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Electrical Grade 11 Curriculum Framework Upper Cape Cod Technical School © 2011 Developed by: The Center for Occupational Research and Development (CORD) for Upper Cape Cod Technical School To ask questions or request additional information regarding these materials, please contact: Holly Doughty Research Associate, CORD [email protected] 254-741-8310 www.cord.org CORD assumes no liability with respect to the use of, or for damages resulting from the use of, any information, apparatus, method, or process described in this publication. 2 Contents Course Overview ............................................................................................................. 5 Course Alignment Matrix ................................................................................................. 7 Course Scope and Sequence ........................................................................................ 19 Occupational Analysis ................................................................................................... 35 3 4 Course Overview COURSE PHILOSOPHY Upper Cape Cod Technical School’s Electrical program uses shop simulations, laboratory experiments and field work to teach students how to install state-of-the-art electrical equipment for light, heat, power, data and telecommunications in commercial, industrial and residential buildings. Throughout the program at Upper Cape Tech, students work on projects that provide authentic workplace experiences and develop skill sets. Major topics addressed in the program (grades 10–12) include: Electric code Electrical safety Print reading Overcurrent protection Conductor properties Electrical theory Electrical test equipment Raceways, boxes, and fittings Conductor properties and installation Motors Grounding Safety switches Hand and power tool use Transformers AC wiring and applications DC wiring and applications Wiring for low voltage and controls CAD (computer assisted drafting) Industrial health and safety This program offers 2,200 of the 8,000 practical work hours required by Massachusetts to become eligible for the state licensing examination for electricians. Students are also prepared to attend a wide variety of two- or four-year colleges that offer training as an electrical technician or an electrical engineer. RELATED BUSINESS AND INDUSTRY EXPECTATIONS Careers in electrical technology may range from electrician apprentice/helper to journeyman or master electrician, cable employee, electrical sales, electrical maintenance, utility company trainee, or electrical engineering. The following organizations provide industry awareness and information on licensure in the state of Massachusetts. Board of State Examiners of Electricians http://www.mass.gov/?pageID=ocasubtopic&L=4&L0=Home&L1=Licensee&L2=Division+of+Professi onal+Licensure+Boards&L3=Board+of+State+Examiners+of+Electricians&sid=Eoca National Fire Protection Association (National Electrical Code) http://www.nfpa.org/aboutthecodes/AboutTheCodes.asp?DocNum=70&cookie_test=1 Massachusetts Electrical Code http://www.lawlib.state.ma.us/source/mass/cmr/cmrtext/527CMR12.pdf Electrical Careers http://www.electricianeducation.com/career/electrical_careers.htm 5 6 Course Alignment Matrix 7 Electricity Strand 2: Technical Knowledge and Skills 9 2.A 2.A.01c 2.A.02c 2.A.03c 2.A.04c 2.A.05c 2.A.06c 2.A.07c 2.A.08 2.A.09 2.A.10 2.B 2.B.01 2.B.02 2.B.03 2.B.04 2.B.05 2.C 2.C.01 2.C.02 2.C.03 2.C.04 2.C.05 2.C.06 2.C.07 2.C.08 2.D 2.D.01 2.D.02 2.D.03 2.D.04 2.D.05 Read and interpret prints. Explain the basic layout of a set of prints as well as the importance of the accompanying job specifications document. Recognize and identify basic print terms, abbreviations, line types, symbols and notes. Interpret and follow drawing dimensions. Determine true measurements from a print using an architect’s scale. Read and interpret plan, elevation, section and detail views and schedules. Identify, develop and complete material quantity takeoff sheets. Discuss how state and/or local code requirements apply to prints. Layout and convert schematic diagrams to wiring diagrams. Layout and convert wiring diagrams to schematic diagrams. Utilize software for control circuit drawing. Demonstrate the use of tools, fasteners, and equipment. Demonstrate and explain the use of threaded fasteners. Demonstrate and explain the use of nonthreaded fasteners. Demonstrate and explain the use and types of anchors. Install fasteners and anchors. Demonstrate safe operation of power and powder actuated tools. Illustrate basic concepts of electrical theory. Explain what atoms are and how they are constructed. Define voltage and identify the ways in which it can be produced. Explain the difference between conductors and insulators. Define the units of measurement that are used to measure the properties of electricity. Explain how voltage, current, and resistance are related to each other. Using the formula for Ohm's law, calculate an unknown value. Explain the different types of meters and equipment used to measure voltage, current, resistance, and power. Using the power formula, calculate the amount of power used by a circuit. Illustrate advanced concepts of electrical theory. Explain the basic characteristics of a series, parallel and combination circuit. Calculate, using Kirchhoff's voltage law, the voltage drop in series, parallel, and combination circuits. Calculate, using Kirchhoff's current law, the total current in series, parallel, and combination circuits. Find the total amount of resistance in series, parallel, and combination circuits. Calculate the peak and effective voltage or current values for an AC waveform. 9 10 11 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 12 9 2.D.06 2.D.07 2.D.08 2.D.09 2.D.10 2.D.11 2.D.12 2.D.13 2.D.14 2.D.15 2.E 2.E.01 2.E.02 2.E.03 2.E.04 2.E.05 2.E.06 2.E.07 2.E.08 2.E.09 2.E.10 2.E.11 2.E.12 2.E.13 2.F 2.F.01 2.F.02 2.F.03 2.F.04 2.F.05 2.F.06 2.F.07 2.F.08 2.G 2.G.01 2.G.02 Calculate the phase relationship between two AC waveforms. Describe the voltage and current phase relationship in a resistive AC circuit. Describe the voltage and current transients that occur in an inductive circuit. Define inductive reactance and state how it is affected by frequency. Describe the voltage and current transients that occur in a capacitive circuit. Define capacitive reactance and state how it is affected by frequency. Explain the relationship between voltage and current in RL AC, RC AC, LC AC, and RLC AC circuits. Explain true, apparent, and reactive power as they relate to AC circuits. Explain 'power factor' as it relates to AC circuits. Explain the use of surge protection and UPS systems. Use electrical test equipment. Perform measurement of current using the ammeter/clamp-on. Perform measurement of voltage using the voltmeter. Perform measurement of resistance using the ohmmeter. Measure circuit properties using the volt-ohm-multimeter (VOM). Measure power using the wattmeter. Explain the operation of and describe the megohmmeter. Explain the operation of and describe the induction tester/proximity tester. Determine the state of a circuit using a continuity tester. Explain the operation of and describe the voltage tester. Explain the operation of and describe the circuit tracer. Read and convert from one scale to another on all types of common test equipment. Connect a meter using proper meter polarity. Compare and contrast digital and analog meters. Explain the MEC and Massachusetts CMRs. Explain the purpose and history of the National Electrical Code (NEC) and the Massachusetts Electrical Code (MEC) amendments. Describe the layout of the Massachusetts Electrical Code (MEC). Explain how to navigate the MEC. Describe the purpose of the National Electrical Manufacturers' Association (NEMA) and the National Fire Protection Association (NFPA). Explain the role of Nationally Recognized Testing Laboratories.. State appropriate Massachusetts Electric Code Amendments (527 CMR 12). State appropriate Electrical Board of Examiners regulations (527 CMR 237). State appropriate Massachusetts Building Code regulations (780 CMR). Install raceways, boxes, and fittings. Describe various types of cable and raceways. Identify and select various types and sizes of raceways. 10 10 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 11 12 9 2.G.03 2.G.04 2.G.05 2.G.06 2.G.07 2.G.08 2.G.09 2.G.10 2.G.11 2.G.12 2.G.13 2.G.14 2.G.15 2.G.16 2.G.17 2.G.18 2.G.19 2.G.20 2.H 2.H.01 2.H.02 2.H.03 2.H.04 2.H.05 2.H.06 2.H.07 2.I 2.I.01 2.I.02 2.I.03 2.I.04 2.I.05 2.I.06 2.I.07 2.I.08 2.I.09 2.I.10 2.I.11 2.I.12 Identify and select various types and sizes of cables. Identify and select various types of raceway fittings. Identify various methods used to install raceways. Explain MEC raceway requirements. Describe the different types of nonmetallic and metallic boxes. State MEC requirements for box and raceway fill. Calculate the required box size for any number and size of conductors. Demonstrate the radius rule when installing conductors in pull boxes. Properly locate, install, and support boxes of all types. Describe the MEC regulations governing pull and junction boxes. State the MEC requirements for boxes supporting luminaries. Explain how boxes and fittings are selected and installed. Demonstrate procedures for installing raceways and boxes on various surfaces. Demonstrate procedures for installing raceways and boxes underground. Demonstrate procedures for installing raceways and boxes in flush installations. Describe the purpose of conduit bodies. Install the different types of fittings used in conjunction with boxes. Describe the installation rules for installing boxes and fittings in hazardous areas. Demonstrate procedures used in raceway bending. Identify various raceways. Identify the methods of hand bending raceway. Identify the parts of electric and hydraulic benders. Demonstrate process of different bending methods. Determine raceway bends using mathematical formulas. Make 90º bends, back-to-back bends, offsets, kicks, and saddle bends. Cut, ream, and thread conduit. Explain factors relating to conductors. Explain the various sizes and gauges of wire in accordance with American Wire Gauge (AWG) standards. Identify insulation types according to conditions and applications. Describe voltage ratings of conductors and cables. Read and identify markings on conductors and cables. Determine the ampacity of a conductor using the tables in the MEC. Select electrical conductors for specific applications. Demonstrate how to size conductors for a load. Explain the application of the MEC ampacity tables. Demonstrate derating conductors for fill, temperature, and voltage drop. State the purpose of stranded wire. Describe the different materials from which conductors are made. Describe the color coding of insulation. 11 10 X X X X X X X X X X X X X X X X X X 11 X X X X X X X X X X X X X X X X X X X X X X X 12 9 2.J 2.J.01 2.J.02 2.J.03 2.J.04 2.J.05 2.J.06 2.J.07 2.J.08 2.J.09 2.J.10 2.J.11 2.J.12 2.J.13 2.K 2.K.01 2.K.02 2.K.03 2.K.04 2.K.05 2.K.06 2.K.07 2.K.08 2.K.09 2.K.10 2.K.11 2.K.12 2.K.13 2.K.14 2.L 2.L.01 2.L.02 2.L.03 2.L.04 2.L.05 2.L.06 2.L.07 Install Conductors. Describe the procedure and equipment for pulling wire through conduit. Demonstrate the various methods of installing conductors in raceways. Install conductors in a raceway system. Plan and set up for a cable pull. Explain how mandrels, swabs, and brushes are used to prepare conduit for conductors. Install a pull-line for a cable-pulling operation. Explain the operation of power fish tape systems. Prepare the ends of conductors for pulling. Describe the types of cable pullers. Explain how to support conductors in vertical conduit runs. Demonstrate the installation of cable in cable trays. Explain the importance of communication during a cable-pulling operation. Explain the probable causes of stress or tension in cable pulls. Splice and terminate conductors. Describe how to make a good conductor termination. Prepare cable ends for terminations and splices. Select and install lugs and connectors onto conductors. Train cable at termination points. Explain the requirements of the MEC in making cable terminations and splices. Explain why mechanical stress should be avoided at cable termination points. Describe the importance of using proper bolt torque when bolting lugs onto busbars. Describe splicing techniques. Splice conductors using solderless connectors. Explain how to use hand and power crimping tools. Describe crimping techniques. Describe the installation rules for parallel conductors. Identify and apply manufacturers' specifications to all installations. Insulate a splice joint. Apply concepts relating to commercial and industrial wiring. Demonstrate and describe three-phase services. Describe various types of electric service for commercial and industrial installations. Explain the purpose of GFPE for services and where they must be installed. Calculate and select service-entrance equipment as per MEC rules. Explain NEMA classifications as they relate to switches and enclosures. Install wiring devices according to MEC regulations. Identify and follow MEC regulations governing installation of wiring devices. 12 10 11 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 12 9 2.L.08 2.L.09 2.L.10 2.L.11 2.L.12 2.M 2.M.01 2.M.02 2.M.03 2.M.04 2.M.05 2.M.06 2.M.07 2.M.08 2.M.09 2.M.10 2.M.11 2.M.12 2.M.13 2.N 2.N.01 2.N.02 2.N.03 2.N.04 2.N.05 2.N.06 2.N.07 2.N.08 2.N.09 2.N.10 2.N.11 2.O Identify and describe safety switches and disconnects. Install main disconnect switches, panelboards, and overcurrent protection devices. Identify the circuit loads, number of circuits required, and installation requirements for distribution panels. Identify and state the function of switchgear. Identify special locations and equipment. Apply concepts used in residential wiring. Describe how to determine electric service requirements for dwellings. Demonstrate and explain the grounding requirements of a residential electric service. Calculate and size service-entrance equipment. Demonstrate and state the functions and ratings of single-pole, double-pole, three-way, four-way, and dimmer switches. Explain how wiring devices are selected and installed. Select proper wiring methods for various types of residences. Explain the role of the MEC in residential wiring. Compute branch circuit loads and explain branch circuit requirements. Explain the purpose of ground-fault circuit interrupters (GFCI) and arc-fault circuit interrupters (AFCI) and tell where they must be installed. Describe rules for installing electric space heating and HVAC equipment. Demonstrate the installation rules for electrical systems around swimming pools, spas, and hot tubs. Describe the installation and layout of lighting outlets. Demonstrate the ability to make all installations according to manufacturers' specifications. Demonstrate methods of overcurrent protection. Explain the importance and necessity of overcurrent protection in electrical circuits. State the key MEC requirements regarding overcurrent protection. Determine let-through current values (peak and RMS) when current-limiting overcurrent devices are used. Demonstrate sizing of overcurrent protection for specific applications. Define the terms associated with fuses and circuit breakers. Describe the operation of a circuit breaker and fuse. Select the most suitable overcurrent device for the application. Explain the role of the MEC in specifying overcurrent devices. Describe the operation of single-element and time-delay fuses. Demonstrate alignment short circuit currents. State and apply MEC tap rules. Illustrate theories of and applications relating to motors. 13 10 11 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 12 9 2.O.01 2.O.02 2.O.03 2.O.04 2.O.05 2.O.06 2.O.07 2.O.08 2.O.09 2.O.10 2.O.11 2.O.12 2.O.13 2.O.14 2.O.15 2.O.16 2.O.17 2.O.18 2.O.19 2.O.20 2.O.21 2.O.22 2.O.23 2.O.24 2.O.25 2.P 2.P.01 2.P.02 2.P.03 2.P.04 2.P.05 2.P.06 2.P.07 2.P.08 Define terms relating to motors. Describe the various types of motor enclosures. Describe how the rated voltage of a motor differs from the system voltage. Describe the basic construction and components of a three-phase squirrel cage induction motor. Describe the basic construction and components of single-phase motors and operating characteristics. Explain the relationships among speed, frequency, and the number of poles in a three-phase induction motor. Describe how torque is developed in an induction motor. Define percent slip and speed regulation. Demonstrate how the direction of a three-phase motor is reversed. Describe the component parts and operating characteristics of a three-phase wound rotor induction motor. Describe the component parts and operating characteristics of a three-phase synchronous motor. Define torque, starting current, and armature reaction as they apply to DC motors. Explain how the direction of rotation of a DC motor is changed. Describe the design and characteristics of a DC shunt, series, and compound motor. Describe dual-voltage motors and their applications. Describe the methods for determining various motor connections. Describe general motor protection requirements as delineated in the MEC. Size branch circuits and feeders for electric motors. Size, select, and install overcurrent protective devices for motors. Size, select, and install overload relays for electric motors. Size motor short-circuit protectors. Size multi-motor branch circuits. Size motor disconnects. Demonstrate protecting motor circuits with transformers. Reverse a single-phase motor. Identify and use motor controls. Demonstrate the operating principles of motor controls and control circuits. Select motor controls for specific applications. Connect a simple control circuit. Connect motor controllers for specific applications. Connect control transformers in conjunction with motor control circuits. Explain MEC regulations governing the installation of motor controls. Install motor control circuits following MEC requirements. Install contactors and relays according to the MEC requirements. 14 10 11 12 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 9 2.P.09 2.P.10 2.P.11 2.P.12 2.P.13 2.P.14 2.P.15 2.P.16 2.P.17 2.P.18 2.P.19 2.Q 2.Q.01 2.Q.02 2.Q.03 2.Q.04 2.Q.05 2.Q.06 2.Q.07 2.R 2.R.01 2.R.02 2.R.03 2.R.04 2.R.05 2.R.06 2.R.07 2.R.08 2.R.09 2.R.10 2.R.11 2.R.12 2.R.13 Interpret motor control diagrams and schematics. Size and select thermal overload relays and other protective devices for motor controls. Describe how overload relays operate. Describe the operating principles of contactors and relays. Select contactors and relays for use in specific control system. Demonstrate purpose of electrical and mechanical interlocks. Explain how mechanical and solid-state controllers operate. Describe manual, semi-automatic and automatic control circuits. Test control circuits. Identify and state the functions of limit switches and relays. Explain applications of PLC, VFD, USD and other computerized controls. Demonstrate procedures used to maintain motors. Demonstrate procedures used to test motors and generators. Demonstrate procedures used to clean and test open-frame motors. Demonstrate procedures used to lubricate motors that require this type of maintenance. Collect and record motor data. Select tools for motor maintenance. Test motors. Troubleshoot electric motors. Illustrate principles of grounding. Explain the purpose of grounding according to the MEC. Distinguish between a short circuit and a ground fault. Define the MEC ground-related terms. Distinguish between system grounding and equipment grounding. Size the grounding electrode conductor for various AC systems using the MEC. Explain the MEC requirements for the installation and physical protection of grounding electrode conductors. Explain the function of the grounding electrode system and determine which grounding electrodes shall be used. Size the equipment grounding conductor for raceways and equipment using the MEC. Explain the function of the main bonding jumper in the grounding system and size the main bonding jumper for various applications. Explain the MEC requirements for bonding of enclosures and equipment. Explain the MEC requirements for grounding of enclosures and equipment. Demonstrate effectively grounded and its importance in clearing ground faults and short circuits. Explain the MEC requirements for grounding separately-derived systems, including transformers and generators. 15 10 11 12 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 9 2.R.14 2.S 2.S.01 2.S.02 2.S.03 2.S.04 2.S.05 2.S.06 2.S.07 2.S.08 2.S.09 2.S.10 2.S.11 2.S.12 2.T 2.T.01 2.T.02 2.T.03 2.T.04 2.T.05 2.T.06 2.T.07 2.T.08 2.T.09 2.T.10 2.T.11 2.T.12 2.T.13 2.T.14 2.U 2.U.01 2.U.02 2.U.03 Explain the MEC requirements for grounding at more than one building. Install and maintain lighting and luminaries. Identify and define industry terminology for lighting. Recognize ballasts and describe their purpose for use in fluorescent and HID lighting fixture (luminaires). Recognize basic occupancy sensors, photoelectric sensors, and dimmers used to control lighting circuits and describe how each device operates. Select and install contactors and relays for lighting control. Troubleshoot fluorescent and HID lamps and lighting fixtures (luminaires) using checklists. Describe the characteristics of light and how the human eye reacts to light. Recognize the different kinds of lamps and explain the advantages and disadvantages of each type. Properly select and install lamps into lighting fixtures (luminaires). Recognize and install various types of lighting fixtures (luminaires). Classify lighting fixtures by layout, location, fixture type, and type of service. Identify the main lighting requirements associated with lighting systems used in selected applications such as office buildings, schools, theaters, etc. Select the appropriate lighting fixtures for specific lighting applications using manufacturers' lighting fixture catalogs. Illustrate concepts relating to distribution system transformers. Describe transformer operation. Explain the principle of self and mutual induction. Describe the operating characteristics of the various types of transformers. Connect a multi-tap transformer for the required secondary voltage. Explain MEC regulations governing the installation of transformers. Compute transformer sizes for various applications. Explain types and purposes of grounding transformers. Identify power transformer connections. Identify specialty transformers. Calculate and install overcurrent protection for transformers. Ground specialty transformers according to MEC requirements. Size and select buck-and-boost transformers. Identify current and potential transformers. Demonstrate and describe reasons for both wye- and delta-connected units. Describe and install low voltage and alarm systems. Identify basic electronic system components and schematic diagrams and ladder logic. Describe the basic materials of solid-state devices. Describe and identify the basic types of solid state devices and their use in circuits. 16 10 11 12 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 9 2.U.04 2.U.05 2.U.06 2.U.07 2.U.08 2.U.09 2.U.10 2.U.11 2.U.12 Explain the operating principles of fire and security alarm systems. Identify the components of fire and security alarm systems. Install and connect components of fire and security alarm systems. Explain startup procedures for fire and security systems. Explain the various codes and regulations related to alarm systems (i.e. NFPA 72). Identify and install Class 1, 2, and 3 low voltage systems. Explain the MEC rules in Article 725 as they relate to various low voltage circuits. Explain the cable hierarchy for cable as they relate to fire, communications and other cable systems in a building. Prepare, install, terminate, and test teledata wiring. 17 10 11 12 X X X X X X X X X Course Scope and Sequence 19 Program Name: Electrical Grade Level: 11 Instructor: Topic/Unit: Conductors - Advanced Concepts Topics MA Frameworks Competencies/Tasks/Skills Conductors – Advanced Concepts Review 2.I.01 Review fundamental conductor concepts. 2.I.02 Ampacity 2.I.05 Wire gauges 2.I.11 Conductor materials Conductor insulation Summarize fundamental conductor concepts. Conductor Installation Identify and describe the types of equipment used to pull conductors through conduit. 2.J.01 2.J.02 Fish tape 2.J.03 Pull lines 2.J.04 String lines 2.J.05 Power systems 2.J.06 Discuss safety precautions related to conductor installation. 2.J.07 Explain the importance of communication during a cable-pulling operation. 2.J.09 2.J.08 Explain how to plan, prepare and set up for a cable pull. 2.J.10 Describe common configurations for cable reels, caddies and stands. 2.J.12 2.J.11 Describe the procedure and equipment for pulling wire through conduit. Describe safety procedures that should be followed when installing conductors. Describe the importance of understanding load ratings, force and tension when installing conductors. Plan and prepare a conductor installation for a given scenario. Explain the importance of proper conductor end preparation prior to pulling. Explain how mandrels, swabs, and brushes are used to prepare conduit for conductors. Describe the differences between conductive and nonconductive fish tape. Demonstrate how to prepare the ends of conductors for pulling. Perform wire pulling using a variety of methods. Demonstrate the use of wire grips on pulling equipment. Install conductors in a raceway system. 2.J.13 Topics MA Frameworks Competencies/Tasks/Skills Describe the use of special lubricants for conductor pulling. Compare power pulling systems to other commonly used pulling systems. Demonstrate proper procedures for pulling wire through conduit. Install cables in cable trays. Demonstrate the various methods of installing conductors in raceways. Describe basic troubleshooting methods for conductor installation. Identify and describe the types of cable pullers. Demonstrate how to install a pull-line for a cablepulling operation. Explain the operation of power fish tape systems. Describe installation situations that require specialized conductor support. Explain and demonstrate how to support conductors in vertical conduit runs. Demonstrate the installation of cable in cable trays. Review troubleshooting methods for conductor installation. Explain the probable causes of stress or tension in cable pulls. Splicing and Terminating Conductors Discuss the importance of identifying and applying manufacturers' specifications to all installations. Describe the importance of ensuring safe and correct electrical conductor connections. Describe and demonstrate how to make a good conductor termination. 2.K.01 2.K.02 2.K.03 2.K.04 2.K.05 Identify tools used in preparing conductor terminations. 2.K.06 Describe the different cuts used for cable stripping. 2.K.08 Demonstrate proper methods for stripping and preparing conductors. 2.K.09 Define and describe different types of wire connectors. 2.K.11 Identify the different materials used to make connectors. 2.K.07 2.K.10 2.K.12 2.K.13 22 Strip a variety of wires in preparation for splicing or terminating. Prepare cable ends for terminations and splices. Install a variety of connectors on conductors. Complete multiple wire connections. Perform cable training. Describe regulations in the NEC and MEC regarding splicing and terminating conductors. Perform conductor splicing with a variety of tools and materials. Topics MA Frameworks Competencies/Tasks/Skills Identify tools used to install connectors. 2.K.14 Demonstrate how to select and install lugs and connectors. Describe possible effects of mechanical stress on cable termination points. Use a variety of tools to splice conductors. Define cable training and describe the purpose. Demonstrate how to train cable at termination points. Analyze special considerations for making splices and connections. Review and explain the requirements of the NEC and MEC in making cable terminations and splices. Properly tape a variety of electrical joints. Explain why mechanical stress should be avoided at cable termination points. Use hand and power tools to crimp conductors. Demonstrate how to properly tape electrical joints. Describe the importance of using proper bolt torque when bolting lugs onto busbars. Identify splicing tools and materials. Describe and demonstrate splicing techniques. Demonstrate how to splice conductors using solderless connectors. Demonstrate how to insulate a splice joint. Describe and demonstrate crimping techniques. Demonstrate how to use hand and power crimping tools. Describe the installation rules for parallel conductors. 23 Program Name: Electrical Grade Level: 11 Instructor: Topic/Unit: Introduction to Electrical Blueprints Topics MA Frameworks Competencies/Tasks/Skills Introduction to Electrical Blueprints Basic Print Components Explain the basic layout of a set of prints as well as the importance of the accompanying job specifications document. 2.A.01c 2.A.02c Describe the different components present in construction drawings. Identify and explain the symbols used in drawings. Recognize and identify basic print terms, abbreviations, line types, symbols and notes. Identify different types of drawings and explain how they are used to provide different information. Identify and describe the different components of a set of prints. (Site [plot], foundation, floor, elevation, detail, electrical, HVAC, plumbing). Describe different types of drawings and their purpose: pictorial, schematic, orthographic. Print Reading Explain concepts fundamental to reading construction prints and electrical drawings. Demonstrate how to interpret and follow scales. Demonstrate how to interpret and follow drawing dimensions. Explain how to determine true measurements from a print using an architect’s scale. Explain how to determine true measurements from a print using an engineer’s scale. Demonstrate how to read and interpret plan, elevation, section and detail views and schedules. Explain how to identify, develop and complete material quantity takeoff sheets. Discuss how state and/or local code requirements apply to prints. Identify and describe electrical-specific drafting lines and symbols. 2.A.03c 2.A.04c 2.A.05c 2.A.06c 2.A.07c 2.A.08 2.A.09 2.A.10 Interpret plan and elevation views on drawings. Calculate measurements and complete drawings using an architect’s scale. Calculate measurements and complete drawings using an engineer’s scale. Calculate, measure and draw lines to scale. Scale dimensions that are not explicitly included in drawings. Complete a material takeoff sheet from a set of prints. Describe how local electrical code affects prints. Interpret and draw electricalspecific drafting lines and symbols. Topics MA Frameworks Competencies/Tasks/Skills Demonstrate how to layout and convert schematic diagrams to wiring diagrams. Analyze, interpret and convert schematic drawing and diagrams. Demonstrate how to layout and convert wiring diagrams to schematic diagrams. Use computer software to create schematics and drawings. Discuss the advantages of using computer software to assist in drawings and schematics. Demonstrate how to utilize software for Control Circuit drawing. 25 Program Name: Electrical Grade Level: 11 Instructor: Topic/Unit: Commercial and Industrial Wiring Topics MA Frameworks Competencies/Tasks/Skills Commercial and Industrial Wiring Introduction Review common wiring devices and methods used in commercial and industrial applications. Demonstrate and describe three-phase services. Explain the purpose of ground-fault protection of equipment (GFPE) for services and where they must be installed. 2.L.01 2.L.02 2.L.03 2.L.04 Describe various types of electric service for commercial and industrial installations. Describe the purpose of GFPE systems and compare it to GFCI systems. Describe common commercial and industrial service entrance requirements. Review metering and service entrance requirements. Demonstrate how to calculate and select serviceentrance equipment as per MEC rules. Switches Describe the purpose of switches. 2.L.06 Define basic switch terminology. 2.L.07 Identify and describe the basic types of switches: 2.L.08 Single-pole Double-pole Three-way Four-way Identify and describe special types of switches. Identify and describe types of disconnect devices. Identify and describe types of safety switches. Demonstrate how to install main disconnect switches, panelboards, and overcurrent protection devices. Identify MEC switch installation regulations. Discuss the importance of following national and state regulations when installing switches. 2.L.09 Describe the differences in capacity and purposes of different switches. Describe the appropriate applications for different types of basic switches. Describe the functions of disconnect and safety switches. Install switches according to MEC regulations. Topics MA Frameworks Competencies/Tasks/Skills National Electrical Manufacturer’s Association (NEMA) Classifications Review the background and function of NEMA. Explain NEMA classifications as they relate to switches and enclosures. Define and describe the two basic NEMA classifications of switches: Compare and contrast different enclosures and their applications. General duty Heavy duty 2.L.05 Identify and describe different types of enclosure classifications (Types 1-13). Receptacles Describe the purpose of receptacles. 2.L.06 Define basic receptacle terminology. 2.L.07 Identify and describe the basic types of receptacles: Straight blade Twist lock Pin and sleeve Describe the differences in capacity and purposes of different receptacles. Describe the appropriate applications for different types of receptacles. Install receptacles according to MEC regulations. Describe the components of receptacle terminals. Describe the purpose of ground fault current interrupters (GFCI). Identify MEC regulations governing installation of receptacles. Discuss the importance of following national and state regulations when installing receptacles. Control Devices Identify and describe common control devices used in commercial and industrial applications: Relays Limit switches 2.L.06 2.L.07 Describe the appropriate applications for different types of control devices. Install control devices according to MEC regulations. Identify MEC control device installation regulations. Discuss the importance of following national and state regulations when installing control devices. 27 Topics MA Frameworks Competencies/Tasks/Skills Power Distribution Equipment Identify the circuit loads, number of circuits required, and installation requirements for distribution panels. Identify and state the function of switchgear. 2.L.10 2.L.11 2.L.12 Identify and describe special configurations, locations and distribution equipment. Describe various types of power distribution equipment for commercial and industrial installations. Install power distribution equipment according to MEC regulations. 28 Program Name: Electrical Grade Level: 11 Instructor: Topic/Unit: Residential Wiring Topics MA Frameworks Competencies/Tasks/Skills Residential Wiring Determining Electric Service Requirements Review blueprint concepts as they pertain to planning residential electrical systems. 2.M.01 2.M.03 Demonstrate how to determine electric service requirements for dwellings: General lighting loads Appliance loads Laundry circuits Calculate electrical loads based on information in residential blueprints. Calculate electric service loads for residential applications. Identify residential demand factors. Discuss the application of demand factors. Load Center Requirements Explain how to determine the size and enclosure specifications of a residential load center. Analyze and determine load center requirements. Describe the purpose of GFCI circuit breakers (singlepole, two-pole, direct-wired). Grounding Electric Services Discuss the purpose of grounding systems. Demonstrate and explain the grounding requirements of a residential electric service. Identify and describe different methods for grounding. 2.M.02 Describe functions of residential grounding systems. Compare a variety of methods used for residential grounding. Topics MA Frameworks Competencies/Tasks/Skills Installing the Service Entrance Review fundamental electric service requirement concepts. 2.M.03 Analyze and select the location of the service drop, electric meter, load center and panelboard based on a given blueprint or scenario. Describe different residential wiring methods. 2.M.06 Describe the difference between open and concealed wiring systems. 2.M.08 Describe the difference between open and concealed wiring systems. Demonstrate how to calculate and size serviceentrance equipment. Explain how to select the location of the service drop, electric meter, load center and panelboard. Residential Wiring Methods 2.M.09 Describe the use of cable systems and raceways Explain how to select proper wiring methods for various types of residences. Select appropriate residential wiring methods depending on the required applications. Analyze and calculate branch circuit loads based on a given blueprint or scenario. Review residential equipment grounding requirements. Explain the purpose of ground-fault circuit interrupters (GFCI) and arc-fault circuit interrupters (AFCI) and tell where they must be installed. Describe branch circuit layouts. Demonstrate how to compute branch circuit loads and explain branch circuit requirements. Residential Outlets, Receptacles and Switches Explain the identification, location and installation of outlets, receptacles and switches. Demonstrate and state the functions and ratings of single-pole, double-pole, three-way, four-way, and dimmer switches. Explain how wiring devices are selected and installed. 2.M.04 2.M.05 2.M.07 2.M.12 2.M.13 Explain the role of the MEC in residential wiring. Describe the installation and layout of outlets. Describe the installation and layout of receptacles. Describe the installation and layout of switches. Describe how the MEC affects residential wiring applications. Discuss the importance of insuring that all installations are according to manufacturers' specifications. Follow manufacturer’s specifications for all installations. 30 Topics MA Frameworks Competencies/Tasks/Skills Residential Electric Heating and HVAC Review basic electrical heating and HVAC concepts. 2.M.10 Describe different electric heating systems. Identify procedures to follow for electric heating and HVAC installations. Describe rules for installing electric space heating and HVAC equipment. Pools, Spas and Hot Tubs Compare different electric heating systems. 2.M.11 Describe and demonstrate procedures for the installation of electrical systems around swimming pools, spas, and hot tubs. Describe the rules and procedures that must be followed for electrical installations for pools, spas and hot tubs. 31 Program Name: Electrical Grade Level: 11 Instructor: Topic/Unit: Circuit Breakers and Fuses Topics MA Frameworks Competencies/Tasks/Skills Circuit Breakers and Fuses Introduction Explain the importance and necessity of overcurrent protection in electrical circuits. Describe safety precautions specific to overcurrent protection applications. 2.N.01 2.N.02 2.N.03 2.N.04 Distinguish between overload and short-circuit current. 2.N.05 Review the key MEC requirements regarding overcurrent protection devices. 2.N.08 2.N.07 Explain how to determine let-through current values (peak and RMS) when current-limiting overcurrent devices are used. Describe the fundamental purpose of overcurrent protection in electrical circuits. Identify safety guidelines for overcurrent protection applications Describe factors that may contribute to an overcurrent situation. Describe effects of overcurrent on electrical circuits. Compare and contrast different types of overcurrent protection devices. Explain how to calculate and size overcurrent protection for specific applications. Locate overcurrent protectionrelated content in the NEC and MEC. Describe the basic types of protective overcurent devices. Describe MEC requirements that pertain to overcurrent protection. Define terms associated with fuses and circuit breakers. Compare the basic characteristics of fuses and circuit breakers. Distinguish between current rating and interrupting capacity of a breaker or fuse. Demonstrate how to select an overcurrent protection device or combination of devices to protect circuit components for a specific application. Circuit Breakers Identify and describe different types of circuit breakers. Describe the operation of a circuit breaker. 2.N.06 2.N.07 2.N.08 Describe the basic function of a circuit breaker. Describe circuit breaker rating Topics MA Frameworks Competencies/Tasks/Skills Explain how circuit breakers are classified by voltage, current, and interrupting-capacity ratings. systems. Identify and select the proper circuit breakers for specific applications. Explain how circuit breakers are marked. Review the function and use of different types of GFCIs. Use reference and technical manuals to assist in classifying circuit breakers. Demonstrate how to select, install, connect and test circuit breakers. Properly install and test breakers. Explain the role of the MEC in specifying the use of circuit breakers. Fuses Identify and describe different types of fuses. 2.N.06 Describe the operation of a fuse. 2.N.07 Explain how fuses are classified and marked. 2.N.08 Describe the operation of single-element and timedelay fuses. 2.N.09 Describe the basic function of a fuse. Describe fuse rating systems. Identify and select the proper fuses for specific applications. Remove, test and reinstall fuses. Demonstrate how to determine the characteristics of fuses that need to be replaced. Demonstrate how to select, install, connect and test fuses. Explain the role of the MEC in specifying the use of fuses. Advanced Overcurrent Concepts Explain and demonstrate short circuit current calculations. 2.N.10 2.N.11 Identify and discuss MEC tap rules as they apply to overcurrent protection. Complete and analyze short circuit calculations. State and apply MEC tap rules as they apply to overcurrent protection. 33 Occupational Analysis 35