Which of the refrigerant ratings indicates that a refrigerant is considered a lower-toxicity refrigerant?

A) A3 B) B3 C) B1 D) B2


A

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What are some of the down sides to solid-state devices?

What will be an ideal response?

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Match the definition to the correct term.

A. Fat. B. Cud-chewing animal with a forestomach. C. Respiratory disease caused by bacteria and or viruses. D. Scientists who studies parasites.

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How are the indoor sections of mini-split heat pump systems normally installed?

A) They are mounted on the ceiling or hung on a wall. B) The indoor section is installed in an attic or basement and ducted to the conditioned space. C) They are mounted in a window with the refrigerant lines running out the back. D) A large hole must be cut in an outside wall and extra framing added to support the unit.

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NEC Section 230.70 requires that the service disconnecting means be accessible and located _____

A) outside B) inside C) either outside or inside D) in a separate utility area

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