NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

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For a single-family dwelling gas-piping system, NFPA 54 (2012) 8.1.4 requires a pressure test of not less than 3 psi for at least how long?

10 minutes 1 minute 30 minutes in all cases, copied from NFPA 31 24 hours minimum on every house

Correct Answer:

10 minutes

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