Gas Fitter Practice · Question
What is the primary function of a thermal cut-off device (TCO) on a gas appliance?
A TCO is a safety device designed to melt and break an electrical circuit, shutting down the appliance if internal temperatures exceed a safe predetermined limi
Start free practice for Gas Fitter Practice
200 questions · no signup required · 40 free questions per day
Question: What is the primary function of a thermal cut-off device (TCO) on a gas appliance?
Answer options:
- To regulate gas pressure
- To detect the absence of a pilot flame ✅ To shut off gas flow in case of excessive temperature
- To monitor ambient room temperature
Correct answer: To shut off gas flow in case of excessive temperature
Explanation: A TCO is a safety device designed to melt and break an electrical circuit, shutting down the appliance if internal temperatures exceed a safe predetermined limit.
Start free practice for Gas Fitter Practice
200 questions · no signup required · 40 free questions per day
More about Gas Fitter Practice
Related Questions
- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
- Which of the following is the primary purpose of a drip leg (sediment trap) in a gas piping system?
- What is the minimum air-to-gas ratio required for complete combustion of natural gas?
More for Gas Fitter Practice candidates
Practice tests
Question explanations
- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Gas Fitter Practice Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.