Duct work non-metallic separation

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Gategator37

Senior Member
I know that through the furnace equipment grounding conductor that it attaches to the ductwork so therefore is "bonded", but what if there is a non-metallic separation? Does this need to be "jumpered" or only if it is likely to become energized?
 

Dennis Alwon

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Staff member
Location
Chapel Hill, NC
Occupation
Electrical Contractor
I have never done any extra bonding for the duct work however I often wondered about it. I don't know where in the NEC it requires duct work to be bonded. I see metal piping, structural metal, water pipes, but nothing on duct bonding.
 
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