G3 HVAC PrepBOX

Ontario G3 Gas Technician exam preparation

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G3 Safety and Workplace Practices: What's Tested and How to Study It

Occupational health and safety, personal protection, fire extinguishers and site conduct.

Straightforward marks for anyone who has worked on a site, and easy to under-prepare for precisely because it feels like common sense. The exam wants the specific rule, not a sensible instinct.

What this topic covers

How to study it

Learn all five fire extinguisher classes as a set, including K. Questions often give you the situation and expect the class, or the class and expect the situation — knowing them one way round is only half the job.

Fire extinguisher classes explained →

Sample questions

Five real questions from this topic, with the answers shown. The app holds 107 in this area alone, out of 1,184 across the whole syllabus.

What are the key safety categories that should be considered by a fuel technician in Ontario?

What type of piping are tube benders designed to be used for?

Which of the following metals is NOT a ferromagnetic material?

What types of copper tubing are permitted by Code?

What is the area of a rectangular air supply opening measuring 12" x 10"?

Practise this topic free →

The other topics

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