Construction Electrician/Industrial Electrician/Power Electrician
Common Core – Level 2
Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B1 Commercial Electrical Code
Level: Two
Duration: 60 hours
Theory: 60 hours
Practical: 0 hours
Overview:
This unit is designed to provide the apprentice with the knowledge about the commercial electrical code. The unit
begins with coverage of commercial wiring methods, wiring devices and system voltages and circuitry. Part of the
unit covers raceway fill and branch circuit calculations. Finally, the unit covers single conductor cable and single
and three phase motor installations.
Percent of
Objectives and Content: Unit Mark (%)
1. Describe commercial system voltages and circuitry. 10%
a. Single phase 3-wire system
b. Three phase 4-wire system
c. Potential circuit problems
d. Branch circuits, feeders and service conductors
2. Describe commercial wiring installation and maintenance. 20%
a. CEC requirements
b. Conductors, cables, raceways and flexible cords
Ampacities
Derations
Conditions of use
Metallurgy (compatibility of materials)
c. Bonding and grounding
d. Ground fault systems
e. Perform related calculations.
Voltage drop calculations
Conductor derating calculations
3. Describe commercial wiring devices and applications. 15%
a. CEC requirements
b. Outlet and junction boxes
Sizes
Types
Applications
Box fill calculations
Pull box calculations
1 Rev. June 2017
c. Receptacles
d. Switches
e. Luminaires
f. Specialty outlets
g. Lighting standards (pole), such as
Parking lot lighting
Traffic lighting
Street lighting
4. Perform raceway fill calculations. 10%
a. CEC requirements
b. Surface
c. Under floor
d. Conduits
e. Cellular
5. Describe commercial loads and related CEC branch circuit calculations. 20%
a. Electric range
b. Electric dryer
c. Electric hot water tank
d. Electric space and surface heat and heating control requirements
Installation and maintenance
e. Special purpose outlets
f. Convenience outlets (lights, receptacles)
g. Automobile receptacle installations
6. Describe single conductor cable installations. 10%
a. CEC requirements.
b. Paralleling requirements
c. Installation configurations
d. Perform related calculations
7. Describe single and three phase motor installations. 15%
a. CEC requirements.
b. Commercial applications
c. Perform related calculations for single and groups of motors
Conductors
Overcurrent
Overload
Disconnecting means
***
2 Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B2 Commercial Code Applications
Level: Two
Duration: 60 hours
Theory: 45 hours
Practical: 15 hours
Overview:
This unit is designed to provide the apprentice with the skills for commercial code applications. The unit begins
with coverage of emergency systems and single phase and three phase commercial service installations. Part of
the unit covers commercial service calculations, blueprint use and single phase transformers. Finally, the unit
covers installation techniques for conduit and tubing and Voice Data Video structured cabling systems.
Percent of
Objectives and Content: Unit Mark (%)
1. Describe the installation and maintenance of emergency systems. 15%
a. CEC requirements
b. Unit equipment (battery banks)
c. Generators
d. Uninterrupted power supply (UPS)
e. Exit lighting and signage
2. Describe single phase and three phase commercial service installations. 15%
a. CEC requirements
b. Overhead
c. Underground
d. Customer service termination enclosures (CSTE)
e. Remote metering
f. Meter stacks
g. Bonding and grounding requirements
3. Perform commercial service calculations. 20%
a. CEC requirements
b. Apartment blocks and row housing
c. Other types of occupancies, including:
Storage warehouse
Office building
Retail stores
4. Interpret and demonstrate use of blueprints for commercial applications. 10%
a. Symbols and terminology
b. Specifications
3 Rev. June 2017
c. Riser and single line diagrams
d. Architectural, mechanical and electrical drawings
5. Demonstrate and perform conduit and tubing installation practices for commercial 15%
applications.
a. Cutting
b. Bending
c. Threading
d. Deburring
6. Describe Cathodic protection. 5%
a. CEC requirements
b. Applications and operation
c. Testing and maintenance
7. Describe single phase transformers (extra low and low voltage). 15%
a. CEC requirements.
b. Commercial applications
c. Nameplate data (system voltages and currents, and kilo Volt-Amps (KVA)
d. Perform related calculations.
Conductors
Overcurrent
e. Installation and maintenance
8. Describe renewable energy systems. 5%
a. CEC requirements
b. Wind (turbines)
c. Solar (photovoltaic cells)
d. Tidal
***
4 Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B3 AC Fundamentals
Level: Two
Duration: 90 hours
Theory: 90 hours
Practical: 0 hours
Overview:
This unit is designed to provide the apprentice with the knowledge about AC fundamentals. The unit begins with
coverage of AC terminology and basic concepts, types of AC components and AC power. Part of the unit covers
calculations for series, parallel and combination AC circuits. Finally, the unit covers power factor correction
calculations.
Percent of
Objectives and Content: Unit Mark (%)
1. Define terminology and basic concepts related to sinusoidal alternating current 10%
(AC).
a. AC voltage and current.
AC generation
Polarity
Waveform (frequency, time, degrees, radians)
Vector (phasor) relationship
b. Perform related calculations
Instantaneous values
Average
Peak
Root mean squared (RMS)
2. Describe types of AC components. 20%
a. Resistance
Effective
b. Inductors
Inductance
RL time constants
Inductive reactance
c. Capacitors
Capacitance
RC time constants
Capacitive reactance
3. Describe AC Power. 15%
a. Instantaneous, apparent, true and reactive power.
5 Rev. June 2017
b. Power measurement
c. Perform related power calculations
Apparent power
True power
Reactive power
Power factor
4. Describe and calculate series AC circuits. 20%
a. Series AC circuit
Total impedance
Resistive inductive (RL)
Resistive capacitive (RC)
Resistive inductive capacitive (RLC)
b. Perform related calculations using
Ohm's Law, complex numbers, Kirchoff`s Voltage Law (KVL) and Voltage Divider
Rule (VDR) for voltage, current and power.
c. Sketch the power triangle and use it to solve power problems
d. Power factor
e. Represent voltage and current relationships using vector (phasor) diagrams
5. Describe and calculate parallel AC circuits. 20%
a. Parallel AC circuit
Total impedance
RL
RC
RLC
b. Perform related calculations using
Ohm's Law, complex numbers, Kirchoff`s Current Law (KCL) and Current Divider
Rule (CDR) for voltage, current and power.
c. Sketch the power triangle and use it to solve power problems.
d. Power factor.
e. Represent voltage and current relationships using vector (phasor) diagrams
6. Describe and calculate combination AC circuits. 5%
a. Combination AC circuit
Total impedance
RL
b. Perform related calculations
c. Sketch the power triangle and use it to solve power problems.
d. Power factor.
e. Represent voltage and current relationships using vector (phasor) diagrams
7. Describe and calculate power factor correction. 10%
***
6 Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B4 Motor Controls
Level: Two
Duration: 70 hours
Theory: 40 hours
Practical: 30 hours
Overview:
This unit is designed to provide the apprentice with the knowledge about motor controls. The unit begins with
coverage of basic motor control and control devices. Part of the unit covers other motor control concepts,
including relays, starters and timers. Finally, the unit covers schematic diagram interpretations and installation
techniques.
Percent of
Objectives and Content: Unit Mark (%)
1. Describe basic motor control. 20%
a. Purpose
b. Safety hazards
c. Types
Two wire control
Three wire control
d. Motor control diagrams and symbols
Wiring
Schematics (line)
Conventions
e. Overcurrent protection
2. Describe control devices. 10%
a. Purpose
b. Types
Pushbuttons
Selector switches
Pilot (end) devices, including float, flow, limit and pressure switches
Sensors, including flow and pressure
c. Operation
d. Ratings
3. Describe overload relays. 5%
a. Purpose
b. Types
Thermal
Magnetic
7 Rev. June 2017
c. Operation
d. Ratings
e. Placement in power and control circuit
4. Describe contactors and motor starters. 10%
a. Purpose
b. Types
National Electrical Manufacturers Association (NEMA)
International Electrotechnical Commission (IEC)
c. Operation
d. Components and terminal markings
e. Ratings
Contact (load and auxiliary)
Coil
f. Reversing starter
Mechanical interlocking
Electrical interlocking
g. Control transformers
5. Describe control relays and timers. 10%
a. Purpose
b. Operation
c. Ratings
Coil
Contact
d. On delay / Off delay
6. Design and interpret schematic diagrams for motor controls. 20%
a. Pushbuttons and selector switches
b. Pilot devices
7. Perform installation, testing, troubleshooting and maintenance techniques using 25%
schematic or wiring diagrams.
a. Control projects, including:
Stop and start
Jogging
Reversing
Sequence
Timing
b. Testing, troubleshooting and maintenance techniques
Meter selection and placement
Meter reading
Logical testing procedure
***
8 Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B5 Electronic Concepts I
Level: Two
Duration: 40 hours
Theory: 30 hours
Practical: 10 hours
Overview:
This unit is designed to provide the apprentice with introductory knowledge about electronic concepts. The unit
begins with coverage of semiconductors and diodes. Part of the unit covers rectification, filtering and voltage
regulation. Finally, the unit covers application of electronic concepts.
Percent of
Objectives and Content: Unit Mark (%)
1. Describe semiconductors. 10%
a. Atomic structure
b. Temperature effects
c. P and N type materials (majority and minority carriers)
2. Describe diodes. 25%
a. Purpose and applications
b. Types
Junction diode
Light emitting diode (LED)
c. Schematic symbols
Anode
Cathode
d. Conductivity
Forward bias
Reverse bias
e. Operating characteristics
Characteristic curves
Voltage drop
3. Describe rectification. 25%
a. Purpose and applications
b. Types
Half wave
Full wave
Full wave bridge
c. Performs related calculations
9 Rev. June 2017
4. Describe filtering. 5%
a. Purpose and applications
b. Types
Capacitors
Inductors
c. Performs related calculations
5. Describe voltage regulation. 10%
a. Purpose and applications
b. Zener diode
Schematic symbol
Terminal connections
Breakdown region (reverse voltage)
Power dissipation
c. Purpose of current limiting resistor
d. Performs related calculations
6. Demonstrate and apply electronic concepts. 25%
a. Use an oscilloscope to measure various AC and DC voltages
b. Test a diode
Ohmmeter
Digital diode tester
c. Measure the voltages in filtered and unfiltered circuits
d. Measure the voltages in a regulated circuit
e. Troubleshoot common rectifier power supply malfunctions
***
10 Rev. June 2017
Construction Electrician/Industrial Electrician/Power Electrician
Unit: B6 DC Machines and Controls
Level: Two
Duration: 30 hours
Theory: 25 hours
Practical: 5 hours
Overview:
This unit is designed to provide the apprentice with the knowledge about DC machines and controls. This unit
covers DC generators, DC motors and motor controls.
Percent of
Objectives and Content: Unit Mark (%)
1. Describe installation and maintenance of DC generators. 40%
a. Types
Series
Shunt
Compound
b. Purpose and applications
c. Operating characteristics
d. Armature reaction
e. Voltage regulation
f. Voltage control
g. Terminal markings and schematics
h. Commutation
i. Field excitation
j. Perform related calculations
2. Describe installation and maintenance of DC motors 40%
a. Types
Series
Shunt
Compound
b. Purpose and applications
c. Operating characteristics
Field loss for a shunt
Load loss for a series
Above and below speed control
Speed regulation
Reversing the direction of rotation
d. Armature reaction
e. Terminal markings and schematics
11 Rev. June 2017
f. Hazards associated with differentially compounded DC motors
g. Perform related calculations
3. Describe installation and maintenance of DC motor controls. 20%
a. Across the line starting methods used for DC motors
b. Various methods for controlling armature in rush current
c. Purpose of shunt field failure relays
d. Connect control and power circuits for DC motors that incorporate
Across the line starting
Definite time acceleration
Counter EMF acceleration
Above and below normal speed control
***
12 Rev. June 2017
