I'm confused regarding 3 phase systems.
In some texts I have seen three independent and separate sources. In some YouTube videos I have also seen the same, especially in software simulation, but in some other scenarios I have seen one source and three wires.
I am very confused. What actually happens in a 3 phase system?
Is there one source, out of which there are three wires, each having separate phase, or are there three separate and independent sources each having its own one wire?