UL styles are a way of classifying and organizing wires and cables based on their application. The most common hookup/lead-wire UL styles are:
UL Style 1007: This style is used for general wiring applications, such as in homes, offices, and factories.
UL Style 1015: This style is used for wiring circuits that carry low voltage, such as those found in alarm systems and telecommunications systems.
UL Style 1061: This style is used for wiring circuits that carry medium voltage, such as those found in industrial control systems and switchboards.
UL Style 1242: This style is used for wiring circuits that carry high voltage, such as those found in electrical substations.