Basic Electricity - Senior Secondary 2 - Types of wiring II

TERM: 2^ND TERM

WEEK ELEVEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: TYPES OF WIRING II

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

I.) Identify the materials used for each type of wiring

II.) Discuss the functions of each type of wiring

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

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

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

TYPES OF WIRING II

1. Conduit Wiring:

Materials needed for conduit wiring

     - Metal or plastic conduits (such as PVC, galvanized steel, or aluminum)

     - Electrical conductors (wires or cables)

     - Conduit fittings (couplings, elbows, connectors)

     - Fasteners (screws, anchors)

 Functions for conduit wiring

1. I. Conduit wiring provides mechanical protection to electrical conductors by enclosing them within sturdy conduits.
2. The conduits shield the conductors from physical damage, moisture, and environmental hazards, enhancing electrical safety.

III. Conduit wiring also facilitates easy installation, maintenance, and modifications, as conduits can be easily accessed and routed as needed.

2. Surface Wiring:

Materials for surface wiring

     - Surface-mounted conduits or raceways

     - Electrical conductors (wires or cables)

     - Surface-mount boxes

     - Fasteners (screws, anchors)

 Functions for surface wiring

1. Surface wiring allows electrical conductors to be installed along the surface of walls, ceilings, or floors, typically using conduits, cable trays, or raceways.
2. The conduits or raceways provide support and protection to the conductors, preventing damage and ensuring electrical safety.

III. Surface wiring is often used in situations where concealed wiring is impractical or prohibited, providing a convenient and visible solution for electrical installations.

3. Concealed Wiring:

Materials of concealed wiring

     - Electrical conductors (wires or cables)

     - Conduit (if required)

     - Junction boxes or outlet boxes

     - Fasteners (screws, anchors)

 Function for concealed wiring

1. Concealed wiring involves routing electrical conductors inside walls, ceilings, or floors, hidden from view.
2. The conductors are typically installed within concealed channels or cavities within the building structure, providing a neat and unobtrusive appearance.
3. Concealed wiring offers electrical safety and aesthetics, with the conductors protected from damage and environmental hazards while maintaining a clean and seamless look in the living or working space.

4. Overhead Wiring:

Materials for overhead wiring

     - Electrical conductors (wires or cables)

     - Insulators

     - Support structures (poles, towers)

     - Fasteners (bolts, clamps)

Functions for overhead wiring

1. Overhead wiring involves the installation of electrical conductors above ground level, typically supported by poles, towers, or other structures.
2. Insulators are used to suspend the conductors from the support structures while providing electrical insulation.
3. Overhead wiring is commonly used for power distribution, telecommunications, and outdoor lighting in rural and urban areas, providing efficient and reliable electrical connections over long distances.

EVALUATION: 1.  State 4 materials used for conduit wiring

2. Identify 3 functions of Conduit wiring
3. Mention 4 materials for concealed wiring
4. Identify 2 functions of overhead wiring

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively