Ugly's Electrical References, 2020: .Ugly’s Electrical References, is the gold standard on-the-job reference tool of choice for electrical industry professionals. Offering the most pertinent, up-to-date information used by electricians, including: updated NEC code and table change information, mathematical formulas, NEMA wiring configurations, conduit bending guide, ampacity and conduit fill information, transformer and control circuit wiring diagrams, and conversion tables. New Features: • Updated to reflect changes to the 2020 National Electrical Code (NEC) • Expanded coverage of the following topics: o Junction Box size calculations o Selecting, testing, and using multimeters to measure voltage, resistance, and current o Selecting, testing, and using a clamp-on ammeter to measure current o Selecting, testing, and using a non-contact voltage tester |
Contents
| 1 | |
| 3 | |
| 5 | |
Combination Circuits | 8 |
Common Electrical Distribution Systems | 13 |
Electrical Formulas for Calculating Amperes Horsepower Kilowatts and kVA | 15 |
To Find Amperes | 16 |
To Find Horsepower | 20 |
Maximum Number of Conductors in Electrical Nonmetallic Tubing | 86 |
Maximum Number of Conductors in Rigid PVC Conduit Schedule 40 | 88 |
Maximum Number of Conductors in Rigid PVC Conduit Schedule 80 | 90 |
Maximum Number of Conductors in Rigid Metal Conduit | 92 |
Maximum Number of Conductors in Flexible Metal Conduit | 94 |
Maximum Number of Conductors in Liquidtight Flexible Metal Conduit | 96 |
Dimensions of Insulated Conductors and Fixture Wires | 98 |
Compact Copper and Aluminum Building Wire Nominal Dimensions and Areas | 100 |
To Find Watts | 21 |
To Find Kilowatts | 22 |
To Find KilovoltAmperes | 23 |
To Find Capacitance | 24 |
SixDot Color Code for Mica and Molded Paper Capacitors | 25 |
Maximum Permissible Capacitor KVAR for Use with OpenType ThreePhase 60Cycle Induction Motors ... | 26 |
Power Factor Correction | 27 |
Power Factor and Efficiency Example | 28 |
To Find Inductance | 29 |
To Find Impedance | 30 |
To Find Reactance | 31 |
DirectCurrent Motors | 32 |
DirectCurrent Motors | 33 |
SinglePhase AlternatingCurrent Motors | 34 |
SinglePhase Motor Using Standard ThreePhase Starter | 35 |
SinglePhase Motors | 36 |
Running Overload Units | 38 |
ThreePhase AlternatingCurrent Motors | 39 |
ThreePhase AC Motors | 40 |
Motor and Motor Circuit Conductor Protection | 41 |
Motor Branch Circuit and Feeder Example | 42 |
LockedRotor Indicating Code Letters | 43 |
Maximum Motor LockedRotor Current in Amperes Single Phase | 44 |
ThreePhase AC Motor Windings and Connections | 45 |
ThreeWire StopStart Station | 46 |
Two ThreeWire StopStart Stations | 47 |
HandOff Automatic Control | 48 |
Jogging with Control Relay | 49 |
Inductance Negligible | 50 |
Voltage Drop Calculation Examples | 52 |
ShortCircuit Calculation | 53 |
Component Protection | 57 |
SinglePhase Transformer Connections | 58 |
BuckandBoost Transformer Connections | 59 |
FullLoad Currents | 60 |
Transformer Calculations | 61 |
Sizing Transformers | 62 |
SinglePhase Transformer | 63 |
ThreePhase Connections | 64 |
ThreePhase Standard Phase Rotation | 65 |
Transformer Connections | 66 |
Miscellaneous Wiring Diagrams | 69 |
Supports for Rigid Metal Conduit | 70 |
Conductor Properties | 71 |
Three Single Conductors in Conduit | 72 |
Ampacities of Insulated Conductors | 73 |
Ampacity Correction and Adjustment Factors | 77 |
Adjustment Factors | 78 |
Conductor Applications and Insulations | 80 |
Maximum Number of Conductors in Trade Sizes of Conduit or Tubing | 83 |
Maximum Number of Conductors in Electrical Metallic Tubing | 84 |
Thread Dimensions and Tap Drill Sizes | 104 |
Metal Boxes | 105 |
Minimum Cover Requirements 01000 Volts Nominal | 106 |
Minimum Depth of Clear Working Space at Electrical Equipment | 107 |
Minimum Clearance of Live Parts | 108 |
Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment | 109 |
Grounding Electrode Conductor for AlternatingCurrent Systems | 110 |
Grounded Conductor Main Bonding Jumper System Bonding Jumper and SupplySide Bonding Jumper for AlternatingCurrent Systems ... | 111 |
General Lighting Loads by Nondwelling Occupancy | 112 |
Lighting Load Demand Factors | 113 |
Demand Factors for Household Electric Clothes Dryers | 114 |
Demand Loads for Household Electric Ranges WallMounted Ovens CounterMounted Cooking Units and Other Household Cooking Appliances over ... | 115 |
Calculating Cost of Operating an Electrical Appliance | 117 |
Partial 2020 National Electrical Code Summary | 118 |
Field Terms Versus NEC Terms | 124 |
Electrical Symbols | 125 |
Wiring Diagrams for NEMA Configurations | 128 |
NEMA Enclosure Types | 133 |
US Weights and Measures | 137 |
Metric System | 139 |
Decimal Equivalents | 142 |
TwoWay Conversion Table | 143 |
Metals | 146 |
Centigrade and Fahrenheit Thermometer Scales | 149 |
Useful Math Formulas | 150 |
The Circle | 151 |
Fractions | 152 |
Equations | 155 |
Natural Trigonometric Functions | 158 |
Trigonometry | 160 |
Bending Offsets with Trigonometry | 161 |
One Shot Bends | 162 |
90 Bending | 163 |
Offsets | 164 |
90 Conduit Bending | 165 |
Offset Bends | 168 |
90 Bends | 169 |
BacktoBack Bends | 170 |
ThreePoint Saddle Bends | 171 |
Pulley Calculations | 172 |
Useful Knots | 173 |
Hand Signals | 174 |
Electrical Safety Definitions | 176 |
Who Is Responsible for Electrical Safety? | 178 |
LockoutTagout and Electrically Safe Work Condition | 179 |
Shock Protection Boundaries | 180 |
Information Usually Found on an ArcFlash Equipment Label | 181 |
Personal Protection Equipment Guide | 182 |
Alternative Energy | 184 |
Junction Box Sizing | 190 |
Selecting and Test Instruments | 191 |
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Common terms and phrases
access to hazardous Aluminum ammeter ampacity Amperes Amps arc flash Arc-rated AWG/kcmil bend bender bonding jumper Capacitor Centimeter clamp-on ammeter Cubic degree of protection Determine disconnecting Driven Pulley electrical conductors enclosure against ingress energy equipment inside Example Feet FEPB Foot pound force foreign objects falling fraction fuse Horsepower Inches Sq inductance ingress of solid ingress of water kcmil Kilowatt let-through load measure Metal Conduit meter modified motor multimeter multiplier National Electrical Code NFPA 70 Note objects falling dirt Ohms parallel circuit personnel against access PFAH phase power factor protection to personnel protection with respect provide a degree Quincy Radius reactance receptacle resistors respect to harmful short-circuit single-phase solid foreign objects Source Switch Table THHN THHW Three-Phase THWN total resistance Trade Sizes transformer Ugly’s ungrounded conductor colored Volt-Amperes Volts Watts Wet Locations XHHW ΤΗΗΝ


