Areas designated as hazardous (classified) shall be properly _____ and shall be available to those authorized to design, install, inspect, maintain, or operate electrical equipment at these locations.
a) cleaned
b) documented
c) maintained
d) all of the above
See answer and applicable Code reference
The correct answer is: b) documented
General requirements for electrical and electronic equipment installed in hazardous (classified) locations can be found in Sec. 500.4 of Art. 500. As noted in Sec. 500.4(A), "All areas designated as hazardous (classified) locations shall be properly documented. This documentation shall be available to those authorized to design, install, inspect, maintain, or operate electrical equipment at the location."