How 60 Hz Took Over North America

Why does North America run on 60 Hz? It feels like one of those numbers that must have been carefully chosen by experts from the start. It wasn’t. In this episode from Weirdward Bound, we trace the bizarre electrical history behind the continent’s power standard: a time when different cities ran on totally different frequencies, utilities couldn’t easily connect, appliances weren’t portable, and the grid was anything but unified. This is a story about engineering, corporate rivalry, infrastructure lock-in, and how one technical choice became nearly impossible to undo. If you like strange forgotten history, hidden systems, and the weird backstories behind everyday life, subscribe to Weirdward Bound and stick around for more. 00:00 Intro 01:07 The Early Chaos Of Competing AC Frequencies 03:30 Tesla Forces The Shift To Sixty Hertz 06:57 Niagara Falls Creates The Twenty-Five Hertz Problem 09:59 GE, Fifty Hertz, And Southern California 11:47 How Sixty Hertz Became The Market Standard 13:40 The Long Life Of Twenty-Five Hertz Holdouts 16:01 Southern California’s Costly Conversion To Sixty Hertz 19:30 Mexico, Europe, And Japan’s Frequency Divide 21:38 Why Sixty Hertz Won 23:05 Outro