Electrician's Pocket Manual (Pocket References (McGraw-Hill))

Complete, compact and featuring formulas, tables,
and diagrams in place of lengthy text descriptions, this handy reference
delivers job-essential information in a quick look-up format. The new
Second edition has been updated to include the 2005 National Electrical
Code, new symbols for electrical drafting now being used in CAD
drafting, additional coverage of co-axial cable in home wiring, and more
on electric motors and controls.