Ordinary temperature-rated sprinklers are suitable for ambient temperatures up to what?

Ordinary temperature-rated sprinklers are suitable for ambient temperatures up to what?

• A. 150°F
• B. 200°F
• C. 80°F
• D. 100°F

Answer: (D)

Understanding how sprinkler temperature ratings relate to ambient conditions is key. The temperature rating on a sprinkler indicates the ambient temperature at which its activation element is designed to respond. Ordinary temperature-rated sprinklers are intended for spaces where the ambient temperature will not exceed 100°F. If an area could experience higher temperatures (for example, near a furnace room or in a sunlit, unconditioned space), you’d choose a sprinkler with a higher rating, such as 150°F or 200°F, to prevent premature activation from the surroundings. So the maximum ambient temperature for ordinary-rated sprinklers is 100°F. The other options represent higher or lower ratings that don’t define the ordinary category.

Understanding how sprinkler temperature ratings relate to ambient conditions is key. The temperature rating on a sprinkler indicates the ambient temperature at which its activation element is designed to respond. Ordinary temperature-rated sprinklers are intended for spaces where the ambient temperature will not exceed 100°F. If an area could experience higher temperatures (for example, near a furnace room or in a sunlit, unconditioned space), you’d choose a sprinkler with a higher rating, such as 150°F or 200°F, to prevent premature activation from the surroundings.

So the maximum ambient temperature for ordinary-rated sprinklers is 100°F. The other options represent higher or lower ratings that don’t define the ordinary category.