Commercial/Industrial Electricity

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1 1 ELC 210 Commercial/Industrial Electricity Course Package Presented and Approved July 31, 2008

2 2 Contact person(s) DAVE WHITE Date of proposal to JULY 31, 2008 Curriculum Committee NEW COURSE PACKAGE FORM COURSE INFORMATION Prefix & ELC 210 Title Commercial/Industrial Electricity I Number Catalog Course Description Covers the theory and application of electrical concepts for industrial maintenance and installation. Will emphasize single-phase and three-phase installation, measuring instruments, conduction in liquids and gases, and the use of trigonometry and vectors in electrical calculations. Advanced topics such as magnetic induction, resistive-inductive series and parallel circuits, filters, three-phase transformers, three-phase alternators will also be explored Credit hours 3.0 Lecture hours 2.0 Lab hours 2.0 Prerequisite(s) Completion of ELC , or demonstration of previous electrical experience and permission of Division Chair. Co-requisite(s) Does this course need a separately scheduled lab component? Yes No Proposed semester for new course to start _X_ Fall 2008 Spring 20 Summer 20 Does this course need additional fees attached? If so, please explain. Is there a similar course in the college bank? Articulation: Is this course or an equivalent offered at other two- and four- year universities in AZ? Yes _X_ No If yes, identify: Yes _X_ No If yes, identify the college, subject, prefix, number, and title: Writing Across the Curriculum Rationale:

3 3 Mohave Community College firmly supports the idea that writing can be used to improve education; students who write in their respective content areas will learn more and retain what they learn better than those who don t. Courses in the core curriculum have been identified as Writing Across the Curriculum courses. Suggested minimum standards for the Writing Across the Curriculum component are as follows: 1. The writing assignments should total words. For example, a single report which is 1500 words in length could fulfill the requirement, or a series of essay questions and short papers (example: four -375 word assignments) which total 1500 words could meet the requirement. 2. The writing component will represent at least 10% of a student s final grade in the course. Is this a course identified as a Writing Across the Curriculum course? Yes _X_ No Intended Course Outcomes By the end of the semester, students will be able to: 1. Apply the basic electrical concepts studied in ELC to commercial wiring and installations 2. Demonstrate and understanding of the processes required when planning a commercial installation 3. Demonstrate the procedures used to calculate branch circuit load requirements, the resulting feeder loads and main electrical service load, 4. Locate and describe the pertinent NEC codebook requirements for commercial wiring applications 5. Demonstrate the appropriate use of personal protective equipment and safety procedures when working with commercial electrical installations. Course Competencies and Objectives Competency 1 Demonstrate the procedures to initiate an electrical project, utilizing the contract documents and electrical drawings. Objective 1.1 Describe the safety procedures for working on commercial electrical systems. Objective 1.2 Identify the specific project requirements that are specified in an electrical contract document. Objective 1.3 Demonstrate how to locate specific information on the building plans. Objective 1.4 Describe the purpose of the Schedule of Working Drawings. Objective 1.5 Demonstrate converting International System of Units (SI) measurements to English measurements. Objective 1.6 Define the terms; approved, authority having jurisdiction, identified, labeled, listed, rules, and FPN (Fine Print Notes) as listed in the National Electrical Code (NEC)

4 4 Objective 1.7 Identify and interpret electrical symbols used in construction drawings and apply them to the electrical work. Competency 2 Demonstrate the calculation of electrical loads for various commercial circuits. Objective 2.1 Determine the minimum lighting loading for a given area. Objective 2.2 Determine the minimum receptacle loading for a given area. Objective 2.3 Determine the minimum equipment loading Objective 2.4 Define calculated load and connected load. Competency 3 Analyze the factors that must be considered when connecting branch circuits and describe the NEC requirements as found in NEC article 310. Objective 3.1 Determine the required number of branch circuits for a set of loads. Objective 3.2 Calculate the correct rating for branch-circuit protective devices. Objective 3.3 Determine the preferred type of wire for a branch circuit. Objective 3.4 Demonstrate the procedures for calculating conductor sizes for a branch circuit. Competency 4 Describe the essential characteristics of switches and receptacles that must be considered for specific commercial applications. Objective 4.1 Demonstrate correct selection of switches and receptacles with the proper rating for a particular application. Objective 4.2 Demonstrate proper installation techniques of Hospital-Grade, Electronic Equipment, and Isolated Ground receptacles. Objective 4.3 Describe the two categories, and the four types of snap switches. Objective 4.4 List and describe the typical color coding for wiring cable. Competency 5 Describe the general wiring methods that are acceptable for use in commercial/industrial applications and analyze their advantages and disadvantages. Objective 5.1 Identify and describe the installation requirements for a raceway. Objective 5.2 Demonstrate the proper sizing of raceways for given a number and size of conductors to be installed. Objective 5.3 Demonstrate the proper sizing of boxes for a given amount of fill and the number of entering raceways. Objective 5.4 List and describe the three basic wiring methods used for flexible connections. Objective 5.5 Describe and analyze specific situations where PVC conduit is and is not permitted. Competency 6 Demonstrate the appropriate techniques required for connecting commercial appliances. Objective 6.1 Define appliance and utilization equipment as described in the NEC. Objective 6.2 Select the appropriate for installing electrical circuits to specific appliances including appropriate grounding. Objective 6.3 Demonstrate the procedures for calculating branch-circuit ratings, conductor sizes, and overcurrent protection for appliances and motors.

5 5 Objective 6.4 Compare and contrast Type 1 and Type 2 overcurrent protection Competency 7 Describe the purpose of feeder circuits and discuss the factors that must be considered for installation. Objective 7.1 Demonstrate the procedures for calculating feeder loads. Objective 7.2 Correctly calculate minimum feeder overcurrent device ratings and minimum feeder conductor sizes. Objective 7.3 Demonstrate the calculation of voltage drops. Objective 7.4 Describe the process for reducing neutral conductor size. Objective 7.5 Demonstrate the selection of feeder raceway sizes. Competency 8 Demonstrate procedures used for retrofitting circuits and adding additional specialized circuits to existing commercial facilities. Objective 8.1 Demonstrate the selection of materials and the installation techniques for surface metal raceways, and describe situations where surface metal raceways are appropriate. Objective 8.2 Demonstrate the selection and installation of multi-outlet assemblies, including calculating the required loading allowance. Objective 8.3 Describe the factors to be considered when installing a branch circuit for a computer system. Objective 8.4 List and demonstrate the two methods for installing floor outlets. Competency 9 Demonstrate the appropriate techniques required for installing specialized circuits, and electrical service for upper level floors. Objective 9.1 Tabulate materials required to install an electrical rough-in. Objective 9.2 List and select the components to install an electric water heater. Objective 9.3 Compare and contrast single- and 3-phase supply systems Objective 9.4 Describe typical connection schemes for open offices, and computer room circuits. Objective 9.5 Describe typical connection schemes and procedures for water heater circuits, and washer and dryer circuits. Objective 9.6 Describe and analyze the electrical requirements that make 3-phase systems preferable to single-phase. Competency 10 Compare and contrast owner circuits and occupant circuits in a commercial building. Objective 10.1 List and describe the categories of electrical circuits for which the owner is responsible. Objective 10.2 Describe the typical controls systems used for owners lighting circuits. Objective 10.3 Analyze the implication of continuous operation when designing and implementing commercial lighting circuits Objective 10.4 List and describe the main components of an electric boiler control and sump pump. Competency 11 Describe the purpose of an electrical panelboard in a commercial installation and discuss the NEC requirements for panelboard construction, ratings and installation. Objective 11.1 Describe the criteria used for selecting a panelboard for commercial application. Objective 11.2 Demonstrate the correct numbering of circuits in a panelboard.

6 6 Objective 11.3 List two important requirements that must be followed regarding overcurrent protection for panelboards. Objective 11.4 Demonstrate the correct placement of panelboards based upon the NEC guidelines for working space depth, width, height and access necessary to safely move around and work on the equipment. Objective 11.5 Compute the correct feeder size for a panelboard. Objective 11.6 Prepare a panelboard directory. Competency 12 Identify and discuss the factors to be considered with the installation of electrical service for a commercial building. Objective 12.1 Analyze the role of the electrician, the local power company, the electrical inspector and the relevant NEC requirements for the installation of commercial electrical service. Objective 12.2 Compare and contrast liquid-filled and dry-type transformers. Objective 12.3 Demonstrate the installation of transformers following the requirements of the NEC Objective 12.4 List the factors to be considered when determining the service entrance and service point for commercial electrical service. Objective 12.5 List and describe the two basic methods of metering. Objective 12.6 Describe the factors to be considered, and the service entrance equipment required with a transformer installation that is remote from a building. Objective 12.7 Compare and contrast the grounding and bonding of electrical systems. Objective 12.8 Demonstrate proper safety practices when working on or near electrical equipment. Competency 13 List and describe the most commonly used commercial lamp types. Objective 13.1 List and define the commonly used terms associated with lamp selection. Objective 13.2 Compare and contrast incandescent, low-voltage incandescent, fluorescent, and high-intensity discharge lamps. Objective 13.3 Calculate the desired lighting needed and the energy requirements for the specific type of installation. Objective 13.4 List and describe some of the more common energy-saving products associated with lighting. Objective 13.5 Discuss the proper disposal/recycling of lamps that contain mercury following the Federal government s Environmental Protection Agency (EPA) rules and regulations. Competency 14 List and describe the most commonly used commercial luminaires and the conditions in which each is used. Objective 14.1 Define the term luminaire and list the components. Objective 14.2 Properly select and install luminaires. Objective 14.3 Describe the support methods for suspending or installing luminaires in commonly used ceiling systems. Objective 14.4 Demonstrate the proper selection of a ballast type for the given application Objective 14.5 Describe the safety precautions required for working with luminaires. Objective 14.6 Compute the lighting watts per square foot (square meter) for a

7 7 space. Competency 15 Describe the conditions, the local and state codes, and the NEC guidelines that govern the use and selection of emergency and stand-by power systems. Objective 15.1 List and describe the three types of systems that are addressed by the NEC to ensure that power is available in critical conditions. Objective 15.2 Demonstrate proper selection and sizing of an emergency power system. Objective 15.3 Describe the installation techniques of an emergency power system. Competency 16 List and describe the commonly used types, classes, and ratings of fuses and circuit breakers for commercial electrical systems. Objective 16.1 Compare and contrast fuses and circuit breakers. Objective 16.2 Define the terms interrupting rating, short-circuit currents RMS, and current limitation. Objective 16.3 Apply the NEC to the selection and installation of overcurrent protective devices. Objective 16.4 Analyze the use of time-current characteristic curves and peak letthrough charts for commercial electrical installations. Objective 16.5 Describe the use of series-rated systems for electric motor circuits. Competency 17 Describe the factors to be considered when selecting circuit breakers and fuses for overcurrent protection. Objective 17.1 Perform short-circuit calculations using the point-to-point method and using appropriate tables and charts. Objective 17.2 Define the terms coordination, selective systems, and nonselective systems. Objective 17.3 Compare and contrast selective and non-selective coordination of overcurrent protection devices. Competency 18 Describe the importance of component short-circuit current rating when determining an electrical systems overcurrent and short-circuit protection. Objective 18.1 Describe the NEC requirements for equipment and conductor withstand rating, and available fault currents and circuit impedance. Objective 18.2 Discuss the time-current characteristics of fuses and circuit breakers, and analyze their impact when minimize potential equipment damage. Objective 18.3 Calculate an insulated conductor s short-time withstand rating Objective 18.4 Calculate a bare copper conductor and/or its bolted short-circuit withstand rating. Objective 18.5 Calculate the melting point of a copper conductor. Objective 18.6 Define tap conductor and describe its use. Teacher s Guide Course Materials and Equipment

8 8 Textbook(s) Title Electrical Wiring Commercial 13 th Edition Author(s) Ray C. Mullin, Robert L. Smith Publisher Delmar ISBN Software Equipment Other Title Author(s) Publisher ISBN Writing Across the Curriculum *(See addendum for grading rubrics) This course emphasizes and supports writing across the curriculum... Learning Units Learning Unit Topic 1: Commercial Building Plans, Specifications and Reading Electrical Working Drawings Competency: 1 Objectives: 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 2: Calculating the Electrical Load and Branch Circuits Competency: 2, 3 Objectives: 2.1, 2.2, 2.3, 2.4, , 3.3, 3.4, review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 3: Switches. Receptacles and Wiring Methods Competency: 4, 5

9 9 Objectives: 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.3, 5.4, 5.5 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 4: Motor, Appliance Circuits and Special Systems Competency: 6, 8 Objectives: 6.1, 6.2, 6.3, 6.4, 8.1, 8.2, 8.3, 8.4 review questions on pages and 175 in the Electrical Wiring Commercial text book. Learning Unit Topic 5: Feeders and Working Drawings Upper Level Competency: 7, 9 Objectives: 7.1, 7.2, 7.3, 7.4, 7.5, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 6: Special Circuits and Panelboard Selection and Installation Competency: 10, 11 Objectives: 10.1, 10.2, 10.3, 10.4, 11.1, 11.2, 11.3, 11.4, 11.5, 11.6 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 7: The Electric Service Competency: 12 Objectives: 12.1, 12.2, 12.3, 12.4, 12.5, 12.6, 12.7, 12.8 review questions on pages in the Electrical Wiring Commercial text book. Learning Unit Topic 8: Lamps and Luminaires

10 10 Competency: 13, 14 Objectives: 13.1, 13.2, 13.3, 13.4, 13.5, 14.1, 14.2, 14.3, 14.4, 14.5, 14.6 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 9: Emergency, Legally Required Standby, and Optional Standby Power Systems and Overcurrent Protection Competency: 15, 16 Objectives: 15.1, 15.2, 15.3, 16.1, 16.2, 16.3, 16.4, 16.5 review questions on pages and in the Electrical Wiring Commercial text book. Learning Unit Topic 10: Short Circuit Calculations and Coordination of Overcurrent Protective Devices / Equipment and Conductor Short-Circuit Protection Competency: 17, 18 Objectives: 17.1, 17.2, 17.3, 18.1, 18.2, 18.3, 18.4, 18.5, 18.6 review questions on pages and in the Electrical Wiring Commercial text book. Course Assessment Information Description of Possible Course Assessments (Essays, multiple choice, etc.) Exams standardized for this course? Midterm Final Other (please specify): Where can faculty members locate or access the required standardized exams for this course? (Contact person and location) Example: NCK Gen Ed Division Chair Office Standard objective tests and competency demonstrations where appropriate Are exams required by the department? Yes x No If Yes, please specify: NCK BHC LHC NMC DE Office of Instruction

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