What is the maximum weight of a luminaire that can be supported by the screw shell of a lampholder?

The maximum weight of a luminaire that can be supported by the screw shell of a lampholder is indeed 6 pounds. This specification is based on safety standards and manufacturer guidelines to ensure that the lampholder can adequately support the weight without compromising the electrical connections or presenting a risk of failure. Supporting a luminaire that exceeds this weight limit can lead to mechanical stress on the lampholder, an increased risk of electrical faults, and a potential hazard due to falling fixtures. Most building codes and electrical safety regulations endorse this maximum to ensure both safety and compliance in electrical installations.