INSTALLATION GUIDELINES OF ELECTRICAL EQUIPMENT IN HAZARDOUS AREAS (IS 5571)
Adequate precautions to avoid ESD & Lightning to be implemented
Use of light alloy (Mg, Al, Ti, ) material to be assessed critically in HAs due to its incendive properties
Where reasonably practical, electrical apparatus generally and switch & control apparatus should be installed outside the Hazardous Areas
Electrical apparatus may be installed in open air in a non-hazardous area