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

Copper tubing used for fuel gas under NFPA 54 (2012) shall be which type?

Type M only, because it is the thinnest and cheapest. Type DWV, because gas is not a water service. Type K or Type L. Any refrigeration ACR coil regardless of listing.

Correct Answer:

Type K or Type L.

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