Tools and Equipment for Winding Jobs for SS 3

Class: SS 3
Term: First Term
Week: 4
Age: 17 years
Duration: 60 minutes
Subject: Electrical Installation and Maintenance Work
Curriculum Theme: Electrical Installation
Previous Lesson: Data Communication Cables and Their Uses
Topic: Tools and Equipment for Winding Jobs
Subject Matter: Winding jobs; Tools and equipment e.g. hammers, screw driver; Selection of tools and equipment

Specific Objectives

By the end of the lesson, pupils/students should be able to:

Cognitive Domain

• Define winding jobs in electrical installation.
• Identify various tools and equipment used for winding jobs.
• List the functions of common winding tools like hammers and screwdrivers.
• Explain the factors to consider when selecting tools for winding jobs.

Affective Domain

• Appreciate the importance of using correct tools for specific winding tasks.
• Observe necessary safety precautions when handling winding tools.
• Understand the need for proper tool maintenance.

Psychomotor Domain

• Select appropriate tools for a given winding job.
• Demonstrate the correct handling of basic winding tools.

Reference Materials

The following resources were used in planning this lesson:

• 2014 Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• Electrical Installation and Maintenance Work for Senior Secondary Schools, Book 3
• FCT ERC/NAPPS Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Assorted hand tools: claw hammer, ball-peen hammer, flat-head screwdriver, Phillips-head screwdriver, combination pliers, long nose pliers, wire strippers, measuring tape.
• Examples of electrical wires and coils.
• Charts showing different winding tools and their uses.

Rationale for the Lesson

This lesson is essential for students to develop practical competence in electrical installation. Understanding and correctly using tools for winding jobs ensures efficiency, accuracy, and safety in electrical work. It also lays a foundation for proper maintenance and longevity of electrical equipment.

Prerequisite/Previous Knowledge

Students should have basic knowledge of electrical safety, common hand tools, and fundamental electrical components.

Lesson Content/Board Summary

Tools and Equipment for Winding Jobs

Winding Jobs in Electrical Installation

Winding jobs in electrical installation refer to the process of coiling insulated wires around a core or former to create electromagnetic coils, transformers, motors, generators, and other electrical components. These jobs require precision to ensure the correct number of turns, proper insulation, and efficient operation of the electrical device.

Common Tools and Equipment for Winding Jobs

Various hand tools and some specialized equipment are used to perform winding jobs effectively and safely. These include:

1. Hammers: Used for light striking tasks, shaping, or securing components.
   1. Claw Hammer: Primarily for driving and pulling nails, but can be used for light tapping.
   2. Ball-Peen Hammer: Features a round peen for shaping metal and riveting, useful in coil forming.
2. Screwdrivers: Used for tightening and loosening screws that secure electrical components or parts of winding machines.
   1. Flat-head (Slotted) Screwdriver: For screws with a single slot.
   2. Phillips-head Screwdriver: For screws with a cross-shaped recess.
   3. Pozidriv Screwdriver: Similar to Phillips but with extra radial slots for better grip.
3. Pliers: Versatile tools for gripping, bending, cutting, and stripping wires.
   1. Combination Pliers: General-purpose pliers for gripping, cutting, and bending wires.
   2. Long Nose Pliers: For reaching into tight spaces, bending small loops, and holding small components.
   3. Side Cutting Pliers (Diagonal Cutters): Specifically for cutting wires.
4. Wire Strippers: Used to remove insulation from electrical wires without damaging the conductor. They come in various types, including manual, automatic, and adjustable.
5. Measuring Tape/Ruler: Essential for accurately measuring wire lengths, coil dimensions, and other specifications required for precise winding.
6. Files: Used for smoothing rough edges of metal parts or cores before winding to prevent insulation damage.
7. Vices: Used to hold workpieces securely in place during winding, cutting, or shaping operations.
8. Winding Machines: Specialized equipment used for winding coils efficiently and accurately, especially for large-scale production or complex windings. These can be manual or automatic.
9. Insulation Materials: Such as insulating tape, varnish, and sleeves, used to protect wound wires from short circuits and environmental damage.

Selection of Tools and Equipment for Winding Jobs

Choosing the right tools is critical for the quality, efficiency, and safety of winding jobs. Factors to consider include:

1. Type of Winding Job: Different jobs (e.g., motor winding, transformer winding, small coil winding) require specific tools. For instance, a winding machine is ideal for mass production, while hand tools suffice for small repairs.
2. Material Being Worked On: The type and gauge of wire, and the core material, influence the choice of wire strippers, pliers, and hammers.
3. Precision Required: High-precision windings demand accurate measuring tools and sometimes specialized winding machines.
4. Safety Considerations: Always select tools with insulated handles when working with electrical components to prevent electric shock. Ensure tools are in good condition.
5. Ergonomics and Comfort: Tools should be comfortable to handle to reduce fatigue and improve control, especially for repetitive tasks.
6. Quality and Durability: Invest in high-quality tools that are durable and reliable to ensure long-term performance and safety.
7. Availability: Sometimes, the choice of tool is limited by what is readily available, though efforts should be made to acquire the most suitable ones.
8. Cost: While quality is important, the cost of tools must also be considered, especially for small-scale operations.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Observation, Practical Activity

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Activating Prior Knowledge

Teacher’s Activity: The teacher greets the students and asks them to recall some basic hand tools they know and their uses. The teacher then introduces the topic: “Tools and Equipment for Winding Jobs.”

Pupils’ Activity: Pupils respond by mentioning various hand tools like hammers, screwdrivers, and pliers, and state their general uses.

Learning Point: Basic tool recall

Step 2: Explanation of Winding Jobs

Time: 10 minutes

Teaching Skill: Explanation/Definition

Teacher’s Activity: The teacher explains what winding jobs entail in electrical installation, giving examples of components like coils, transformers, and motors. The teacher emphasizes the importance of precision.

Pupils’ Activity: Pupils listen attentively and ask questions for clarification.

Learning Point: Understanding winding jobs

Step 3: Identification of Winding Tools (Hammers and Screwdrivers)

Time: 10 minutes

Teaching Skill: Demonstration/Identification

Teacher’s Activity: The teacher displays different types of hammers (e.g., claw, ball-peen) and screwdrivers (e.g., flat-head, Phillips-head). The teacher identifies each tool, explains its specific function in winding jobs, and demonstrates its correct handling.

Pupils’ Activity: Pupils observe the tools, listen to the explanations, and identify the tools as demonstrated by the teacher.

Learning Point: Hammers and screwdrivers

Step 4: Identification of Other Winding Tools

Time: 10 minutes

Teaching Skill: Demonstration/Identification

Teacher’s Activity: The teacher continues by displaying and explaining other essential tools such as pliers (combination, long nose, side cutting), wire strippers, measuring tapes, and files. The teacher highlights their uses in winding operations.

Pupils’ Activity: Pupils observe, listen, and identify the various tools and their functions.

Learning Point: Other winding tools

Step 5: Discussion on Winding Equipment

Time: 5 minutes

Teaching Skill: Explanation/Discussion

Teacher’s Activity: The teacher discusses specialized equipment like winding machines and vices, explaining their roles in more complex or repetitive winding tasks. The teacher also mentions insulation materials.

Pupils’ Activity: Pupils participate in the discussion and note the importance of these equipment and materials.

Learning Point: Winding equipment roles

Step 6: Factors for Tool Selection

Time: 5 minutes

Teaching Skill: Explanation/Guidance

Teacher’s Activity: The teacher explains the critical factors for selecting appropriate tools for winding jobs, such as the type of job, material, precision, and safety. The teacher emphasizes necessary precautions.

Pupils’ Activity: Pupils listen and contribute to the discussion on tool selection criteria and safety.

Learning Point: Tool selection factors

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. What is a winding job in electrical installation?
2. Mention two types of hammers and two types of screwdrivers used for winding jobs.
3. State one function of wire strippers and long nose pliers.
4. List three factors to consider when selecting tools for a winding job.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Winding tools knowledge

Step 8: Note-Taking

Time: 10 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on winding jobs, tools, and selection criteria into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Recording lesson notes

Step 9: Conclusion

Time: 5 minutes

Teaching Skill: Reinforcement

Teacher’s Activity: The teacher summarizes the lesson by reiterating the importance of using the correct tools for winding jobs and observing safety. The teacher encourages students to practice identifying and handling the tools.

Pupils’ Activity: Pupils listen to the summary and prepare for the next lesson.

Learning Point: Lesson consolidation

Continuous Assessment/Further Study

Type: Homework/Practice Exercise

Instruction: Answer the following questions and prepare for a practical demonstration of tool identification next week.

1. Describe the difference between a flat-head screwdriver and a Phillips-head screwdriver, and state when each is preferred.
2. Explain why proper tool selection is crucial for safety in electrical winding jobs.
3. Research and list two types of winding machines and their primary applications.
4. Draw and label any three tools discussed in class that are used for winding jobs.

Lesson Keywords

• Winding Jobs – The process of coiling insulated wires to create electrical components like coils, transformers, or motors.
• Hammers – Tools used for striking, shaping, or securing components, such as claw and ball-peen types.
• Screwdrivers – Tools used for tightening or loosening screws, available in flat-head, Phillips-head, etc.
• Pliers – Hand tools for gripping, bending, cutting, and stripping wires, including combination and long nose types.
• Wire Strippers – Tools specifically designed to remove insulation from electrical wires without damaging the conductor.
• Tool Selection – The process of choosing the appropriate tool based on job type, material, precision, and safety.

Differentiation

Support for struggling learners: The teacher will provide simplified diagrams of tools and their uses, offer one-on-one guidance during tool identification, and allow extra time for practical observation and handling. Grouping them with more capable peers for practical activities will also be beneficial.

Challenge for advanced learners: Advanced students can be tasked with researching specialized winding tools or equipment not covered in detail, investigating the safety standards for electrical tools, or designing a simple winding jig for a specific coil type.

Suggested Lesson Videos

YouTube search: electrical winding tools SS3 nigeria
YouTube search: types of screwdrivers and pliers electrical