Which type of cable indicates the number of conductors and their configuration in the designation 12/3?

The designation 12/3 refers specifically to a type of non-metallic sheathed cable, commonly known as NM cable or Romex. The first number, 12, indicates the wire gauge of the conductors, while the second number, 3, denotes the number of insulated conductors included in the cable. In this case, 12-gauge wire can carry appropriate electrical load for a variety of applications, making it versatile for residential wiring.

This configuration is particularly characteristic of non-metallic sheathed cables, which are designed for use in dry, indoor locations and are suitable for wiring outlets, switches, and light fixtures. The construction typically includes a ground wire and can have varying numbers of conductors based on the specific application needs, hence the significance of the 12/3 designation in identifying both gauge and number of conductors.

In contrast, the other types of cables listed do not have this specific numbering system related to gauge and conductor count in the same manner as non-metallic sheathed cables do. Flexible cords are used for portable appliances, coaxial cables are primarily for transmitting television signals and data, and communication cables are used for telecommunication applications. Each has its designations and configuration needs that differ from the characteristics of