What is the minimum clearance from combustible material for hoods and ducts when enclosures are not required?

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Study for the NFPA 96/17A Class K Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the minimum clearance from combustible material for hoods and ducts when enclosures are not required?

Explanation:
Minimum clearance from combustible material for hoods and ducts when enclosures are not required is 18 inches. This distance guards against heat and grease from the ductwork reaching nearby combustibles, reducing the risk of ignition and making it easier to inspect and clean the system. If you rely on enclosures, the exterior clearance rule is superseded by the enclosure requirements, but when enclosures aren’t used, the 18-inch gap is the standard.

Minimum clearance from combustible material for hoods and ducts when enclosures are not required is 18 inches. This distance guards against heat and grease from the ductwork reaching nearby combustibles, reducing the risk of ignition and making it easier to inspect and clean the system. If you rely on enclosures, the exterior clearance rule is superseded by the enclosure requirements, but when enclosures aren’t used, the 18-inch gap is the standard.

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