Historical
NEMA ANSI C29.2:1992 (R1999)
For Insulators, Wet-Process Porcelain And Toughened Glass - Suspension Type
Covers suspension-type insulators, 4╝ in. (108 mm) diameter and larger, made of wet-process porcelain or toughened glass.
Content Provider
NEMA: National Electrical Manufacturers Association [nema]