This liquidtight flexible steel conduit is designed for applications where safety concerns exist regarding a material’s reaction in a fire situation. The flexible inner core of this product is made from a galvanized steel strip. As in type LT, this core contains string packing between the helical convolutions in trade sizes 3/8 in. through 2 in. The specially formulated thermoplastic polyurethane jacket has excellent flame retardant characteristics as well as low smoke and toxicity generation characteristics. Acidic gases such as hydrogen chloride, hydrogen fluoride and hydrogen bromide are virtually eliminated as products of combustion. This product is ideally suited for installation in confined or enclosed areas where construction materials must generate very little smoke, and have a low flame spread as well as low toxic gas emissions in the event of fire. Such applications include mass transit vehicles where CEA is extensively used for wiring harnesses within and under passenger rail cars. Other applications include use in underground subway structures and tunnels.
