Would you install a bond bushing in this scenario?

Q

QA/QC guy

Member
Location
Mesa, AZ and Cheyenne, WY
Occupation
A/QC Engineer for Commissioning
I have 2 local disconnects from different busways (277/480VAC @100A).
They feed S1 and S2 of an MTS.
The raceway between them is NON-metallic liquid tight.
One of the boxes has reducing washers due to an oversized hole (not concentric or eccentric knock-outs) to fit the raceway.
I do not believe a bond bushing is necessary because these are feeder circuits not service conductors.
Another electrician thinks it is due to NEC 250.97 and 250.92B (2020 NEC).
We've searched the code and have found: "if you torture the code book enough - it will confess to anything".
I would like to hear opinions from electricians or inspectors.
 
QA/QC guy said:
Yes, I am. I think it is unnecessary. Another inspector keeps insisting that bond bushings are necessary because of the eccentric knockouts. I am trying to prove a point by asking this question.
Click to expand...
Knock outs have nothing to do with plastic raceways. I think somebody needs to understand what bond bushings do.

It would be as absurd as this.

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QA/QC guy said:
Yes, I am. I think it is unnecessary. Another inspector keeps insisting that bond bushings are necessary because of the eccentric knockouts. I am trying to prove a point by asking this question.
Click to expand...
What does this inspector think a bonding bushing on a non-metallic raceway would accomplish? As Roger suggested this person has no clue what the purpose of using a bonding bushing actually is.
 
Many years ago, we had a city of Atlanta inspector want a bond to the wood beam in a plant. There was a steel plate that held the beams together, but the structure was all wood posts and beams! LOL!
 
I should not admit this, but once when I was an apprentice (many moons ago), I rubber taped and insulated a splice in a bare SE cable neutral. Fortunately, I don't think there are photos of that genius move. Being so green, I just thought all splices should be insulated. How far I've come. Cue laughing now.

Mark
 
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