Amplifiers, loudspeakers, and other equipment shall be located or protected so as to guard against environmental exposure or physical damage that might cause _____.
a) a fire
b) a shock hazard
c) a personal hazard
d) all of the above
See answer and applicable Code reference
The correct answer is: d) all of the above
Article 640 covers equipment and wiring for audio signal processing, amplification, and reproduction equipment. As noted in Sec. 640.4, "Amplifiers, loudspeakers, and other equipment shall be so located or protected as to guard against environmental exposure or physical damage, such as might result in fire, shock, or personal hazard."