Red Seal Gasfitter — Class B Practice Exam

Which statement best describes a Class B gasfitter?

1. They are qualified to handle high-pressure gas systems

2. They specialize exclusively in natural gas

3. They are qualified to install and service gas appliances and systems that operate at low pressures

4. They install primarily commercial gas equipment

The correct answer is: They are qualified to install and service gas appliances and systems that operate at low pressures

A Class B gasfitter is specifically trained and licensed to install and service gas appliances and systems that operate at low pressures. This includes residential and light commercial applications. Their expertise ensures that they can work safely and effectively with natural gas and propane systems where the pressure does not exceed certain limits, allowing for compliance with safety standards and regulations. The emphasis on low-pressure systems sets them apart from higher-tier classifications; thus, their knowledge is tailored to scenarios typically found in homes and smaller establishments rather than commercial settings or high-pressure applications. Understanding this scope is crucial for safe operation and installation, which is why this statement accurately describes the role of a Class B gasfitter.