■■■■■■■■■ proof,
Definition of ■■■■■■■■■ proof:
Electrical apparatus (such as compressors, motors, and switches) designed to contain explosions or flames produced within them (due to arcs, sparks, or flashes) without igniting the surrounding (external) flammable gases or vapors. This term may also include non-sparking tools.
Capable of withstanding or resisting the destructive effect of an ■■■■■■■■■; designed to prevent an ■■■■■■■■■ from occurring during use.
Meaning of ■■■■■■■■■ proof & ■■■■■■■■■ proof Definition
