NEMA ICS 6-1993 (R2006)
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Industrial Control and Systems: Enclosures
Available format(s)
Hardcopy , PDF
Superseded date
20-04-2023
Superseded by
Language(s)
English
Published date
10-05-2017
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Foreword
Section 1 GENERAL
1.1 Referenced Standards
1.2 Scope
1.3 Normative Standards
1.4 General Requirements
Section 2 DEFINITIONS
Section 3 CLASSIFICATION
3.1 Standard Enclosure Types
3.2 Multiple Type Designations
Section 4 CHARACTERISTICS AND RATINGS
Section 5 PRODUCT MARKING, INSTALLATION, AND MAINTENANCE
INFORMATION
5.1 Marking
5.2 Enclosure Grounding
5.3 Tapered Pipe Threads
5.4 Maintenance
Section 6 SERVICE AND STORAGE CONDITIONS
Section 7 CONSTRUCTION
7.1 Strength of Enclosures
7.1.1 Sheet Metal Enclosures
7.1.2 Cast Metal Enclosures
7.1.3 Securing Means
7.2 Ventilating Openings
7.2.1 General
7.2.2 Perforated or Expanded Sheet Metal
7.2.3 Screen Enclosures
7.2.4 Minimum Screen Wire Size
7.3 Wire Entrances
7.3.1 Knockouts
7.3.2 Knockout Diameters and Conduit Bushing
Dimensions
7.3.3 Threaded Conduit Hubs
7.3.4 Threaded Holes for Rigid Conduit
7.4 Electrical Spacings
7.5 Wire-Bending Space
7.6 Provisions for Grounding
7.7 Legends
Section 8 PERFORMANCE REQUIREMENTS AND TESTS
8.1 General
8.2 Nonmetallic Enclosures
8.3 Type 5 and Type 12 Enclosures with Ventilated
Compartment
Section 9 APPLICATION
Covers enclosure requirements of all industrial control devices functioning on commercial voltages of up to 750 V dc or up to 7,200 V ac. Includes information concerning ratings, construction, testing, performance and manufacture.
| DevelopmentNote |
To be used in conjunction with NEMA 250. (06/2005)
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| DocumentType |
Standard
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| Pages |
0
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| PublisherName |
National Electrical Manufacturers Association
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| Status |
Superseded
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| SupersededBy |
| MIL-B-18897 Revision F:1990 | BOILERS, STEAM AND HOT WATER, WATERTUBE (STRAIGHT BARE AND FINNED TUBE), CAST IRON AND FIREBOX, PACKAGED TYPE (40,000 TO 35,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| MIL-B-44037 Revision A:1986 | BLENDER, POWERED MIX, MECHANICALLY REFRIGERATED |
| MIL-B-17452 Revision E:1990 | BOILERS, STEAM AND HOT WATER, FIRETUBE - SCOTCH PACKAGED TYPE (320,001 TO 35,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| IEEE 241 : 1990 | ELECTRIC POWER SYSTEMS IN COMMERCIAL BUILDINGS |
| ANS 57.7-1988(R1997) | DESIGN CRITERIA FOR AN INDEPENDENT SPENT FUEL STORAGE INSTALLATION (WATER POOL TYPE) |
| SAE ARP 1940 : 1993 | SOLID-STATE FREQUENCY CONVERTER 400 HERTZ, 3-PHASE OUTPUT |
| MIL-C-13874 Revision K:1992 | COMPRESSORS, RECIPROCATING AND ROTARY, AIR, ELECTRIC MOTOR DRIVEN |
| MIL-PRF-32037 Base Document:1999 | BLAST CLEANING ROOM |
| F-B-2903 Base Document:1998 | BOILERS, STEAM AND HOT WATER, FIRETUBE, SCOTCH PACKAGED TYPE (320,001 TO 35,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| ASME AG-1 : 2019 | CODE ON NUCLEAR AIR AND GAS TREATMENT |
| MIL-B-18796 Revision F:1984 | BURNERS, SINGLE: OIL, GAS, AND GAS-OIL COMBINATION FOR PACKAGED BOILERS (320,001 TO 125,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| MIL-G-19826 Revision F:1984 | GENERATOR SET, DIESEL ENGINE, ALTERNATING CURRENT FOR FACILITIES CONSTRUCTION, 1O KW THRU 500 KW (NOT STOCKED) |
| 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 |
| OO-L-2880 Base Document:1997 | LAUNDRY UNIT, SKID-MOUNTED, 100 POUNDS (DRY WEIGHT) PER HOUR |
| F-P-2908 Base Document:1997 | PUMPING UNIT, CONDENSATE, RETURN, AND BOILER FEED PACKAGE |
| SAE J2051_200505 | Qualifications for Four-Way Subbase Mounted Air Valves for Automotive Manufacturing Applications |
| 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 |
| API 540:1999 | ELECTRICAL INSTALLATIONS IN PETROLEUM PROCESSING PLANTS |
| MIL-C-3925 Revision H:1989 | COMPRESSOR, RECIPROCATING AND ROTARY POWER DRIVEN, AIR [PAINT SPRAY TYPE] |
| ASHRAE HDBK REFRIGERATION : 2014 | ASHRAE HANDBOOK - REFRIGERATION |
| MIL-B-29205 Revision A:1990 | BOILERS, FLUIDIZED BED, STEAM AND HOT WATER, PACKAGED TYPE (330 TO 51,500 POUNDS PER HOUR THERMAL OUTPUT CAPACITY) |
| ASME BTH 1 : 2017 | DESIGN OF BELOW-THE-HOOK LIFTING DEVICES |
| MIL-B-28685 Base Document:1990 | BAGHOUSE, REVERSE PULSE JET; FOR PACKAGED BOILEK3 FIRED ON COAL OR A COMBINATION OF COAL AND GAS, COAL AND OIL, OR COAL-GAS-OIL (2,000,000 TO 125,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| API 551 : 2016 | PROCESS MEASUREMENT |
| ASME AG 1 : 2012 | CODE ON NUCLEAR AIR AND GAS TREATMENT |
| F-S-2911 Base Document:1997 | STOKERS, MECHANICAL - FOR PACKAGED BOILERS FIRED ON COAL OR A COMBINATION OF COAL-GAS, COAL-OIL, OR COAL-GAS-OIL (2,000 TO 50,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| A-A-59392 Base Document:1999 | GRINDING MACHINES, SURFACE, ROTARY TABLE, HORIZONTAL SPINDLE |
| MIL-S-3788 Revision G:1991 | SHAPER, WOODWORKING |
| F-B-2902 Base Document:1990 | BOILERS, STEAM WATERTUBE (BENT TUBE, MULTI-DRUM AND CROSS DRUM) PACKAGED TYPE (10,000,000 TO 125,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| MIL-M-29198 Revision A:1985 | MONITOR, CARBON MONOXIDE, CONTINUOUS AND ALARM [FOR BREATHING AIR SYSTEMS] |
| API 540 : 1999 : R2006 | ELECTRICAL INSTALLATIONS IN PETROLEUM PROCESSING PLANTS |
| OO-P-2895 Base Document:1997 | PLANT, AGGREGATE, SECONDARY, WITH CONE CRUSHER, MOBILE, 75 TON PER HOUR CAPACITY |
| MIL-H-82000 Revision C:1990 | HEATER, HOT OIL, 1.5, 3 AND 5 MILLION BTU/H OUTPUT, SKID MOUNTED |
| MIL M 29212 : B NOTICE 1 | MIXING PLANT, ASPHALT, DRUM TYPE, PORTABLE, ELECTRIC MOTOR DRIVEN, 120 TONS PER HOUR CAPACITY |
| MIL-B-17095 Revision H:1990 | BOILERS, STEAM, WATERTUBE (BENT TUBE, MULTI-DRUM AND CROSS DRUM) PACKAGED TYPE (10,000,000 TO 125,000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| 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 |
| MIL-C-24174 Revision A:1987 | CONTROL, NAVIGATION LIGHTS, GENERAL SPECIFICATION FOR |
| XX-C-2816 Revision A:2016 | COMPRESSOR, AIR, RECIPROCATING OR ROTARY, ELECTRIC MOTOR DRIVEN, STATIONARY, 10 HP AND LARGER |
| F-B-2910 Base Document:1998 | BURNERS, SINGLE: OIL, GAS, AND GAS-OIL COMBINATION FOR PACKAGED BOILERS (320,001 TO 125, 000,000 BTU/HR THERMAL OUTPUT CAPACITY) |
| MIL-B-43928 Revision A:1987 | BROILER, CONVEYORIZED, INFRARED, ELECTRIC |
| WW-F-2743 Revision A:1998 | FURNACES, WARM AIR & HEATERS, UNIT, FORCED AIR CIRCULATION, OIL & GAS FIRED |
| CC-G-2745 Base Document:1984 | GENERATOR SETS, DIESEL ENGINE, ALTERNATING CURRENT, FOR FACILITIES CONSTRUCTION; 10 KW THROUGH 1000 KW (NOT STOCKED) |
| MIL-C-11085 Revision D:1986 | CONVEYOR, BELT; (FLAT, SKID-MOUNTED, ELECTRIC-MOTOR-DRIVEN, 24-INCH-WIDE BELT, 50-FOOT-LONG FRAME; CAPACITY, 25 POUNDS PER FOOT, 75 TONS PER HOUR) |
| IEEE DRAFT 833 : D3 2004 | PRACTICE FOR THE PROTECTION OF ELECTRIC EQUIPMENT IN NUCLEAR POWER GENERATING STATIONS FROM WATER HAZARDS |
| OO-S-256 Revision K:2012 | Sewing Machine, Industrial, General Specification for |
| OO-S-236 Revision E:2015 | Saw, Circular, Table Type, Woodworking, Single Tilting Arbor, Floor Mounted |
| NEMA ICS 7 : 2014 | INDUSTRIAL CONTROL AND SYSTEMS: ADJUSTABLE - SPEED DRIVES |
| NEMA ICS 4:2015 | Application Guideline for Terminal Blocks |
| NEMA ICS 20:2009 (R2015) | Informational Guide to Electrical Industrial Topics |
| UFC 3-430-11 : 2001 | UNIFIED FACILITIES CRITERIA - BOILER CONTROL SYSTEMS |
| NEMA ICS 61800-2:2005 | Adjustable Speed Electrical Power Drive Systems, Part 2: General Requirements—Rating Specifications for Low Voltage Adjustable Frequency AC Power Drive Systems |
| NEMA ICS8 : 2011 | APPLICATION GUIDE FOR INDUSTRIAL CONTROL AND SYSTEMS CRANE AND HOIST CONTROLLERS |
| NEMA ICS 18:2001 (R2007) | INDUSTRIAL CONTROL AND SYSTEMS: MOTOR CONTROL CENTERS |
| IEEE 421.3-1997 | IEEE Standard for High-Potential Test Requirements for Excitation Systems for Synchronous Machines |
| NEMA ICS 3:2005 (R2010) | INDUSTRIAL CONTROL AND SYSTEMS: MEDIUM VOLTAGE CONTROLLERS RATED 2001 TO 7200 VOLTS AC |
| NEMA ICS 3.1 : 2009(R2014) | GUIDE FOR THE APPLICATION, HANDLING, STORAGE, INSTALLATION, AND MAINTENANCE OF MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTERS |
| NEMA ICS 1.3:1986 (R2001, R2009, R2015) | Preventive Maintenance of Industrial Control and Systems Equipment |
| NEMA ICS 2:2008 | Controllers, Contactors and Overload Relays Rated 600 V |
| NEMA ICS 9 : 1993 | INDUSTRIAL CONTROL AND SYSTEMS: POWER CIRCUIT ACCESSORIES |
| NEMA ICS 61800-1:2002(R2007) | Adjustable Speed Electrical Power Drive Systems, Part 1: General Requirements—Rating Specifications for Low Voltage Adjustable-Speed DC Power Drive Systems |
| NEMA ICS 2-1996, Part 8 (R2004, R2009) | INDUSTRIAL CONTROL AND SYSTEMS CONTROLLERS, CONTACTORS, AND OVERLOAD RELAYS RATED NOT MORE THAN 2000 VOLTS AC OR 750 VOLTS DC- PART 8: DISCONNECT DEVICES FOR USE IN INDUSTRIAL CONTROL EQUIPMENT |
| NEMA ICS 7.1:2014 | Safety Standards for Construction and Guide for Selection, Installation and Operation of Adjustable Speed Drive Systems |
| PIP PCSCP001 : 2009 | CONTROL PANELS SPECIFICATION |
| PIP ELSMC20 : 2011 | LOW-VOLTAGE AC ADJUSTABLE SPEED DRIVE SPECIFICATION |
| ASME B30.16 : 2017 | OVERHEAD UNDERHUNG AND STATIONARY HOISTS - SAFETY STANDARD FOR CABLEWAYS, CRANES, DERRICKS, HOISTS, HOOKS, JACKS, AND SLINGS |
| 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 |
| IEEE 3001.11-2017 | IEEE Recommended Practice for Application of Controllers and Automation to Industrial and Commercial Power Systems |
| PIP PCSEL001 : 2014 | PROCUREMENT OF INSTRUMENTATION JUNCTION BOXES |
| API 2031 : 1991 | COMBUSTIBLE GAS DETECTOR SYSTEMS AND ENVIRONMENTAL OPERATIONAL FACTORS INFLUENCING THEIR PERFORMANCE |
| PIP PCSCP001 : 2014 | CONTROL PANELS SPECIFICATION |
| ISA RP60.4 : 1990 | DOCUMENTATION FOR CONTROL CENTERS |
| ASME NUM 1 : 2009 | RULES FOR CONSTRUCTION OF CRANES, MONORAILS, AND HOISTS (WITH BRIDGE OR TROLLEY OR HOIST OF THE UNDERHUNG TYPE) |
| NEMA ICS 7 : 2014 | INDUSTRIAL CONTROL AND SYSTEMS: ADJUSTABLE - SPEED DRIVES |
| NEMA ICS 1.3:1986 (R2001, R2009, R2015) | Preventive Maintenance of Industrial Control and Systems Equipment |
| CSA C22.2 No. 5 : 2013 | MOLDED-CASE CIRCUIT BREAKERS, MOLDED-CASE SWITCHES AND CIRCUIT-BREAKER ENCLOSURES |
| ANSI C80.5 : 2015 | ELECTRICAL RIGID METAL CONDUIT - ALUMINUM (ERMC-A) |
| NEMA ICS 1.1-1984 (R1988, R1993, R1998, R2003, R2009, R2015) | Safety Guidelines for the Application, Installation and Maintenance of Solid State Control |
| NEMA ICS 7.1:2014 | Safety Standards for Construction and Guide for Selection, Installation and Operation of Adjustable Speed Drive Systems |
| NEMA ICS 10.2 : 2005 | INDUSTRIAL CONTROL AND SYSTEMS - PART 2: STATIC AC TRANSFER EQUIPMENT |
| NEMA 250 : 2014 | ENCLOSURES FOR ELECTRICAL EQUIPMENT (1000 VOLTS MAXIMUM) |
| NEMA ICS 3:2005 (R2010) | INDUSTRIAL CONTROL AND SYSTEMS: MEDIUM VOLTAGE CONTROLLERS RATED 2001 TO 7200 VOLTS AC |
| NEMA ICS 2.1 : 1990 | |
| NEMA ICS 3.1 : 2009(R2014) | GUIDE FOR THE APPLICATION, HANDLING, STORAGE, INSTALLATION, AND MAINTENANCE OF MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTERS |
| IEC 60947-7-1:2009 | Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors |
| NEMA ICS 5:2017 | Control Circuit and Pilot Devices |
| ASME B1.20.1 : 2013(R2018) | PIPE THREADS, GENERAL PURPOSE (INCH) |
| NEMA ICS 9 : 1993 | INDUSTRIAL CONTROL AND SYSTEMS: POWER CIRCUIT ACCESSORIES |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| NEMA ICS 2.2 : 83(R1988) | MAINTENANCE OF MOTOR CONTROLLERS AFTER A FAULT CONDITION |
| NEMA ICS 2.4 : 2003(R2012) | INDUSTRIAL CONTROL AND SYSTEMS: NEMA AND IEC DEVICES FOR MOTOR SERVICE - A GUIDE FOR UNDERSTANDING THE DIFFERENCES |
| NEMA ICS 1 : 2000(R2015) | INDUSTRIAL CONTROL AND SYSTEMS: GENERAL REQUIREMENTS |
| NEMA ICS8 : 2011 | APPLICATION GUIDE FOR INDUSTRIAL CONTROL AND SYSTEMS CRANE AND HOIST CONTROLLERS |
| ANSI/NEMA FB 1-2014 | Fittings, Cast Metal Boxes and Conduit Bodies for Conduit, Electrical Metallic Tubing (EMT) and Cable |
| NEMA ICS 4:2015 | Application Guideline for Terminal Blocks |
| NEMA ICS 10.1 : 2005 | INDUSTRIAL CONTROL AND SYSTEMS - PART 1: ELECTROMECHANICAL AC TRANSFER SWITCH EQUIPMENT |
| NEMA ICS 2:2008 | Controllers, Contactors and Overload Relays Rated 600 V |
| NEMA ICS 2.3 : 1995(R2008) | INDUSTRIAL CONTROL AND SYSTEMS: INSTRUCTIONS FOR THE HANDLING, INSTALLATION, OPERATION AND MAINTENANCE OF MOTOR CONTROL CENTERS |
| NEMA ICS 2-1996, Part 8 (R2004, R2009) | INDUSTRIAL CONTROL AND SYSTEMS CONTROLLERS, CONTACTORS, AND OVERLOAD RELAYS RATED NOT MORE THAN 2000 VOLTS AC OR 750 VOLTS DC- PART 8: DISCONNECT DEVICES FOR USE IN INDUSTRIAL CONTROL EQUIPMENT |
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