# 17-28-015

cap

base

part of an electric lamp which provides connection to the power supply by means of a lampholder or lamp connector and, in most cases, also serves to retain the electric lamp in the lampholder

Note 1 to entry: In some cases a cap serves as a thermal connection to the luminaire (or its heatsink).

Note 2 to entry: A cap can be an integral part of an electric lamp.

Note 3 to entry: This entry was numbered 845-08-15 in IEC 60050-845:1987.

Note 4 to entry: This entry was numbered 17-119 and 17-76 in CIE S 017:2011.

Publication date: 2020-12