📝 Learning Competencies: Explain Signs and Symbols for Electrical Services
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🎯Objectives
At the end of the lesson, you should able to:
Identify pictorial and schematic diagrams and the different types of electrical circuits (series, parallel, and combination).
Draw and interpret simple pictorial and schematic diagrams for different types of electrical circuits.
Show carefulness and appreciation for the importance of diagrams in safe and accurate electrical work.
✏️ PRE-TEST
Instructions: Read each question carefully and select the one best answer for all 5 multiple-choice questions in the Google Form before submitting.
📑 Lesson 2: Work Diagrams in Electrical Services
💡 The flow of a current in a conductor of a wire can be represented by diagram.
TWO TYPES OF DIAGRAM
TWO TYPES OF DIAGRAM
A. PICTORIAL DIAGRAM
A. PICTORIAL DIAGRAM
It is a sketch of electrical circuit that shows the external appearance of each component.
It is much like a photograph of the circuit and uses simple images of parts.
B. SCHEMATIC DIAGRAM
B. SCHEMATIC DIAGRAM
A sketch showing the components of the circuit using standard electrical symbols.
It shows the actual number of components and how the wiring is routed but not the actual location.
TYPES OF CIRCUITS
TYPES OF CIRCUITS
SERIES CIRCUIT
SERIES CIRCUIT
A circuit in which lamps are arranged in chain, so that current has only one path to take.
The current is the same through each load.
PARALLEL CIRCUIT
PARALLEL CIRCUIT
A circuit in which lamps are connected across the wires.
The voltage across each load on a parallel circuit is the same.
📽️ Watch the video below to learn more about Series and Parallel Circuits.
📝 Activity: LET'S TRY THIS!
From Picture to Schematic: Draw a schematic work diagrams based on the simple electric circuit picture given. Click the link below to proceed.
✏️ POST TEST
Instructions: Read each question carefully and select the one best answer for all 5 multiple-choice questions in the Google Form before submitting.
✏️ WHAT I HAVE LEARNED?
Instruction: On a separate sheet of paper, answer the following questions. Your answers will be evaluated using the scoring rubrics.
Why is it important to carefully follow electrical diagrams when doing electrical work?
How does understanding diagrams help keep electrical work safe and accurate?
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