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.

This 2008 edition encompasses new pages containing:

• Numerous new NEC tables
• Formulas with clear, concise explanations of usage
• Detailed reference tables and illustrations
• In-depth examples

All 2008, 2005 and 2002 versions of the Dr. Watts include:

• NEC Tables include Allowable Ampacities, Derating, Burial Depths, Grounding, & Wire-Fill
• Metric Reference Chart
• Basic Electrical, Power, voltage & Transformer Formulas
• Examples depicting bending, transformer installations, branch circuits and GFCIs

Table of Contents:

NEC Tables:

310.16
310.15(B)(2)(a)
300.5, 250.66
250.122
Wire-Fill for EMT NEC Annex C-Table C1

Reference:

Common NEMA Enclosure Types
Metric Essentials for Electricians
NEMA Motor Starter Reference Chart
3-phase A.C. Motor Connections for 9-Lead, Dual-Voltage Motors
Calculating Conduit Bends for Offsets and Saddles

Formulas:

Basic Electrical Formulas
Useful Electrical power Formulas
Common Voltages
Voltage Drop Formulas
Transformer Calculations

Examples:

Derating Ampacities at a Glance More Than a Conductors in a Raceway NEC Article 310
Service Grounding and Bonding at a Glance NEC Article 250
Typical Motor Branch Circuit at a Glance NEC Article 430
Typical Transformer Installation at a Glance NEC Articles 240, 250 & 450
Feeder and transformer Tap Rules at a Glance NEC 240.21
Common GFCI Locations