Can anyone give some tips on the best way to learn electrical theory. I have tried a few theory books from my friend who is a electrical engineer, but the books are very complex and I just want to learn the basics.

I am a project engineer for a contractor and do not need to know a lot of theory, but I figure knowing it will help more than hurt.

Thanks!

Really depends on what you need to know of "the basics", electrical theory, or practical installations, code, what exactly. There is a great deal of information, that really should be learned in order, otherwise, you can run into something that will make no sense if something was skipped.

Ugly's Reference came to mind, has a bit of the most used concepts, but does not really explain too much as by the time you need one of these there is an understanding and just reference is needed.

A very good all around book with a brief description of theory, formulas, practical installation, etc. is the American Electricians Handbook.

Thanks for the response. I'm really trying to learn how to circuit. I have some basic knowledge, but now I am starting to deal with single lines, underground, emergency power, bussduct, etc. I really need to know electrical is terms on construction.

You know what may be helpful for what your looking for, is to get the booklet of requirements from the local electric utility, and get a couple of manufacturers catalogs, such as the GE BuyLog, Square D Digest, and a Thomas and Betts (T&B), Dual Lite, Hubbell Wiring Devices, Leviton, for examples.

Stop in a couple of local electrical distributors and they will be glad to give you any catalog they have.
With these you will see all the various materials, and several have information as to how to install or use what they offer.