These guidelines provide information on the proper application and installation of all expansion and expansion/deflection fittings intended for use in hazardous and non-hazardous locations in accordance with the These guidelines provide information on the proper application and installation of all expansion and expansion/deflection fittings intended for use in hazardous and non-hazardous locations in accordance with the National Electrical Code® (NEC); the Canadian Electrical Code® (CE Code), Part I; the International Building Code; and the National Building Code of Canada.