Which statement correctly pairs a temperature with its classification?

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Prepare for the NFPA 13R: Sprinkler Systems for Low-Rise Residences Test. Utilize flashcards, multiple choice questions, and detailed explanations to excel. Ace your exam with confidence!

Multiple Choice

Which statement correctly pairs a temperature with its classification?

Explanation:
The main idea here is how sprinkler temperature ratings map to the built-in classifications used for residential systems. The Ordinary classification refers to sprinkler heads rated around 170°F, which is the typical upper limit commonly used for residential (13R) installations. So a temperature of 170°F sits within the Ordinary range, making it the best pairing. The other options push beyond Ordinary: 225°F is higher and would fall into a higher classification, not Ordinary, and 300°F is well into the high-temperature range. That’s why those pairings don’t fit the Ordinary category.

The main idea here is how sprinkler temperature ratings map to the built-in classifications used for residential systems. The Ordinary classification refers to sprinkler heads rated around 170°F, which is the typical upper limit commonly used for residential (13R) installations. So a temperature of 170°F sits within the Ordinary range, making it the best pairing.

The other options push beyond Ordinary: 225°F is higher and would fall into a higher classification, not Ordinary, and 300°F is well into the high-temperature range. That’s why those pairings don’t fit the Ordinary category.

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