Question 11009 of 731 · Texas Journeyman Electrician Exam
How must emergency lighting systems be designed with respect to lamp failure?
Exactly one answer is correct.
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Correct answer to question 11009
- A: The failure of any individual lighting element must not leave a required space in total darkness
Explanation
Emergency lighting must be arranged so that the failure of any single lighting element, such as a lamp, will not leave in total darkness any space that requires emergency illumination. Using two or more luminaires on separate circuits, or unit equipment, meets this goal.
More questions: Emergency, Limited Energy and Communications
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