Illumination shall be provided for all working spaces about service equipment, switchboards, panelboards, and motor control centers _____.
a) over 600V
b) located indoors
c) rated 1,200A or more
d) using automatic means of control
See answer and applicable Code reference
The correct answer is: b) located indoors
Access and working space requirements about electrical equipment are outlined in Sec. 110.26 of the 2011 NEC. As noted in 11