Porcelain lamp holders used to be the most common lamp holders made.
Lamp holder cooper wiring device ceramic porcelain.
The instructions for this device states that the black hot wire goes to the brass screw and the white neutral goes to the silver screw.
I purchased a leviton porcelain lamp holder with a pull chain the rating is 660w 250v at home depot.
Mfr e5icat view product.
How to wire a porcelain lamp holder electrical troubleshooting question.
Cooper lighting eaton lamp holder aluminum cfl incandescent led tungsten halogen e26 screw base base.
Lamp holder porcelain incandescent medium base 600 v 660 w keyless white.
Pull chain lamp holder with outlet.
The eaton 659 sp medium base ceiling lamp holder with pull chain feature is made of high strength porcelain and mounts on 4 inch outlet boxes with breakout for 3 25 inch box mounting.
Eaton wiring 667 sp 660 watt 125 volt medium base ceiling receptacle lamp holder with pull chain porcelain white 4 5 out of 5 stars 226 7 99 7.
Mfr 9878 view product.
They were nonconductive they could be made cheaply and quickly and once installed they were virtually unbreakable.