Ugly's Electrical References
"I'm a HVAC controls guy. I can calculate FtWC into PSI in my head but I have problems going from amps and volts to watts in a three phase system - or at least I did before I found Ugly's Electrical Reference by George and Sammy Hart. Yeah, it's called Ugly's. This pocket-sized reference book has every electrical formula you will ever need, written for a journeyman electrician. It starts with Ohms Law wheel, goes into series and parallel circuits and progresses on to the trig you need to bend conduit. It has HP:Amp tables, motor control diagrams, wire size and conduit fills, the works. I've bought over a dozen copies for my coworkers and customers. The latest version came out in 1999. They update it every three years or so. Check it out and add it to your list!" And so I did.