NEC: Class I, Division 1 And 2, Groups B, C, D, Class II, Division 1 And 2, Groups E, F, G, Class III; CSA Certified: Class I, Division 1 And 2, Groups B, C, D, Class II, Division 1 And 2, Groups E, F, G, Class III, Exd IIB + H2; UL 1598, UL 844, UL E10444