NEMA - ANSI C78.1406
Electric Lamps - P28 Single-Contact Medium Prefocus-Based Projection Lamps for Base-Down Operation - Dimensions
|Publication Date:||1 January 2004|
This standard establishes the dimensions essential to interchangeability of singlecontact medium prefocus based projection lamps of T-10 and T-12 bulb sizes. It is not the intent to prescribe operating characteristics or details of design.