AnsweredAssumed Answered

Do medical gas piping system should be grounded if installed above ceiling space?

Question asked by romeo.aggabao on Nov 22, 2016

Per my previous inspection saw medical gas piping connected to a copper grounding. I did some verification & NEC say agreed to this mandate. I can't find requirements in NFPA 99. Please advise which one to follow. Thanks All in advance for your feedback.