Equipment Grounding Conductor History

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Sberry said:
In the box the tab is legal, if the device is mounted in the cover then you need a pigtail to the box.
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Ahh I see I just miss read it. So yeah B677 You would be required to have the pigtail if the yoke isn't directly mounted to the box like a 4 square raised cover.
 
When I moved to my current home a few years ago, I installed a few additional circuits in an existing subpanel in an outbuilding (on its own service) that was fed by a feeder in EMT. Doing a little due diligence I put my ohmmeter on the grounding and neutral bars in the subpanel; was really surprised it was jumping around from 7K to 10K or so. What the heck? I looked in the main panel and didn't see anything wrong. The EMT looked good but I went down the line measuring resistance across all the couplers; they were all good until I got to a conduit body. It was some sort of bolt-together configurable model like this: https://www.grainger.com/product/52NE19

I took the darn thing apart and all the individual sections were painted; there wasn't an effective ground path between them. I scraped a bunch of paint off that seemed to mostly fix it, but I still didn't trust it. I supplemented it with a 6 AWG jumper bonding the 2 lengths of EMT together.
 
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