Ugly's Electrical References is a pocket type book that can be carried in the field or at any location.  This book titled Ugly's Electrical References (9780763790998 / 0763790990) is designed for a ready reference.  Ugly's Electrical References is universal in many countries by all trades and professionals including electrical instructors for easy-to-read formats.
 
Ugly's Electrical References (9780763790998 / 0763790990) has a well rounded sections of commonly needed information for electricians in their hands including:

• Math Formulas
• National Electrical Code (NFPA 70) Tables
  
• Wiring Configurations
• Conduit Bending
• Voltage Drops
• Life-Saving First Aid

Ugly's Electrical References (9780763790998 / 0763790990) has been updated for the National Electrical Code including expansion of the following topics from the table of contents: Combination Circuits,Conductor Properties,Conduit Bending,Conversion Tables,Electrical Formulas,Electrical Symbols,Insulation Charts, Math Formulas, Metric System, Ohms Law,  Parallel Circuits,  Series Circuits,  US Weights and Measures,  Wiring Diagrams.   

Table of contents for Ugly's Electrical References (9780763790998 / 0763790990) is as follows:

1. Ruler - Inch
   
2. Ohm's Law
   
3. Series Circuits
   
4. Parallel Circuits
   
5. Combination Circuits
   
6. Common Electrical Distribution Systems
7. Electrical Formulas
   
8. To Find:
•   Amperes (I)
•   Horsepower (HP)
•   Watts (P)
•   Kilo-Watts (KW)
•   Kilo-Volt-Amperes (kVA)
•   Capacitance (C), and Capacitors
•   Resistor Color Code
•   Power Factor Correction
•   Power Factor/Efficiency Example
•   Inductance (L)
•   Impedance (Z)
•   Reactance Inductive (XL) and Capacitive (XC)
9. Motors:
•   Direct Current:
•     Full-Load Current
•     Direct Current Motors
•   Single Phase (A.C.):
•     Full-Load Current
•     Using Standard Three Phase Starter
•     Single Phase Motors
•   Running Overload Units
•   Branch Circuit Protective Devices
•   Three-Phase Motors (A.C.):
•     Full-Load Current
•     General Motor Rules
•     Branch Circuit & Feeder Example
•     Locked Rotor Tables
•     Motor Windings & Connections
•     Three Wire Stop-Start Station
•     Two Three Wire Stop-Start Stations
•     Hand Off Automatic Control
•     Jogging With Control Relay
10. Transformers:
•   Voltage Drop Calculations
•   Short Circuit Calculations
•   Current Limitation Charts
•   Single-Phase Connections
•   Buck & Boost Connections
11. Full Load Currents
•   Calculations
•   Sizing Transformers
•   Primary & Secondary Amperes
•   Three-Phase Connections
12. Miscellaneous Wiring Diagrams
13. Supports for Conduit
14. Conductor Properties
15. A.C. Resistance & Reactance for 600 Volt Cables
16. Allowable Ampacities of Conductors
17. Ampacity Correction & Adjustment Factors
18. Insulation Charts
19. Maximum Number of Conductors in Conduit/Tubing:
•   General Calculation Procedure
•   Electrical Metallic Tubing
•   Nonmetallic Tubing
•   Rigid PVC Conduit, Schedule 40
•   Rigid PVC Conduit, Schedule 80
•   Rigid Metallic Conduit
•   Flexible Metallic Conduit
•   Liquid tight Flexible Metallic Conduit
•   Dimensions of Insulated Conductors
•   Compact Aluminum Bldg. Wire Dimensions
•   Dimensions & Percent Area of Conduit
20. Tables:
•   Tap, Drill Bit and Hole Saw Tables
•   Metal Boxes
•   Minimum Cover Requirements to 600 Volts
•   Volume Required Per Conductor
•   Vertical Conductor Supports
•   Clear Working Space in Front of Electrical Equipment
•   Minimum Clearance of Live Parts
•   Min. Size Equip. Grounding Conductors
•   Grounding Electrode Conductor
•   General Lighting Occupancy Loads
•   Lighting Load Demand Factors
•   Demand Factors for Non-dwelling
•   Demand Factors - Household Clothes Dryers
•   Demand Factors - Kitchen Equipment
•   Demand Loads - Household Ranges, Ovens
•   Cost of Operating Electrical Appliance
•   Calculations for Energy Saving Lamp
•   Partial 2008 NEC Code Change Summary
•   Field Terms vs. NEC Terms
•   Electrical Symbols
• Wiring Diagrams
• NEMA Enclosure Types
21. General Reference:
•   U.S. Weights & Measures
•   Metric System
•   Metric Designator - Trade Size Equivalents
•   U.S. Weights & Measures/Metric Equivalents
•   Useful Conversions
•   Scientific Notation
•   Decimal Equivalents
•   Conversion Tables
•   Metals
•   Specific Resistance (K)
•   Centigrade & Fahrenheit Thermometer Scales
22. Math Reference:
•   Useful Math Formulas
•   The Circle
•   Fractions
•   Equations
•   Trigonometry
23. Conduit Bending:
•   Bending Offsets With Trigonometry
•   Chicago-Type Benders - 90^ο Bending
•   Chicago-Type Benders - Offsets
•   Multi-Shot 90^ο Bending
•   Hand Bender - Offsets
•   Hand Bender - 90^ο Bends
•   Hand Bender - Back-to-Back Bends
•   Hand Bender - 3-Point Saddle Bends
24. Miscellaneous Reference:
•   Pulley Calculations
•   Useful Knots
•   Hand Signals for Cranes
25. Electrical Safety:
•   Definitions
•   Checklist
•   Lockout/Tagout
•   Shock Protection Boundaries
•   Warning Label
•   Personal Protection Equipment Guide
1. General First Aid
2. Calendars
3. General Topic Index
4. Ruler - Metric