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Electrical Tubing and Sleeving Group

The Electrical Tubing and Sleeving Group is comprised of U.S. manufacturers working cooperatively to meet the needs of customers in worldwide markets by:
  • Educating users on the merits and applications of electrical tubing and sleeving products
  • Participating in national and international standards programs, including NEMA, UL, ANSI, ASTM, CANENA, IEC, ISO, VDE, JIS, CSA
  • Keeping the industry informed on relevant technical and environmental issues
  • Collecting, monitoring and maintaining statistical data

The primary end-use application for electrical tubing and sleeving products include industrial and electric motors, generators, transformers, wiring harnesses, lighting, small appliances, and other electrical apparatus for primary and supplementary insulation over connectors, terminals, etc.


The product scope of the Section includes flexible and semi-rigid electrical insulating tubular products, but not limited to: Fabric-based plastic and rubber, including heat-shrinkable and spiral wound products.

Click here for detailed product scope information.

Technical Activities

Standards play a vital part in the design, production, and distribution of products destined for both national and international commerce. Sound technical standards benefit the user, as well as the manufacturer, by improving safety, bringing about economies in product, eliminating misunderstandings between manufacturer and purchaser, and assisting the purchaser in selecting and obtaining the proper product for his particular need.

NEMA devotes much of its time, effort, and resources to voluntary standardization activities.

1. Standards in the purview of the Tubing and Sleeving section:

NEMA TF1 - Coated Electrical Sleeving
NEMA TF2 - Uncoated Treated Fiberglass Sleeving

2. This section devotes most of its technical activity on two UL standards:
UL 224 - Extruded Insulating Tubing
UL 1441 - Coated Electrical Sleeving

These standards are harmonized with their Canadian counterparts respectively:
C22.2 No. 198.1-99
C22.2 No. 198.3

The section members play a very active role in the CANENA efforts that resulted in a high degree of harmonization between the two sets of standards. NEMA holds the CANENA technical harmonization committee secretariat. The Chairman is also a NEMA member. The committee just finalized a comprehensive round of revisions to the first edition of the harmonized documents. During the last part of 2005 and the beginning of 2005 UL and CSA are balloting the changes proposed by CANENA.

3. Members of the section are involved in the IEC 60684 standardization activities regularly attending meetings of the IEC TC15 committee and related working group. One consequence is that the harmonized UL/CSA standards are also to a great extent in line with the IEC 60684 document.

Government Affairs

Through NEMA, the section develops industry positions on legislative and regulatory initiatives that may affect member products, markets, and customers. NEMA's work has resulted in contributions to public policy development and in promoting competitiveness, technological progress, and public safety. On the Government Affairs homepage members can search for and e-mail federal representatives to convey opinions regarding energy policy or other issues related to the electroindustry.

NEMA Government Affairs provides specific services to its members and information in the areas of Environment, Health & Safety; Energy; and International Trade & Commerce.

Market Economics

Through NEMA, member companies are able to develop and implement tailored, industry-specific market and statistical programs that benefit participating companies. Reports may include:

  • Product orders and sales
  • Market forecasting
  • Shipments by trading areas
  • Channels of distribution
  • Financial and operating ratios
  • Wages and benefits
  • Foreign trade

The association also conducts economic analyses on the impact of legislation and regulations on member products, and monitors and reports on key industry market indicators. All programs comply with NEMA statistical confidentiality policies. For more information, please see Business & Economy.


Membership in NEMA is open to any firm actively engaged in the manufacture in North America of a product within the NEMA scope and for sale in the open market. Membership of foreign firms is subject to product section policies and NEMA Board of Governors approval.

NEMA operates on a fee-for-service basis. Each product section establishes its projects and activities and approves an annual operating budget.


Related Manufacturers

Related Standards and Documents

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