Flammability and toxicity testing of wire and cable

Numerous organizations are developing and implementing new testing requirements to measure the flame propagation characteristics of tray cables and the toxic gases generated during combustion of wire and cable. An overview of the organizations developing the tests, a general description of the test protocols, the current status, and the potential impact on industrial and commercial facilities are provided. It is shown that the establishment of a new flame testing criteria for tray cables may eliminate some cable constructions presently permitted in cable tray. Introduction of new materials that either are more flame retardant, produce less smoke, or generate less corrosive or toxic gases will provide opportunities for new constructions and products. While only wire and cable are addressed, the combustion toxicity test procedures are also valid for testing any building material or furnishing