flameproof enclosure definition
flameproof enclosure means an enclosure for electrical machinery or apparatus that will withstand, when the covers, or other access doors are properly secured, an internal explosion of the inflammable gas or vapor which may enter or originate inside the enclosure, without suffering damage and without communicating the internal flammation (or explosion) to the external inflammable gas or vapor in which it is designed to be used, through any joints or other structural openings in the enclosure
flameproof enclosure means an enclosure in which the parts which can ignite an explosive atmosphere are placed and which can withstand the pressure developed during an internal explosion of an explosive mixture and which prevents the transmission of explosion to the explosive atmosphere surrounding the enclosure;
flameproof enclosure means an enclosure for electrical apparatus which will withstand without injury any explosion of prescribed flammable gas that may occur within it under practical conditions of operations within the rating of the apparatus and recognised overloads (if any) associated therewith, and will prevent the transmission of flame such as will ignite any prescribed flammable gas that may be present in the surrounding atmosphere;