Electrical Systems Design · SHS2 Applied Technology

Lesson notes

Learning Objectives

Indicator: 2.5.1.LI.4 - Describe the sequence of Supply-control equipment in a consumer’s premises

By the end of the lesson, learners can:

List the four items of supply-control equipment in the correct sequence as they appear from the service provider’s connection point to the installation.
Explain the function of each piece of supply-control equipment, including the service fuse, meter, mains switch, and distribution board.
Draw and label a block diagram showing the sequence of supply-control equipment in a consumer’s premises.
Justify why the order of supply-control equipment matters for safety and correct metering in an installation.
Identify the distribution board as the point where the installation branches into final circuits, connecting this lesson to the work scheduled for later weeks.

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Curriculum details

Strand: Electrical and Electronic Technology (Strand 5)
Sub-strand: Electrical Systems Design (5.1)
Content standard: 2.5.1.CS.1 - 2.5.1.CS.1 Demonstrate understanding of House Wiring 2.5.1.LO.1 Apply appropriate tools and wiring systems to carry out key wiring processes.
Indicator: 2.5.1.LI.4 - Describe the sequence of Supply-control equipment in a consumer's premises
Suggested placement: Semester 2, Week 9 (Week 29 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

indicator text - p.115: prints the learning-indicator code as "2.5.1.L1.4"
Curriculum reference: NaCCA curriculum document, p. 115

Exemplars (from the NaCCA curriculum)

Talk for learning/collaborative learning: In mixed-ability or mixed-gender groups, guide learners to undertake the following activities:
1. Describe of sequence of supply-control equipment (Service fuse, Meter, Mains switch, Distribution Board)
2. Explain the function of each equipment (eg Mains switch, for isolating the installation from the supply)
Problem-Based Learning: Work in pairs to:
1. Draw the sequence of equipment and label them properly and indicate the function of each
2. Ensure all learners participate in all varieties of practical activities and project work given mixed gender groupings as well.

Assessment (2.5.1.AS.4). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning; Level 4 Extended critical thinking and reasoning.

Teaching and Learning Materials:
- Cables
- Trunkings
- conduit pipes
- accessories
- megger
- fittings
- multimeter