A: Here is a quick run down of the most common lamp cap types.
- BC (B22) - Bayonet Cap the more common type of lamp found in your home, the lamp pushes in and twists 90 degrees.
- SBC (B15) - Small Bayonet Cap generally found in smaller applications due to the lampholder being smaller, the lamp pushes in and twists 90 degrees.
- ES (E27) - Edison Screw Cap is becoming more Popular as most of the vintage squirrel cage lamps seem to be ES versions, these lamp screw into the lampholder.
- SES (E14) - Small Edison Screw cap is the same as the ES version just smaller again generally found in some smaller applications as the lampholder is smaller.