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No portion of a detector may be located within _________ of the side wall if ceiling mounted?

  1. 2 inches

  2. 4 inches

  3. 6 inches

  4. 8 inches

The correct answer is: 4 inches

The correct answer is based on the standard installation guidelines for ceiling-mounted detectors. Specifically, a detector should not be installed within 4 inches of a side wall. This requirement ensures that the detector can effectively sense smoke, heat, or other potential hazards without being obstructed by walls that could interfere with its ability to detect threats throughout the space. Positioning the detector too close to a wall may result in blind spots or reduced sensitivity, leading to a delayed response in the event of a fire or emergency situation. This guideline is crucial for maximizing the efficacy of the alarm system and ensuring the safety of the area being monitored. Proper placement enhances the detector's performance, allowing for better coverage and quicker alerts in case of an incident.