I have a job at the NIH facility in Bethesda Maryland that I need to run a nitrogen line to a room being remodeled. We want to run the nitrogen line through an electrical room. The nitrogen line would run over several electrical panels. Can I run the nitrogen line over the electrical panels, Is this acceptable with the NEC codes? Nitrogen is non combustible in fact it takes the air away from a fire should a fire start in the electrical panel. I would appreciate your response to this question, Thanks for your time. If the nitrogen line can run in the electrical room code you please provide me with a code number.