Inspection failed for bonding locknut, NEC code needed please

MrTomas

MrTomas

Member
Location
Pennsylvania
Occupation
Software Engineer
My standby generator final electrical inspection failed due to lack of a bonding locknut on the supply entrance to the ATC shown in the picture below circled in yellow. I had to arrange for the inspection myself (I am the homeowner) because my contractor did not do it. I advised the contractor of the inspection failure and they so far have ignored me. I would like to be able to quote to them the specific section in NEC 2017 that covers this. Help, please.
moK0nSD.png
 
The inspector that failed this should have (or be able to) provide a code citation. No citation = no violation.

A less pleasant question, feel free not to answer, did you already pay in full?
 
Yes, I paid the $225 fee to the inspector. He was kind enough to offer if I send him a pic of the fix he would give me the sticker without charging me a re-inspection fee. And no citation. I would prefer the contractor to make the fix and not have it become my problem. So. Since there IS a violation without a citation, can we get a citation here?
 
You need a bonding locknut (or other device) on the offset nipple on one side if there are no concentric or eccentric KO's. Since it's already wired up look into a bonding wedge.

250.92(B) Method of Bonding at the Service. Bonding jumpers meeting the requirements of this article shall be used around impaired connections, such as reducing washers or oversized, concentric, or eccentric knockouts. Standard locknuts or bushings shall not be the only means for the bonding required by this section but shall be permitted to be installed to make a mechanical connection of the raceway(s). Electrical continuity at service equipment, service raceways, and service conductor enclosures shall be ensured by one of the following methods:
(1) Bonding equipment to the grounded service conductor in a manner provided in 250.8
(2) Connections utilizing threaded couplings or threaded hubs on enclosures if made up wrenchtight
(3) Threadless couplings and connectors if made up tight for metal raceways and metal-clad cables
(4) Other listed devices, such as bonding-type locknuts, bushings, or bushings with bonding jumpers
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LarryFine said:
He meant the contractor.
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Yes, I paid the contractor in full back in October when the job was done. And at that time I was unaware there was a need to do a final inspection for the township. I only learned that was required when the township contacted me wanting to get paid for the permit. After I paid for the permit, I got a copy and read it. And wow, inspections are required! lol
 
Here the exposed SER cable leaving the bottom of the panel would be considered subject to physical damage 338.12.
 
Can you provide a picture of the overall installation. If the enclosure on the right is a service disconnect I see no need for a bond bushing.
That said, the grounding electrode conductor does not need to be in the ATS IF the service disconnect is on the right
 
infinity said:
Common installation around here. Nothing wrong with it unless there is something like a driveway involved.
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Yeah there actually is a state code amendment here. It says non-metallic cable less than 8 ft above the floor (or grade) that enters the top or bottom of a panelboard has to be protected from physical damage by conduit, raceway, and or other approved means.
 
I hate to belittle a state but in this case we have a state that does not have much in the way of licensing, not much in the way of regulating EC's, not much in the way of requiring EC's to pull permits, open checks for inspection agencies, etc.... It's no wonder the customer is scared.
Sad!!!!
 
roger said:
I hate to belittle a state but in this case we have a state that does not have much in the way of licensing, not much in the way of regulating EC's, not much in the way of requiring EC's to pull permits, open checks for inspection agencies, etc.... It's no wonder the customer is scared.
Sad!!!!
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I agree, if he was across the border in NJ it would have been different. The fact the customer has to give the contractor the code section scary.
 
infinity said:
Yes you're correct there needs to be a bushing on the PVC. What's wrong with the green tape?
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I would think that would be the netural from the generator.
Looks like two ungrounded conductors and and an EGC if taped green.
I do not see a fourth wire that may be an EGC if the green taped is a neutral conductor.
 
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