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Qualification - Pearson BTEC Level 4 HND in Construction and The Built Environment
Unit Name - Principles of Electrical Design & Installation
Unit Level - Level 4
Unit Number - Unit 19
Unit code - L/615/1405
Unit Credit - 15
Assignment Title - Principles of Electrical Design & Installation
Learning Outcome 1: Discuss the fundamentals of electricity, magnetism, transformers and circuits.
Answer: This outcome requires a comprehensive understanding of the foundational concepts underpinning electrical engineering. This includes defining fundamental electrical quantities such as charge, current, voltage (potential difference), resistance, and electromotive force, along with differentiating between conductors and insulators. Learners will delve into circuit laws like Ohm's Law, Kirchhoff's Laws (current and voltage), and potentially Thevenin's theorem for circuit analysis. Furthermore, the principles of magnetism, including electromagnetic induction, and their application in transformers, which are crucial for voltage transformation in AC systems, must be discussed. The discussion should extend to how these principles govern the behavior of various electrical circuits under both direct current (DC) and alternating current (AC) conditions.
Learning Outcome 2: Analyse the performance, operation and control of AC and DC motors.
Answer: This learning outcome focuses on the practical application of electrical principles to rotating machinery. Learners are expected to analyze the operational characteristics of both Alternating Current (AC) and Direct Current (DC) motors. This involves understanding their fundamental working principles, such as the interaction between magnetic fields and current-carrying conductors to produce torque. The analysis should cover aspects of their performance, including torque-speed characteristics, efficiency, and power factor (for AC motors). Furthermore, various methods for controlling the speed and direction of rotation for both AC and DC motors, such as variable frequency drives (VFDs) for AC motors and armature voltage or field current control for DC motors, must be explained and evaluated.
Learning Outcome 3: Explain the different methods of electricity distribution.
Answer: This outcome requires an explanation of the various systems and methods employed to distribute electrical power from generation sources to end-users. This includes detailing the stages of electricity distribution, from high-voltage transmission lines to lower-voltage distribution networks. Learners should explain the role of substations, transformers (for step-up and step-down), and different cabling systems. Considerations such as single-phase and three-phase distribution, radial and ring main systems, and the advantages and disadvantages of each method in terms of efficiency, reliability, and safety should be covered. The explanation should also touch upon the relevant regulations and standards governing electricity distribution within the built environment.
Learning Outcome 4: Prepare a proposal for a non-domestic lighting installation.
Answer: For this outcome, learners need to demonstrate their ability to apply electrical design principles to a practical scenario. This involves preparing a comprehensive proposal for a lighting installation in a non-domestic building, such as an office, retail space, or industrial facility. The proposal should include aspects such as surveying the site, calculating lighting requirements based on relevant standards (e.g., lux levels), selecting appropriate lighting luminaires and control systems (e.g., LED, fluorescent, dimming, occupancy sensors), considering energy efficiency and sustainability, designing the wiring layout, and ensuring compliance with relevant electrical regulations and safety standards. The proposal should be structured professionally, outlining the scope, methodology, materials, cost estimates, and projected performance of the proposed lighting solution.
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While people have studied electricity since the 17th century, and had an awareness of the phenomenon as early as the 3rd millennium BCE, it was the 20th century that saw the rapid expansion of electrical devices and installation that has defined modern society. No longer limited to the presence of natural light, we are able to work, play and enjoy activities at any time. The availability of electrical current, to almost any location, has also led to a proliferation of devices that make many mundane tasks simple.
This unit aims to provide the students with a broad understanding of electrical machines, distribution of electric energy and lighting design basics. This unit develops the skills needed to design simple electrical and lighting installations in compliance with relevant legislation and standards.
SAVE DISTINCTION MARKS IN UNIT 19 PRINCIPLES OF ELECTRICAL DESIGN AND INSTALLATION - PEARSON BTEC LEVEL 4 HND IN CONSTRUCTION AND THE BUILT ENVIRONMENT ASSIGNMENT WHICH IS WRITTEN BY OUR PROFESSIONAL WRITER!
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Essential content
LO1 Discuss the fundamentals of electricity, magnetism, transformers and circuits
Magnetic circuits Electric circuits Transformers
Health & safety legislation
LO2 Analyse the performance, operation and control of AC and DC motors
DC motor circuits AC motor circuits
Operating characteristics of AC and DC motors Motor selection and specification
LO3 Explain the different methods of electricity distribution
Types of loads
Calculations for assessing electrical load Alternative power supplies
Applications, characteristics and features of Uninterruptible Power Supply (UPS) systems
Methods of electricity distribution National and local regulations Health & safety legislation
LO4 Prepare a proposal for a non-domestic lighting installation
Types of lamps and luminaries
Selection and specification of lamps and luminaries
Efficacy and energy design requirements of lighting installations General and emergency lighting installations
National and local regulations
Health & safety legislation.
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Pass
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Merit
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Distinction
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LO1 Discuss the fundamentals of electricity, magnetism, transformers and circuits
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D1 Evaluate electrical and magnetic circuits for a given non-domestic installation
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P1 Explain the performance of electrical and magnetic circuits, including transformers
P2 Assess the Health & Safety issues associated with electrical and magnetic circuits
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M1 Design a simple electrical circuit for a given non- domestic building
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LO2 Analyse the performance, operation and control of AC and DC motors
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D2 Compare the suitability of AC and DC motors for a given context
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P3 Analyse the principles that underpin the operation and control of AC and DC motors
P4 Calculate the performance of AC and DC motors
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M2 Select a motor, based on performance needs, for a given non-domestic application
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LO3 Explain the different methods of electricity distribution
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LO3 and LO4
D3 Evaluate the relationship between lighting design and electrical circuit design for a non-domestic installation
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P5 Explain different methods of electricity distribution
P6 Describe the equipment used for different methods of electrical distribution
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M3 Calculate the electrical load for a given non- domestic building, in order to select a suitable distribution panel
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LO4 Prepare a proposal for a non-domestic lighting installation
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P7 Discuss the principles that underpin the design and installation requirements of lighting applications
P8 Produce drawings and details for electricity distribution and lighting for a non-domestic installation
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M4 Illustrate circuits and distribution as part of a design proposal
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