP Gas
FMRC 7816Industrial trucks LP Gas Dual Fuel
FMRC 7820Industrial trucks Electric
* The comparable standard for UL 1950 is UL 60950, which was added to each applicable NRTL's recognition through a previous notice (67 FR 30975, 5/8/02).
** This standard is no longer applicable because there is no NRTL approval requirement for windows.


Federal Register Notice: 68:579-583, January 6, 2003

DesignationTitle
ANSI C37.71Three Phase, Manually Operated Subsurface Load Interrupting Switches for Alternating-Current Systems
ANSI C57.12.13Liquid-Filled transformers Used in Unit Installations including Unit Substations-Conformance Requirements
ANSI C57.12.21Pad Mounted Compartmental-Type Self-Cooled Single-Phase Distribution transformers with High Voltage Bushings; 167 kVA and Smaller
ANSI C57.12.27Liquid Filled Distribution transformers Used in Pad Mounted Installations, Including Unit Substations–Conformance Requirements
ANSI C62.1Gapped Silicon-Carbide Surge Arresters for AC Power Circuits
ANSI S12.12Nonincendive Electrical Equipment for Use in Class I and II, Division 2, and Class III, Divisions 1 and 2, Hazardous (Classified) Locations
ANSI Z21.10.2Water Heaters–Sidearm Type Water Heaters
ANSI Z21.11.1Gas-Fired Room Heaters- Vented Room Heaters
ANSI Z21.14Approval Requirements for Industrial Gas Boilers
ANSI Z21.16Gas Unit Heaters
ANSI Z21.29Listing Requirements for Furnace Temperature Limit Controls and Fan Controls
ANSI Z21.37Approval Requirements for Dual Oven Type Combination Gas Ranges
ANSI Z21.48Gas-Fired Gravity and Fan Type Floor Furnaces
ANSI Z21.49Gas-Type Gravity and Fan Type Vented Wall Furnaces
ANSI Z21.53Gas-Fired Heavy Duty Forced Air Heaters
ANSI Z21.55Gas-Fired Sauna Heaters
ANSI Z21.70Earthquake Actuated Automatic Gas Shutoff Systems
ANSI Z83.3Gas Utilization Equipment in Large Boilers
ANSI Z83.10Separated Combustion System Central Furnaces
ANSI Z83.17Direct Gas Fired Door Heaters
UL 136Pressure Cookers (not appropriate - no NRTL approval requirement)
UL 198BClass H Fuses
UL 198CHigh-Interrupting-Capacity Fuses, Current Limiting Type
UL 198DClass K Fuses
UL 198EClass R Fuses
UL 198FPlug Fuses
UL 198GFuse for Supplementary Overcurrent Protection
UL 198HClass T Fuses
UL 198LD-C Fuses for Industrial Use
ANSI/NEMA 250Enclosures for Electrical Equipment
UL 900Air-Filter Units (not appropriate - no NRTL approval requirement)
UL 910Test for Flame-Propagation and Smoke-Density Values for Electrical and Optical-Fiber Cables Used in Spaces transporting Environmental Air
UL 1087 Molded-Case Switches
UL 1270Radio Receivers, Audio Systems, and Accessories
UL 1409Low-Voltage Video Products Without Cathode-Ray-Tube Displays
UL 1410Television Receivers and High-Voltage Video Products
UL 1570Fluorescent Lighting Fixtures
UL 1571Incandescent Lighting Fixtures
UL 1572High Intensity Discharge Lighting Fixtures
UL 3101-1Electrical Equipment for Laboratory Use; Part 1: General Requirements
UL 3101-2-20Electrical Equipment for Laboratory Use; Part 2: Laboratory Centrifuges
UL 3111-1*Electrical Measuring and Test Equipment; Part 1: General Requirements
UL 3121-1Process Control Equipment
UL 8730-1Electrical Controls for Household and Similar Use; Part 1: General Requirements
UL 8730-2-3Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Thermal Motor Protectors for Ballasts for Tubular Fluorescent Lamps (withdrawal pending)
UL 8730-2-4*Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Thermal Motor Protectors for Motor Compressors or Hermetic and Semi-Hermetic Type
UL 8730-2-6Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Automatic Electrical Pressure Sensing Controls Including Mechanical Requirements
UL 8730-2-7Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Timers and Time Switches
UL 8730-2-8Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Electrically Operated Water Valves
UL 8730-2-9*Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Temperature Sensing Controls
UL 8730-2-14Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Electric Actuators
UL 60730-1**Automatic Electrical Controls for Household and Similar Use; Part 1: General Requirements
UL 60730-2-10Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Electrically-Operated Motor Starting Relays
UL 60730-2-11Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Energy Regulators
UL 60730-2-12Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Electrically-Operated Doors
UL 60730-2-13Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Humidity Sensing Controls
UL 60730-2-16Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Automatic Electrical Water Level-Operating Controls of the Float Type for Household and Similar Applications
* Withdrawal of this standard was pending on the date of the notice. The standard has since been withdrawn.
** Inadvertently excluded from the list of standards being removed from UL's scope of recognition. The comparable standard that was added to UL's scope was UL 60730-1A.


Federal Register Notice: 66:47505-47508, September 12, 2001

DesignationTitle
ANSI C57.13.2Instrument transformers -- Conformance Test Procedures
ANSI S12.13Performance Requirements for Combustible Gas Detectors
ANSI S12.13.1Performance Requirements for the Combustible Gas Detectors
ANSI S12.15Hydrogen Sulfide Detection Instruments
ANSI S82.03Electrical and Electronic Process Measuring and Control
ANSI Z21.5Gas Clothes Dryers (now have multiple parts)
ANSI Z21.10Gas Water Heaters (now have multiple parts)
ANSI Z21.11Unvented Room Heaters (now have multiple parts)
ANSI Z21.44Gas-Fired Gravity and Fan Type Direct Vent Wall Furnaces
ANSI Z21.64Direct Vent Central Furnace
ANSI Z83.9Gas-Fired Duct Furnaces
ANSI Z83.12Gas Food Service Equipment - Baking and Roasting Ovens
ANSI Z83.13Gas Food Service Equipment - Deep Fat Fryers
ANSI Z83.14Gas Food Service Equipment - Counter Appliances
ANSI Z83.15Gas Food Service Equipment - Kettles, Steam Cookers, and Steam Generators
ANSI Z83.16Gas-Fired Unvented Commercial and Industrial Heaters
ASTM E152Standard Methods of Fire Tests of Door Assemblies
ASTM E163Standard Methods of Fire Tests of Window Assemblies
UL 14 Swinging Hardware for Standard Tin-Clad Fire Doors Mounted Singly or In Pairs
UL 114Electric Office Appliances and Business Equipment
UL 133Wires and Cables With Varnished Cloth Insulation
UL 303Refrigeration and Air-Conditioning Condensing and Compressor Units
UL 408Stationary Medium Pressure Acetylene Generators
UL 409Stationary Low-Pressure Acetylene Generators
UL 465Central Cooling Air Conditioners
UL 478Information-Processing and Business Equipment
UL 519Impedance-Protected Motors
UL 543Electrical Impregnated-Fiber Conduit
UL 547Thermal Protectors for Electric Motors
UL 559Heat Pumps
UL 560Electric Home-Laundry Equipment
UL 611Central-Station Burglar-Alarm Systems
UL 869Service Equipment
UL 883Fan-Coil Units and Room-Fan Heater Units
UL 962Household and Commercial Furnishings
UL 1025Electric Air Heaters
UL 1092Process Control Equipment (not formally established)
UL 1096Electric Central Air-Heating Equipment
UL 1438Household Electric Drip-Type Coffee Makers
UL 1555Electric Coin-Operated Clothes-Washing Equipment
UL 1556Electric Coin-Operated Clothes-Drying Equipment
UL 1624Light Industrial and Fixed Electric Tools
UL 1663Electric Hot Tubs, Spas, and Associated Equipment