Re: Design Methods.
I'm not sure exactly what you're looking for but...I have a good book that walks you through the design of a commercial project for power and lighting. It's writen by Ayraud and Thumann titled, "Introduction to Efficient Electrical Systems Design" It's a bit dated but a good starting point as to what to expect, time req'd, design conciderations etc. I'm sure Mike Holt has some lit. too. Best of luck.