Low-Voltage Fundamentals and Safety
The foundations of the low-voltage trade, followed through Cobalt Line Systems' Ottawa jobs: what the trade installs, Class 1, Class 2 and communication circuits under the Canadian Electrical Code, Ohm's law and power, series and parallel circuits and voltage drop, AC, power supplies and PoE budgets, batteries and backup power, shock and arc flash awareness under CSA Z462, ladders, lifts, ceilings and confined spaces, tools and meters, drawings and riser diagrams, who may do the work in Ontario and other provinces, and a capstone installation from site survey to sign-off.
LVT-110 12 lessons · 3 h 52 min ▶ Video lessons coming soon
Offered by HSM University · Low Voltage Systems
This is the Canadian version of this course. See the American version.
What you'll learn
- Describe the low-voltage trade, the systems it installs and the way it works with other trades on construction projects and in occupied buildings
- Distinguish extra-low voltage, Class 1, Class 2 and communication circuits under the Canadian Electrical Code, and explain why a circuit's class is set by its listed power source
- Apply Ohm's law and the power equations to the devices and cables of low-voltage systems, and choose the correct units, prefixes and wire sizes
- Analyse series and parallel circuits, calculate voltage drop on single and daisy-chained cable runs, and choose a wire size that keeps devices within their operating range
- Explain AC, transformers and DC power supplies, load power supplies within their ratings, and plan Power over Ethernet budgets
- Size backup batteries for standby and activity periods, explain fail-safe and fail-secure locking, and install and maintain batteries safely
- Recognize shock and arc flash hazards, apply the approach boundaries of CSA Z462, treat unknown conductors as live and take part in lockout
- Select, inspect and use ladders and elevating work platforms, control the hazards of ceiling spaces and recognize confined spaces
- Use hand tools, power tools, cable installation tools and multimeters safely, including measurement categories, ghost voltages and silica dust control
- Read drawing sets, legends, specifications and riser diagrams, perform cable takeoffs and keep marked-up records
- Explain who may do low-voltage, power and alarm work in Ontario and other provinces, and the industry certifications of the trade
- Plan and complete a small low-voltage installation safely from site survey through testing, sign-off and handover
Course content
12 lessons · 3 h 52 min total · final exam
- 1 The low-voltage trade 22 min · quiz
- 2 What counts as low voltage: Class 2, Class 3 and limited-energy circuits 18 min · quiz
- 3 Voltage, current, resistance and power 19 min · quiz
- 4 Series and parallel circuits and voltage drop 18 min · quiz
- 5 AC, DC and power supplies 18 min · quiz
- 6 Batteries and backup power 19 min · quiz
- 7 Safety around power systems and arc flash awareness 19 min · quiz
- 8 Ladders, lifts, ceilings and confined spaces 19 min · quiz
- 9 Hand tools, power tools and test equipment 19 min · quiz
- 10 Reading drawings, specifications and riser diagrams 19 min · quiz
- 11 Who may do the work in each province 20 min · quiz
- 12 Capstone: a safe first install from survey to sign-off 22 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
The foundations of the low-voltage trade, followed through Cobalt Line Systems' Ottawa jobs: what the trade installs, Class 1, Class 2 and communication circuits under the Canadian Electrical Code, Ohm's law and power, series and parallel circuits and voltage drop, AC, power supplies and PoE budgets, batteries and backup power, shock and arc flash awareness under CSA Z462, ladders, lifts, ceilings and confined spaces, tools and meters, drawings and riser diagrams, who may do the work in Ontario and other provinces, and a capstone installation from site survey to sign-off.