HVAC Journeyman Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Study for the HVAC Journeyman Exam with our comprehensive resources. Get familiar with the exam format through engaging quizzes, flashcards, and multiple-choice questions designed to enhance your knowledge. Prepare effectively and confidently for your HVAC journey!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What is the minimum gauge of steel wire used to support horizontal metal ducts 10 inches or less in size?

  1. 14 AWG

  2. 16 AWG

  3. 18 AWG

  4. 20 AWG

The correct answer is: 18 AWG

The minimum gauge of steel wire used to support horizontal metal ducts 10 inches or less in size is 18 AWG. This specification ensures that the wire provides adequate strength and support for the ductwork while also adhering to safety standards. Using 18 AWG wire allows for sufficient support without becoming excessively cumbersome or violating guidelines. This gauge is commonly applied in HVAC practices to balance between structural integrity and practical handling. Larger gauges, such as 14 or 16 AWG, would provide even more support but may not be necessary for lighter, smaller ducts, while overly small gauges like 20 AWG would not provide adequate support, risking duct sagging or failure. Therefore, 18 AWG is the optimal choice that balances these factors effectively.

More Questions Like This