Final answer:
Protective covers for notification appliances may require grounding to ensure electrical safety, especially in outdoor or high-moisture environments.
Step-by-step explanation:
Protective covers for notification appliances may require grounding to ensure electrical safety. By grounding the cover, any current that may leak to the cover will be safely directed to the ground, preventing shock hazards. This is especially important in areas where there is a risk of moisture or other conductive materials coming into contact with the appliance.
For example, in outdoor environments or locations where water or other liquids are present, such as swimming pools or bathrooms, protective covers should be properly grounded. This ensures that in the event of a fault or damage to the appliance, any current leaking to the cover is safely conducted away.