Recommended · for beginners
How Three Phase Electricity works - The basics explained
Why people recommend it
A clear explanation of why mains power is generated and distributed as three phases, often linked for anyone confused about phase offsets and line voltages.
Watch for: One commenter suggests skipping to about three minutes in
In their words
I had the same question and I found this amazing video where it is explained.
Kanabos on electronics.stackexchange.com, Jan 2023. CC BY-SA.