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What is a Standards Organization?
- Standards organizations create rating measurements for the performance of many different products.
- There are many Standards organizations throughout the world, however those most commonly recognized are North American and European organizations.
- Electrical enclosures are rated by organizations like NEMA, CSA, UL and IEC which identify an enclosure’s ability to provide protection from dust, dripping water, hose directed water and more.
While these Standards are all intended to guide the user to make the right choice of product, there are some important differences between them. |
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| Standards Organizations |
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NEMA - National Electrical Manufacturers' Association
1300 North 17th Street Rosslyn, VA 22209
- NEMA Standards Publication No. 250
- Enclosures for Electrical Equipment (1000 Volts Maximum)
- NEMA Standards Publication No. ICS6
- Enclosures for Industrial Controls and Systems
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| www.nema.org |
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UL - Underwriters’ Laboratories Inc.
333 Pfingsten Road, Northbrook, IL 60062
- UL 50 Cabinets and Boxes
- UL 508 Industrial Control Equipment
- UL 870 Wireways, Auxiliary Gutter, and Associated Fittings
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| www.ul.com |
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CSA - Canadian Standards Association International
178 Rexdale Boulevard, Etobicoke, Ontario, Canada M9W 1R3
- CSA Standard C22.2, No 0 General Requirements - Canadian Electrical Code, Part II
- CSA Standard C22.2, No 0.4 Bonding and Grounding of Electrical Equipment (Protective Equipment)
- CSA Standard C22.2, No. 14 Industrial Control Equipment for Use in Ordinary (Non-Hazardous) Locations
- CSA Standard C22.2, No. 40 Cutout, Junction, and Pull Boxes
- CSA Standard C22.2, No. 26 Construction and Test of Wireways, and Auxiliary Gutters, and Associated Fittings.
- CSA Standard C22.2, No. 94-M91 Special Purpose Enclosures
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| www.csa.ca |
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JIC - Joint Industry Council
7901 Westpark Drive, McLean, VA 22101
- EMP-1 Electrical Standards for Mass Production Equipment
- EGP-1 Electrical Standards for General Purpose Machine Tools
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EIA - Electronic Industries Association
2001 Eye Street, Northwest, Washington, DC 20006
- EIA RS-310-D Cabinets, Racks, Panels, and Associated Equipment
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| www.iec.ch |
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IEC - International Electrotechnical Commission
3 Rue de Varemb, Geneva, Switzerland
- IEC 529 Classification of Degrees of Protection Provided by Enclosures
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| www.iec.ch |
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CE Conformite Europeene
European Commission |
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North American Standards
In North America, NEMA, UL and CSA are the most commonly recognized Standards organizations. They are almost identical in their rating and testing of enclosures.UL and CSA
- Provide “certification labels” to be permanently attached inside the enclosures.
- Require that enclosures be tested in an approved lab in order to prove their performance.
- Inspect manufacturers to ensure they use approved materials and build to tested product designs.
NEMA, EEMAC and JIC
- Do not provide “certification labels” for enclosures
- Do not provide testing services or require enclosures to be tested.
- Leave compliance and testing to the discretion of the manufacturer.
JIC Ratings
- JIC or Joint Industrial Commission ratings are Standards which (in brief) specify minimum allowable material thickness for various enclosure sizes.
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Hammond Enclosure Ratings In general, Hammond Enclosures are...
- Listed by UL
- Certified by CSA
- Comply with NEMA
- Comply with EEMAC
- Comply with JIC
- Comply with IEC
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European Standards
IEC In Europe, IEC ratings are the most commonly recognized Standards for enclosures.
- IEC ratings are similar to NEMA, but the pass or fail requirements are different. (see NEMA to IEC Cross Reference Chart on page 7).
- IEC does not include ratings for enclosures in conditions of corrosion, rust or oil.
- IEC does not provide testing, so testing and compliance is left up to the manufacturer. In Europe, TUV and VDE are two popular testing agencies that manufacturers use.
CE
- CE is a European Union (EU) symbol, which indicates that the product complies with the EU directives or Standards for that product.
CE does not apply to empty enclosures because enclosures are components of a final assembly. Testing and compliance to EU directives is the responsibility of the final equipment manufacturer. |
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Dual Standards
UL and CSA have markings available that indicate approvals meet Standards of their “non-home” country.
- The cUL mark indicates the product has been tested to meet Canadian Standards by the UL organization.
- The cCSAus mark indicates the product has been tested to meet USA Standards by CSA.
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NEMA Type Designation
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Type 1 |
Type 3/3R |
Type 4 |
Type 4X |
Type 12/13 |
| Application |
Commercial
Junction Box
Switch Box
Pull Box
Service & Utility Box |
Commercial
Weather Proof
Meter Cabinet
Utility Box |
Industrial/Watertight
Electrical Hydraulic or Pneumatic Controls
Junction/Terminal Wiring Enclosures
Operator Interface/Consoles |
Industrial/Watertight
Electrical Hydraulic or Pneumatic Controls
Junction/Terminal Wiring Enclosures
Operator Interface/Consoles with Corrosion Resistant Properties |
Industrial Oil & Dust Tight
Electrical Hydraulic or Pneumatic Controls
Junction/Terminal Wiring Enclosures
Operator Interface/Consoles |
Hammond
Product Series |
N1J
N1A
CSKO
CS
CHKO
1416
1439
1420 |
EJ
1414N4
EN4SD |
EJ
1414N4
EN4SD
1418N4
1422N4 |
EJ...SS
1414N4SS 304/316
EN4SD...SS 304/316
1418N4SS 304/316
1422N4SS 304
PJ
PHW
PW
PB |
EJ
1414
EN4SD
1418
1422
1436
1438
2UD
2UHD
Series 2000 Consoles
IME |
National
Electrical
Manufacturers
Association
(NEMA Standard 250) |
Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment to provide a degree of protection against falling dirt. |
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with enclosed equipment to provide a degree of protection against falling dirt, rain,sleet, snow and windblown dust and that will be undamaged by the external formation of ice on the enclosure. |
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment: to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, hose directed water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure. |
Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water, and corrosion; and that will be undamaged by the external formation of ice on the enclosure. |
Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint and fiber flyings; and against dripping and light splashing of liquids. |
Underwriters
Laboratories
Inc.
(UL50 and UL508) |
Indoor use primarily to provide a degree of protection against limited amount of falling dirt. |
Outdoor use primarily to provide a degree of protection against rain, sleet, windblown dust, and damage from external ice formation. |
Indoor or outdoor use primarily to provide a degree of protection against windblown dust, and rain, splashing water, hose-directed water;and damage from external ice formation. |
Indoor or outdoor use primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing water, hose-directed water; and damage from external ice formation. |
Indoor use primarily to provide a degree of protection against circulating dust, falling dirt, and dripping non-corrosive liquids. |
Canadian
Standards
Association
(Standard C22.2, Nos. 14, 40 and 94) |
General purpose enclosure in ordinary locations. |
An enclosure for either indoor or outdoor use, constructed so as to provide a degree of protection against rain, snow, and windblown dust; undamaged by the external formation of ice on the enclosure. |
An enclosure for either indoor or outdoor use, constructed so as to provide a degree of protection against rain, snow, windblown dust, splashing and hose-directed water; undamaged by the external formation of ice on the enclosure. |
An enclosure for either indoor or outdoor use, constructed so as to provide a degree of protection against rain, snow, windblown dust, splashing and hose-directed water; undamaged by the external formation of ice on the enclosure; resists corrosion. |
An enclosure for indoor use, constructed so as to provide a degree of protection against circulating and settling dust and lint, fibre flyings; dripping and light splashing of non-corrosive liquids; not provided with knockouts. |
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Protection Rating - Quick Selection Guide
| Provides a Degree of Protection Against: |
Type 1 |
Type 3R |
Type 12 |
Type 13 |
Type 4 |
Type 4X |
| Contact with Enclosed Equipment |
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| Falling Dirt |
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| Falling & Lightly Splashing Water |
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| Dust |
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| Oil & Coolant |
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| Sleet & Ice |
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Splashing Water &
Hose-Down |
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| Corrosives |
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Industry and the Products they use
The following is a list of those industries with the enclosures most commonly used by them.
| Industry |
Examples of Products Used |
| Utilities, Municipalities (water/waste water) |
Industrial Enclosures, Non Metallic NEMA 2 & 4X |
Saw Mills, Pulp & Paper, Mining |
Industrial Disconnect, Freestanding, Corrosion Resistant |
Farm, Irrigation Systems |
Corrosion Resistant, Non Metallic NEMA 4X |
Transportation Industries |
Industrial Enclosures, Aluminum NEMA 12 & 4 |
Marine, Naval, Canadian Forces |
Industrial, Freestanding NEMA 4, Non Metallic & Stainless Steel |
General Industries |
Industrial Modular Operator Interface |
Process Industries (oil, chemical, food processing) |
Industrial Corrosion Resistant, 316 Stainless Steel |
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