Packed with all the updated information from the 2008 National Electrical Code, the 2008 Doctor Watts is the No. 1 Electrical Pocket Guide for electricians. many new NEC tables, formulas, illustrations and detailed examples make this an indispensable reference for anyone working with electricity. This shirt-pocket guide is loaded with essential information for everyday reference. Its heavy laminated pages and built-in tabs make it sturdy and durable enough to stand up to tough on-the-job conditions.