UL cable is that the wire specifications are printed along the perimeter of the wire jacket. If you have spent time working with cables, you may have noticed the text printed along the outside jacket. Typically, this is a small-font, finely printed label that runs the entire length of the cable.UL specification that is sometimes defined as Appliance Wiring Material (AWM) and other times defined as Machine Tool Wire (MTW). Many UL specs are dual use, and by slightly increasing the jacket thickness, one can realize a dual rating such as UL1007/1569 or UL1015/1230. This text printed along the jacket may also define the flammability rating such as VW-1 or FT-1. Another valuable piece of information that is typically printed along the wire jacket is the maximum rated voltage and temperature. Some jackets carry a different maximum rated voltage that varies with temperature, so it’s not uncommon to see two different temperatures and voltage printed along the wire. It’s always best to refer to the wire manufacturer to clarify the performance specifications. AEROLEX brand cables are manufactured according to the UL standards and as per customer specific requirements.