Where can not be installed a main service disconnect?

A main service disconnect cannot be installed in areas that are considered hazardous locations, such as those with flammable gases or vapors, as defined by the National Electrical Code (NEC). Additionally, it should not be placed in bathrooms or within the vicinity of Swimming Pools to ensure safety and accessibility. Lastly, it must be readily accessible and cannot be located in a locked room or behind barriers that impede quick access in emergencies.