I've been in a few arguments about electricity here. I find that people have misconceptions, or baseless theories they present as fact, that they refuse to let go of, and refuse to fact check. I'm trying to present evidence based facts (or theories, since that's what they are).
If you're unwilling to fact check yourself, why bother even reading. You've defined yourself as ignorant and unwilling to learn.
In general, I suggest a search of Ohm's Law, the guiding principal of all things electrical. I'll treat it as fact since, well, we have lights in the house.
When we get to home A/C same story as above.
OH states that we have 3 bits to think about; E, I, and R, which are electromotive force, measured in Volts (think pressure), intensity, measured in Amperes (think flow), and resistance measured in Ohms (duh). This is math. It still applies across all electrical thought.
The equation is E=IR, or V=AR if you want to think in units. This is often presented as the (and I may not present it well) EIR triangle.
Think of it like this is money, less money, less spending. Money is voltage, spending is current. More voltage, more current.
Or, resistance, you're voltage (pressure), the wife/GF says no way (resistance). Less resistance, more spending. Yay.
To start, electricity in the world is alternating current, and a guy named Tesla brought it to us.
Then we have the single phase vs. 2-phase argument. This is a household not commercial issue. The fact is 240 is single phase and 120 is split phase
grounded at the center tap at the transformer at the pole. the difference is the confusion the split and 2 are the same and the electrical reference point. to be true you have to move the reference. 240 has only a safe/short ground. it isn't current carrying, thus not part of the conversarion.
A little sine wave BS is needed for this. A link to how stuff works.
The 2-phase argument says two voltages of 120V (or whatever) 180 degrees (360 total) out of phase add to make 240V, which is easily proven untrue. The premise is
Subtract 1-1=2 and you find the fallacy.
Clap your hands and you prove the 180 degree theory is a fallacy.
Think of wave theory. Does a wave trough meet a wave peak and make a double, wait peak or trough, who wins? The suggestion proves itself to be nonsense.
I'll be entertained by BS posted by folks who believe, but can't prove, and so believe that they can't fact check. Seriously, fact checking ourselves is easy, do we believe ourselves so correct that another opinion won't be thought to be a possiblity? The death of thoght, compromise, yada, yada, yada.