What Does Explosion-Proof Level ABC Mean

Tá an “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).

Catagóir Coinníoll	Aicmiú Gáis	Gáis ionadaíocha	Fuinneamh Spark Adhaint Íosta
Faoin Mianach	mé	Meatán	0.280mJ
Monarchan Lasmuigh den Mhiana	IIA	Própán	0.180mJ
	IIB	Eitiléin	0.060mJ
	IIC	Hidrigin	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, aicéitiléine, carbon disulfide, ethyl nitrate, and water gas. Those in the IIB category encompass ethylene, coke oven gas, propyne, agus hidrigin sulfide. The IIA classification includes gases such as methane, ethane, beinséin, agus diesel.