Why does AC electrical power come in 3 phases? What the heck is a “phase”, anyway?
In this episode of the EEK! Series, you’ll learn about 3-phase power and its advantages.
In short: fewer wires, more power, and the Earth itself is a conductor.
In addition, 3-phase industrial motors are more efficient and don’t require a starting capacitor since the 3 phases are “rotating” already.
Be sure to watch EEK! #1 and EEK! #2 first!
In episode 2 of the EEK! series, we cover the basic difference between direct current (DC) and alternating current (AC). Why is your home powered by AC, and not DC?
Simply put, AC allows the use of transformers to step up the voltage, step down the current, and therefore bypass the little problem of too much current flowing over a thin wire.
DC cannot be easily converted in this way for efficient power transmission over long distances. There’s more to say about AC, so look for a 3-phase video soon.
Check out the video below!