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Flexible Insulation and Mica Group

The mission of the Flexible Insulation and Mica Group is to develop, publish, and maintain industry technical standards and to write industry position papers that are in the best interests of both industry and users of its products throughout North America and the world.

The Group is responsible for ANSI/NEMA FI-1, Manufactured Electrical Mica Standard, as well as the ANSI/NEMA FI-3 Standard on calendered pramid papers used for electrical insulation. The primary end-use for these products are commercial, including large and small transformers, generators and motor-generator sets, switchgear assemblies, and high voltage transformers.


All flexible sheet and tape materials used for electrical insulation, and all forms of built-up electrical insulation comprising mica splittings and/or mica paper in combination with suitable binders, and with or without re-enforcing materials and products made there from. Excluded are vulcanized fiber, fish paper and those products falling within the scope of the Industrial Laminate Section.

Click here for detailed product scope information.

Flexible Insulation and Mica Group Technical Services Activity

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. Many NEMA standards are approved as American National Standards under the procedures of the American National Standards Institute.

Standards in the purview of the Group:

ANSI/NEMA FI 1 - Manufactured Electrical Mica

NEMA FI2 - Untreated Mica Paper Used for Electrical Insulation

ANSI/NEMA FI3 - Calendered Aramid Papers Used for Electrical Insulation

The technical committee is presently working on a new standard “Combined flexible materials for electrical insulation” that essentially is an adaptation of the IEC 60626 standard. It deals with combined flexible materials consisting of two or more different insulating materials bonded together with or without adhesives.

2. The Group has one main technical committee that meets as needed either in person or via Web-Ex conferences. The committee forms task forces for specific projects such as writing new standards.

3. Members are actively involved in the UL 1446 Systems of Insulating Materials Standard activity at the Standard Technical Panel (STP) level.

4. The Group members are very active in IEC activities. They share the burden of supporting the IEC TC15 (Insulating materials) Secretariat as well as the IEC TC112 (Insulating systems) US Technical Advisory Group Secretariat with several other sections in the Insulating Materials Division. Several members are also chairing working groups in the IEC Technical Committees.

5. Members maintain also a liaison with ASTM’s Insulating Materials section.

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.


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