What Does Explosion-Proof Level ABC Mean

Ew “abc” represents gas classifications, categorized into three levels—IIA, IIB, and IIC—according to the maximum experimental safe gap (MESG) or the minimum igniting current (MIC).

Kategoriya Rewşa	Dabeşkirina gazê	gazên nûnerê	Kêmtirîn Enerjiya Çirûska Ignition
Di bin The Mine	ez	Metan	0.280mJ
Factory Outside The Mine	IIA	Propane	0.180mJ
	IIB	Ethylene	0.060mJ
	IIC	Hîdrojen	0.019mJ

Of these, the IIC classification is deemed the most hazardous, with IIB and IIA following in decreasing order of risk. Gases falling under the IIC classification include hydrogen, acetylen, karbon dîsulfîdê, ethyl nitrate, and water gas. Those in the IIB category encompass ethylene, coke oven gas, propyne, û hîdrojen sulfide. The IIA classification includes gases such as methane, etan, benzol, û diesel.