Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 3: Gauges; Amendment 20

This document establishes technical specifications for gauges utilized in the assessment of lamp caps and lampholders. It defines precise geometric tolerances and dimensional requirements necessary to verify the safety and interchangeability of lighting components. The scope covers various types of lamp bases commonly used in electrical systems, ensuring that manufactured products meet consistent performance criteria. By providing standardized measurement tools, this specification facilitates quality control processes for both manufacturers and regulatory bodies. The content includes detailed diagrams and dimensions for specific gauge types, enabling accurate inspection procedures. These guidelines support the compatibility of lighting fixtures across different regions by promoting uniformity in component design. Adherence to these specifications helps prevent installation errors and ensures electrical safety in various applications. The document serves as a reference for developing testing equipment and procedures within the electrical lighting industry. It addresses modifications and updates to earlier versions of similar regulations, reflecting advancements in manufacturing technologies and safety practices over time.