What is a 'feeder' in the context of power distribution?

In the context of power distribution, a 'feeder' refers to a conductor that carries electric power from a substation to distribution points, such as transformers or various load centers. This is crucial in the power distribution network because feeders transport the electricity generated at substations over longer distances to local areas where it can be distributed to residential, commercial, or industrial consumers.

Understanding the role of a feeder helps in comprehending how electricity is efficiently delivered from the generation point to the end-users, and it plays a vital part in the overall infrastructure of a power distribution system. Feeders are typically designed to handle significant loads, making them a key component in ensuring reliable and safe electricity supply throughout the network.

The other options describe different elements or systems associated with electrical distribution but do not define what a feeder is. For instance, transformers play a role in stepping voltage up or down, measuring devices are used for monitoring and control, and backup power systems are related to emergency power solutions. However, none of these options accurately capture the specific function and definition of a feeder in power distribution.