Basic Electricity - Senior Secondary 2 - Ducting electrical system

Ducting electrical system

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TERM: 3RD TERM

WEEK SIX

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: DUCTING ELECTRICAL SYSTEM

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Define ducting

II.) Identify the types of ducting system

III.) State the advantages of ducting

IV.) State the disadvantages of ducting

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of ducting system and discusses the types of ducting

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher discuss the advantages and disadvantages of ducting system.

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

DUCTING ELECTRICAL SYSTEM

A ducting wiring system, also known as ductwork or ducting, refers to a method of electrical wiring installation where electrical cables or conduits are housed within ducts or channels embedded within building structures, such as floors, walls, or ceilings.

Types of Ducting

  1. Metal Ducting: Metal ducting consists of metal conduits or channels that are installed within building structures to house electrical cables. It offers durability, mechanical protection, and fire resistance.
  2. Plastic Ducting: Plastic ducting, often made of PVC (Polyvinyl Chloride) or other thermoplastics, is lightweight, cost-effective, and easy to install. It is commonly used in residential and commercial buildings where simplicity and affordability are priorities.
  3. Concrete Ducting: Concrete ducting involves embedding electrical conduits or channels within concrete structures, such as floors, walls, or columns. It provides robust protection and longevity.

Advantages of Ducting

  1. Ducting systems conceal electrical cables within building structures, minimizing their visibility and impact on the aesthetics of the space.
  2. Ducting provides physical protection to electrical cables, shielding them from damage, moisture, dust, and other environmental hazards.
  3. By routing cables within building structures, ducting systems help to optimize the use of available space and reduce the need for additional surface-mounted conduits or cable trays
  4. Ducting systems offer flexibility in routing electrical cables, allowing for customized configurations and adaptations to suit specific installation requirements.

Disadvantages of Ducting

  1. Installing ducting systems can be complex, especially in retrofit or existing building situations where access may be limited. Proper installation requires careful planning, coordination with other trades, and precise routing within building structures.
  2. Ducting systems can be more expensive than surface-mounted cable management methods, especially for large or intricate installations.
  3. Accessing electrical cables within ducting systems for maintenance or repairs can be challenging, especially if the ducts are embedded within building structures.

EVALUATION: 1. What is ducting?

  1. Mention 3 types of ducting
  2. Identify 3 advantages of ducting
  3. Identify 3 disadvantages of ducting

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively