I recently got a position with a pretty awesome company. Ill be able to finally start putting all of the stuff I learned in school into place in the real world because I'll be working with a crew of refrigeration mechanics on refrigeration equipment instead of just being an air cundishnin guy- LOL
No offense intended to anyone out there, HVAC has been good to me so far throughout my apprenticeship and I have learned a lot, but let's face it; most guys who work on roof tops for a living don't even know what a subcooling valve is or the difference between a current relay or a potential relay- I know this because that was me except for the few weeks in school when I tried to absorb as much as possible.
All that being said, I guess I should get to to the point of this thread- understanding inductive and capacative loads. So, I can understand pretty well on a graph or chart that the voltage leads by 90* in a purely inductive circuit, the current leads by 90* in a purely capacative, and that in a purely resistive circuit they're in phase..........but what the hell does this mean in the real world? Maybe a better way to ask this question would be, "What kind of resources can ANYONE recommend for helping a guy to understand vectors and impedance and capacitance outside of black and white friggin charts in a text book. I can run the calculations and size my caps and figure out power factors etc, etc..........but I have always seemed to have a disconnect between seeing it on paper, which I think i can grasp relatively easily, and seeing it in a mechanical room or with the motor in front of me.
I think most of you senior techs can understand now why I felt the need to post my recent career change details at the beginning of this thread now: you basically need not even care about this stuff if you're just changing out oem parts on rooftops all day long between flipping filters.
Again, anyone who knows of some good resources via a good electrical website or even a good RSES book or publication (Im a proud and participating member).......please feel free to hook a young dumb apprentice up!
Thanks for all the help guys.......stay tuned for more questions from a hopeful young fridgie.