The power source for a nonpower-limited fire alarm circuit shall not operate at more than _____.
See answer and applicable Code reference
The correct answer is: c) 600V
Article 760 covers the installation of wiring and equipment of fire alarm systems, including all circuits controlled and powered by the fire alarm system. As per Sec. 760.41(A), "The power source of non-power-limited fire alarm circuits shall comply with Chapters 1 through 4, and the output voltage shall be not more than 600V, nominal."