Glow Wire | Hot Wire Ignition Requirements


Beginning in 2018 several Underwriter’s Laboratories (UL) standards have new requirements for insulating materials, and presently several European (IEC) standards require insulating materials meet certain minimum requirements. One of the new UL requirements is a minimum value for Hot Wire Ignition (HWI), or to meet an End-Product Glow-Wire test or a Nichrome wire test. The IEC standards require materials meet minimum values for Glow Wire Flammability Index (GWFI) and Glow Wire Ignition (GWI). Traditional materials used in coil construction can fall short of meeting this requirement. Deltrol Controls has a solution that can pass the glow wire test requirements. Contact us today to discuss your specific application.