source: https://www.youtube.com/watch?v=OUcKJuMSSW4
Alternating current
AC electricity - electron alternates by flowing forward and backwards constantly
What is frequency? Refers to how many times the AC sine wave repeats per second
in North America it’s 60 Hz of electricity. Sine wave repeats 60 times per second
Polarity changes 120 times per second (+ to -
Rest of the world it’s 50 Hz
Different phases
- Single phase
- Just one phase from the generator
- large gaps between phase
- Three phase
- Have a connection to each of the three phases
- With this the distance between the peaks decrease and thus you can have more power
- Have a connection to each of the three phases
- Split phase