Lampholders shall be constructed, installed, or equipped with shades or guards so that _____ isn’t subjected to temperatures in excess of 90°C (194°F).
a) ferrous material
b) the shade or guard
c) combustible material
d) a or b
See answer and applicable Code reference
The correct answer is: c) combustible material
Article 410 covers requirements for luminaires, lampholders and lamps. Part VIII of this Article focuses on the installation of lampholders. As noted in Sec. 410.97, "Lampholders shall be constructed, installed, or equipped with shades or guards so that combustible material is not subjected to temperatures in excess of 90°C (194°F)."