
Clamp-On Insulator 12 Gauge Galvanized Steel Bracket 2-1/4 Inch, Porcelain Insulator, Fits Rigid Conduit 1-1/4 - 2 Inch Porcelain insulators are used in all type sof applications from salty seaside substations to highly corrosive petrochemical facilities along the equator, porcelain insulators enable continued operation at the designed voltages.