Designed by a certified building inspector, parts of Code Check (the book) are online. The book was written to go on site to speed work and reduce code violation call-backs and is filled with key, cross-referenced residential construction specs from over 2,500 pages of major U.S. codes. It also covers building, mechanical, plumbing and electrical codes.
The Code Check website is an extensive sample of what is available in the Code Check book. Electrical examples included at this site: sizing electric service, appliances, grounding principles, conduit, swimming pool, questions/answers, and more.