IEEE 3-1942

3-1942 is a superseded AIEE proposed standard that sets out guiding principles for selecting reference values used in electrical standards. It is aimed at establishing consistent base values for engineering work across power, energy, components, dielectric materials, and electromagnetic applications. As a technical reference document, it helps reduce ambiguity in definitions and comparisons, supporting more uniform design, testing, and specification practices in electrical engineering.

About 3-1942

This document addresses how reference values should be chosen when developing or applying electrical standards. In the context of AIEE proposals, the emphasis is typically on creating practical, repeatable foundations for measurement and specification rather than on detailed equipment design. 3-1942 is relevant where standard values must be aligned across different electrical disciplines, especially when ratings, tolerances, or comparative calculations depend on a common reference basis. Its superseded status indicates it reflects an earlier stage of standardization.

Where is 3-1942 used?

3-1942 is most useful in electrical engineering settings where reference quantities influence design or evaluation. That can include power-system studies, apparatus rating conventions, insulation and dielectric work, and technical documents that compare performance against a defined baseline. It may also be consulted in laboratories, standards development work, and procurement specifications where consistent reference values are needed for components, circuits, or field-related calculations. The standard supports coordinated use of values across related technical areas.

Importance in practice

In practice, 3-1942 matters because reference values affect how engineers define, measure, and compare electrical performance. Clear guidance can improve consistency between specifications, test results, and design assumptions, which helps reduce misinterpretation in technical communication. For organizations working with electrical standards, a common reference basis supports better compliance review, more reliable procurement language, and lower risk of mismatch between related documents. Even as a superseded standard, it can remain useful for historical context and legacy references.

• Guiding principles for reference values
• Electrical standards and base quantities
• Power, components, and dielectric context
• Support for consistent testing and specification