Given the fact that Myers makes a grounding hub, I think that you will need something more than the standard Myers hub. This bonding is only required by the code at one end of the nipple, but some utilities require both ends to be bonded. Don
Has anyone come up with the final determination on the Myer's hub grounding acceptability for bonding ahead of the main?
I know this was the topic of separate thread, but I never checked to see if anyone came up with a final answer on this.
I wouldn't call the locknut on a Myer's hub a 'standard' locknut. And disregarding concentric KO's the surface area a Myer's hub makes to an enclosure is probably just as much if not more than using a bonding bushing. Not to mention most electricians don't make the connections tightly enough on bond bushings quite often--a mistake less likely and easier to determine during inspection with a Myer's Hub.
"installed between the bottom of a meter socket and the top of a disconnect."
That being the case the nipple contains service entrance conductors, grounding bushings are required regardless of KOs left or not.
2002 NEC 250.92(A)(1) and (2) 250.92(B)(1) and (4)
From the 2002 Handbook regarding 250.92(B)(4)
Note that method (4) requires other similar devices, such as bonding-type locknuts or bushings. Standard locknuts or sealing locknuts are not acceptable as the “sole means” for bonding on the line side of service equipment.
Bob Badger Construction & Maintenance Electrician Massachusetts
If a company makes more than one type of compliant service bonding method (fitting) it doesn't necessarily mean one is listed for grounding and one is not. I'm sure there are manufacturers who make grounding bushings and grounding locknuts which are both listed fittings.
Steve T The point you make is very valid and well taken. I just assumed that resqcapt19 saying "I think that you will need something more than the standard Meyers hub." indicated that the standard Meyers hub was not suitable for Service Equipment bonding.