Basic Electricity - Senior Secondary 2 - Trunking electrical system

TERM: 3^RD TERM

WEEK FIVE

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: TRUNKING ELECTRICAL SYSTEM

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

I.) Define trunking

II.) Identify the types of trunking

III.) Identify the advantages of trunking

IV.) Identify the disadvantages of trunking

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

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

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

TRUNKING ELECTRICAL SYSTEM

Trunking refers to a type of cable management system used in electrical installations to organize, protect, and conceal electrical cables or wires. It consists of a rectangular or square-shaped enclosure made of plastic, metal, or other materials, with a removable or hinged lid for easy access to the cables inside.

Types of Trunking

1. PVC Trunking: PVC (Polyvinyl Chloride) trunking is the most common type of trunking and is widely used in electrical installations due to its affordability, durability, and ease of installation. It is available in various sizes and configurations to accommodate different cable capacities and installation requirements.
2. Metal Trunking: Metal trunking, typically made of steel or aluminum, offers enhanced mechanical protection and fire resistance compared to PVC trunking.
3. Adaptable Trunking: Adaptable trunking systems feature a modular design that allows for customization and flexibility in cable management. They typically include a range of accessories such as dividers, bends, tees, and junction boxes to create tailored solutions for specific installation needs.
4. Wire Mesh Trunking: Wire mesh trunking, also known as cable tray or basket tray, is an open-style cable management system made of wire mesh or perforated metal. .

Advantages of Trunking

1. Trunking provides a structured and organized way to manage electrical cables, allowing for neat and orderly routing within buildings or structures. T
2. Trunking encloses electrical cables within a protective enclosure, shielding them from physical damage, moisture, dust, and other environmental hazards.

3.By concealing cables and reducing trip hazards, trunking enhances safety in buildings and workplaces, reducing the risk of accidents or injuries caused by loose cables or wires.

4. Trunking systems often feature removable or hinged lids that provide easy access to the cables inside for installation, maintenance, or repairs. This facilitates faster troubleshooting and reduces downtime in case of faults or issues.

Disadvantages of Trunking

1. Trunking systems can be relatively expensive compared to other cable management methods, especially for larger installations or systems with complex configurations.
2. Trunking systems have a finite capacity for accommodating cables, and exceeding this capacity can lead to overcrowding and reduced effectiveness.
3. Installing trunking systems can be complex, especially in retrofit or existing building situations where accessibility may be limited.

EVALUATION: 1. What is trunking?

2. Mention 4 types of trunking you know
3. Mention 4 advantages of trunking
4. Mention 2 disadvantages of trunking

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively