At what frequency is A/C power generated in the United States and Canada?

The correct frequency at which A/C power is generated in the United States and Canada is 60 Hz. This frequency has been the standard in these regions since the late 19th century when electrical systems were being developed. The reason for adopting 60 Hz over other frequencies, such as 50 Hz, was largely based on practical considerations related to the efficiency of electric motors and the transmission of electrical power over long distances.

In contrast, 50 Hz is predominantly used in many other parts of the world, such as Europe and Asia, which can lead to compatibility issues for devices designed for one frequency when used in regions with a different standard. Frequencies like 70 Hz and 80 Hz are not used as standard in electrical power systems, ensuring that the 60 Hz frequency stands as the established norm for A/C power generation in the U.S. and Canada. Understanding this standard is essential for lineman apprentices as it influences various applications, including electrical infrastructure and equipment design.