Today an Inspector told me that I need to have a Bonding bushing on both my 1 1/4 EMT coming into and exiting the PVC pull box. Its running from the new DP panel up to the roof for new pumps for the Chillers. Its 408 v 14.6 amps so I ran #10 wire(30amp breaker) with a ground straight through all the way from the panel to the motors disconnect. I have a bonding bushing on my disconnect due to having to use the concentric knockouts. The inspector is well known for being a *****(and made me hang an existing 75kva transformer in an existing electrical room due to 1/4" shy of clearance from the back wall) and before I ask him for the article number I've tried looking through the NEC (2008) and I'm not having any luck. I've went over it with my PM and he agrees with me that its not needed and after going through the code book I'm having no luck. Is it something NEW in the 2011 code book or have I been doing it wrong and getting away with it for years now? Thanks for any and all help.
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