Mastering the NEC DVDs are designed to help electricians, designers, supervisors, contractors and maintainers understand the NEC. The DVDs can be used to train and re-train electrical staff.

The twelve DVDs are packed with updated information that affect your daily work.

Included in the set:

Basic Electric DC Calculation DVD # 1

Topics covered:

• Understand Electrical Theory
• Being an Installer vs. Being an Electrician
• What is Electricity?
• Amps
• Volts & Resistance
• Hydraulic Analogy
• Ohm's Law
• Wattage & Power
• Ohm's Law & Power Formula Combined
• Series Circuits
• Power In Series Circuits
• Parallel, Series/Parallel
• Voltage
• Amperage & Resistance in Parallel Circuits
• Single Phase Neutrals
• Open Neutrals in 120V Circuits
• Neutrals in 3-Phase Circuits

Basic Electric AC Calculation DVD # 2

Topics covered:

• AC vs. DC
• Single Phase & Three Phase Power
• Single phase 120/240 Volt Power Systems
• 3 Phase Systems: 480 & 480/277 Volt Grounded & Ungrounded
• 240/120 Volt
• 3-Phase Delta & 208/120 Volt
• 3-Phase Wye.
• 3-Phase Power Calculations
• Voltage Drop, Power Factor
• Motor Efficiency
• Single Phase Transformers
• 3-Phase Transformers
• Single Phase Neutral Current Hazards
• 3-Phase Wye Systems
• Harmonics

Residential Wiring Code DVD # 3

Topics covered:

• Receptacle Requirements
• Kitchen & Bathroom Receptacles
• Ground-Fault Circuit-Interrupters
• Arc-Fault Circuit-Interrupters
• Lights
• Switches & Fixtures
• Appliances
• Ranges & Dryers
• Protection of Cables
• Branch Circuit & Receptacle Loads
• Maximum Permitted Loads
• Clearances
• Services
• Smoke Alarms
• Requirements Affecting Existing Houses

Residential Service Calculations DVD # 4

Topics covered:

• General vs. Optional Calculation Methods
• Dwelling Unit Square Footage
• Appliance Circuits
• Air Conditioners
• Window vs. Central A/C Load Calculations
• Sample General Calculation
• Use of Demand Factors & Deductions
• Overall Service Size
• Sample Optional Calculation
• Electric Range Calculations
• Sample Multi-Family Dwelling Load Calculation
• Multi-Family Dwelling Using the Optional Calculation Method

Commercial & Industrial Service Calculations DVD # 5

Topics covered:

• Calculated vs. Estimated Loads
• Office Suite Calculation, Calculating Lightning Loads
• Recessed, Track & Supplementary Lighting
• Calculating Non-Lighting Loads
• Demand Factors, Branch Circuit & Feeder Sizing
• Commercial Cooking Equipment: Restaurants
• Feeder & Service Neutral Sizing
• Store Calc
• Motor Feeder Calc
• Industrial Building Calc
• Industrial Service Conductor Sizing
• Welder Branch Circuits & Feeder Calc

Ampacities & Derating DVD # 6

Topics covered:

• Ampacity Tables
• Insulation Ratings
• Number of Conductors
• Wiring Insulation Dictionary
• Ampacity Table Values & Footnotes, Ambient Temp
• Corrections
• Derating Factors & Examples
• Derating vs. Conduit Fill
• Maintaining Spaces Between Conduits
• Derating & Neutrals
• Ampacity vs. Overcurrent Protection
• Overcurrent Protection for Recepticle vs. Lighting Circuits
• 60°, 70°, 90°C Insulation Application Limitations

Overcurrent Protection, Continuous Loads, Transformers and Tap Rules DVD # 7

Topics covered:

• Overcurrent Protection
• Protection of Transformer Secondary Conductors
• Standard Fuse & Circuit Breaker Sizes
• Feeder Tap Rules
• Overcurrent Protection for Transformers Equal to or Less Than 600 Volts
• Transformer Overcurrent Protection for Transformers Over 600 Volts and Transformer Secondaries
• Transformer Tap Rules
• Multiple Transformer Taps
• Continuous Load Calculations: Conductor Size vs. Fuse or Circuit Breaker Size
• Derating & Overcurrent Protection
• Ground-Fault Protection

Understanding Grounding Part 1: Systems and Services DVD # 8

Topics covered:

• Understanding Electrical System Grounding
• System Grounding vs. Equipment Grounding
• Current Flow in a Grounding System
• Definitions of Grounding Terms
• Table 250.66 vs. Table 250.122
• Grounding Electrodes
• Ground Rods
• Equal Potential Grounding
• Sizing of Service Grounding Conductors
• Which Electrical Systems Require Grounding
• Grounding Services
• Service Equipment & Raceway Bonding
• Installation of Grounding Electrode Conductors
• Separately Derived Systems
• Grounding & Bonding for Distribution Transformers & Generators

Understanding Grounding Part 2: Circuits and Equipment DVD # 9

Topics covered:

• Principles of Safe Equipment Grounding
• Recognized Grounding Connectors
• Receptacle Grounding
• Connections to Boxes & Receptacles Isolated Ground Receptacles
• Sizing Equipment Grounding Conductors
• Sizing for Parallel Conduit Runs
• Sizing for Voltage drop
• Code Recognized Grounding Conductors
• Hazardous Location Grounding
• Grounding of Transformer Secondaries
• Grounding Circuits at Separate Buildings
• Range & Dryer Grounding
• Grounding Old Two-Wire Installations

Raceways, Boxes & Cabinets: Fill and Dimensions DVD # 10

Topics covered:

• Definitions
• Conduit Fill & Tables
• Percentage Fill & Excessive Heat, Wire & Conduit Dimension tables
• Conduit Fill for Mixed Conductor Sizes
• Outlet Box Wire Fill
• Pull Box Sizing
• Cabinet & Panel Wiring Spaces
• Splicing & Passing through Panelboard & Disconnects
• Calculating the Expansion & Contraction of PVC Conduits
• Fittings that allow for Movement

Motor Circuits: Understanding Article 430 DVD # 11

Topics covered:

• Example Typical Motor Nameplate: Horsepower, Voltage, Service Factors, Code Letters & Amperages
• Motor Amperage
• Voltage & Service Factor
• Example of a Typical Motor Circuit
• Table of 430.147 to 430.151
• Motor Circuit Conductor Sizing
• Motor Overload Protection
• Short Circuit Protection
• Sizing Fuses & Circuit Breakers
• Motor Feeder Protection
• Motor Control Circuits
• Motor Controllers
• Motor Control Centers
• Motor Circuit Calcs

Understanding the Second Half of the Code DVD # 12

Topics covered:

• Emergency vs. Standby Systems
• Permitted Sources of Power for Emergency Systems
• Exit Lights & Emergency Lights, Separate Emergency Wiring Systems
• Separate Conduit Systems & Transfer Switches
• Places of Public Assembly, Hazardous Location Fundamentals
• Class I Hazardous Locations, Permitted Wiring Methods
• Class II Hazardous Location Fundamentals
• Intrinsically Safe Wiring
• Class I, Zone Locations
• Gasoline Dispensing Stations
• Paint Spray Booths
• Health Care Facilities
• Swimming Pools
• Hot Tubs
• Spas, Fountains
• Grounding & Bonding Around Pools