Bonding of multiple AHUs

[Maurice Ibanez]

The senerio is that we have 24 AHUs installed in two mechanical rooms. Are these units required to be Bonded? if so what article applies?

 

[Ponchik]

The circuit that supplies power to each unit has a EGC which will satisfy your electrical bonding requirement.
Other than that I am not aware of other codes that requires all of them bonded together.