Electrical and Electronics: Module 9

Module 9A: Residential Branch Circuits and Services (Core)

Suggested time: 15 - 20 hours

Level: Advanced

Prerequisite: Module 8

Foundational Objectives

To read and interpret schematic diagrams and other technical documents.
To design and/or build circuits to an acceptable standard capable of producing a desired output.
To increase self-esteem from success with the equipment, materials and techniques used.
To be knowledgeable of the various principles and characteristics of electricity and electronics.

Common Essential Learnings Foundational Objectives

To understand the circuits used in residential wiring. (COM)
To interpret blueprints and make decisions needed to provide electrical services to a residence. (CCT)
To make calculations for branch circuits. (NUM)

Learning Objectives	Notes
RESIDENTIAL BRANCH CIRCUITS
9.1 To identify the different circuits used in residential wiring. (COM)	Have students identify different branch circuits that are being used for residential wiring. Refer to Drafting and Computer-Aided Design, Module 31, Reading Technical Drawings, as an additional resource.
9.2 To calculate the current requirements of various sized loads. (NUM)	In accordance with the current federal and provincial electrical codes, have students calculate the different load sizes.
9.3 To select wire sizes for different branch circuits.	In accordance with the current federal and provincial electrical codes, have students determine wire sizes for different branch circuits.
9.4 To lay out all branch circuits showing all outlet boxes on a residential blueprint. (CCT, IL)	Examine several blueprints. Then have students design their own wiring/electrical layout following instructions in accordance with the current federal and provincial electrical codes
9.5 To determine the number of branch circuits required for a given residential service. (NUM, IL)	In accordance with the current federal and provincial electrical codes, have students determine the minimum number of branch circuits needed for residential service of a particular size.

Module 9B: Residential Circuit Layout (Core)

Suggested time: 15 - 25 hours

Level: Advanced

Prerequisite: Module 9A

Learning Objectives	Notes
RESIDENTIAL WIRING LAYOUT
9.6 To calculate the service size for a given residence. (NUM)	Have students calculate a service size for a residence under 80m². Calculate a service size for a residence over 80m² with various types of loads.
9.7 To identify the various parts of a residential service.	Review all the parts and requirements of a residential service, (including panelboard size, service size, service overcurrent device, grounding requirement and bonding).
9.8 To wire, with supervision, a residential service. (TL)	Lay out and wire a residential service according to the guide, in accordance with the current federal and provincial electrical codes Modules 13, 24 and 31 from the Drafting and Computer-Aided Design Curriculum Guide are useful as a reference for this objective. Students should be able to install both an overhead service and an underground for a single family dwelling. In accordance with the current federal and provincial electrical codes, have students determine the proper size and type of circuit breaker needed for the residential service described.