Basic
Electric DC Calculation
DVD # 1
- 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
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LE-WM-DVD4555-08
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Basic
Electric AC Calculation
DVD # 2
- 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
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LE-WM-DVD4556-08
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Residential Wiring Code
DVD # 3
- 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
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LE-WM-DVD4557-08
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Residential Service Calculations
DVD # 4
- 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
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LE-WM-DVD4558-08
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Commercial & Industrial Service Calculations
DVD # 5
- 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
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LE-WM-DVD4559-08
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Ampacities & Derating
DVD # 6
- 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 Receptacle vs. Lighting Circuits
- 60°, 70°, 90°C Insulation Application Limitations
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LE-WM-DVD4560-08
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Overcurrent Protection, Continuous Loads, Transformers and Tap Rules
DVD # 7
- 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
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LE-WM-DVD4561-08
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Understanding Grounding Part 1: Systems and Services
DVD # 8
- 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
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LE-WM-DVD4562-08
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Understanding Grounding
Part 2: Circuits and Equipment
DVD # 9
- 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
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LE-WM-DVD4563-08
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Raceways,
Boxes & Cabinets: Fill and Dimensions
DVD # 10
- 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
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LE-WM-DVD4564-08
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Motor
Circuits: Understanding Article 430
DVD # 11
- 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 Calculations
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LE-WM-DVD4565-08
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Understanding the Second Half of the Code
DVD # 12:
- 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
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LE-WM-DVD4566-08
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