My question is this. At the main distribution panel the bottom is completely open for conduit entry. All pipes coming thru slab are rigid metal conduit that transition to schedule 40 pvc below. Do all of the pipes require bonding bushings?
At the main distribution panel the bottom is completely open for conduit entry. All pipes coming thru slab are rigid metal conduit that transition to schedule 40 pvc below. Do all of the pipes require bonding bushings?
