NCCER Electrical Certification Practice Test

Cable markings serve as essential identifiers that provide crucial information about electrical cables, ensuring safe and effective usage in various applications. Among the details typically included in these markings are ampacity, voltage rating, and insulation type, which help users understand the cable's capacity to carry electrical loads, the maximum voltage it can safely handle, and the materials used for insulation that affect safety and durability.

The aspect that is not indicated by cable markings is the power factor. Power factor is a measure of how effectively electrical power is being converted into useful work output, which varies based on the load connected to the circuit rather than the cable itself. As such, it is not a consistent, inherent characteristic of the cable and therefore does not appear in the markings. Understanding the distinction between these different elements is critical for electrical professionals when selecting and using cables in a compliant and efficient manner.