So I wanted to comment on the phase shift question concerning single phase to three phase. I am an experienced mill electrician, I also have a 2 yr degree in Electronics Technology from 1987. I am in the southern U.S., in Louisiana. In my area the local utility can supply customers with two different kinds of three phase. One is what you might call "true" three phase, the other is what we call "Wild leg". "True" has 120/120/120/208, "Wild" has 120/120/212/240. "True" comes from three primary phases (13,800V in this area) and one transformer per primary phase on the pole. They are 120 degrees out of phase to add up to a full circle of 360 degrees. "Wild" only needs two transformers; the normal 120/120/240, that we see in our homes which are 180 degrees out of phase to add up to 360 and are derived from a single primary phase; and a second transformer that produces 212V to neutral or ground from the same primary phase and is only 90 degrees out of phase from the 120/240 legs, however phase to phase is 240V.
Now for the mind bending part: If you connect a three phase motor (designed for normal balanced three phase ie: {208 or 230 or 240}) to single phase 230V or 240V and use the correct capacitor start circuit, it will start and run and generate the same "wild leg" voltage on it's un-powered leg. But if you apply the correct run capacitor circuit it will produce a balanced three phase voltage (what ever it was designed for in that voltage range). That adjustment is not 90 degrees, it is 30 degrees. See the attached pic for a bit more info/explanation.
I am not saying this is a technical explanation, I am not saying the drawing is technically correct, please don't call me down on technicalities, I know I am not an engineer and don't claim to be one.
However, this is what actually happens.
Now for the really bad part of this post, I just noticed that this thread is from 2013, I just got to this forum 5 days ago and haven't gotten used to the fact that ya'll take so long to talk about things.
posting anyway LOL