Most switches used for safety controls in HVAC circuits:
A) Are normally open and wired in parallel with the load they protect.
B) Are normally closed and wired in parallel with the load they protect.
C) Are normally closed and wired in series with the load they protect.
D) Are normally open and wired in series with the load they protect.
Question 2
One advantage relay logic systems have over solid-state logic systems is that:
A) They can control more functions. B) They consume less power.
C) They are not affected by noisy power signals. D) They are faster.
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