Answers

Question and Answer:

  Home  Electrical Engineering

⟩ A non-maintained emergency light is classified as NM3. This means that the luminary will illuminate during

* a) Normal conditions then automatically switch off after three hours

* b) Any power failure for up to three hours

* c) Both normal and power failure conditions then automatically switch off after three hours

* d) Power failures that last longer than three hours but not shorter than three hours

Answer – b

 241 views

More Questions for you: