G2 Gas Fitter Exam 2026 – 400 Free Practice Questions to Pass the Exam

The B149.1 Installation Code specifically addresses the installation of gas appliances and equipment, which includes guidelines and requirements to ensure safe and effective operation. This code is part of a comprehensive set of standards for the safe installation of gas systems, which encompasses everything from the design and installation of gas piping to the safe operation of appliances connected to these systems.

Focusing on the installation of appliances, the code outlines specifications that appliances must meet to operate safely, including requirements for clearances, venting, and combustion air. Compliance with this code is essential for gas fitters as it ensures that appliances function correctly and do not pose safety hazards to occupants.

Other options are not covered by the B149.1 Installation Code. For instance, electrical systems are subject to different codes and standards, primarily those related to electrical safety, and plumbing systems are covered by plumbing codes. Similarly, HVAC systems are regulated under separate standards that specifically deal with heating, ventilation, and air conditioning installations. Therefore, the emphasis on gas appliance installation under B149.1 is what makes the correct choice the best fit for this question.