wow never seen those. I thought you were messing with me at first:grin:
Nope, here's a photo:
Sealing locknuts.
The meter pan will have a dam ring at the opening, so a sealing locknut will not seat,
The meter pan will have a dam ring at the opening, so a sealing locknut will not seat, and the utility may not accept it.
I had some (I'm looking for an unoffensive term....) Bonehead - give me grief for using them on top of an enclosure... She said that they were not rated for UV exposure... :roll: I could NOT find out.... So I swapped it... I put it on the inside, and put a bonding locknut on the out side - gave me grief about that... When I told her she'd have to find out herself why the bonding locknut cant get wet - that was the end of it...Sealing locknuts.
I had some (I'm looking for an unoffensive term....) Bonehead - give me grief for using them on top of an enclosure... She said that they were not rated for UV exposure... :roll: I could NOT find out.... So I swapped it... I put it on the inside, and put a bonding locknut on the out side - gave me grief about that... When I told her she'd have to find out herself why the bonding locknut cant get wet - that was the end of it...
Anyway - a bonding Myrers hub is the superior product for longevity when entering from the top - it seals out water, and does little enamal damage where water would collect and rust... Where as the sides a more preferable sealing locknut would be wiser of the choices due to cost. JMSO
Those are not Myer hubs.
I wish I could recall the details but for some reason an inspector rejected a similar set-up where we had used sealing L/R's. I remember doing some research on it and it sure seemed like he was correct. It may have had to do with the UL listing?
AHJ will probably be a big part. Thinking in the top of the gear - Myers hub, in the side - sealing locknut, in the bottom, locknut. Is any buswork exposed to moisture below where the pipe enters? That may be the AHJ applying regulation.
No they are meter hubs, I was just noting the cost, of a meter hub verses the cost of Myer, the OP was intrested in cost, so a sealing locknut would be the lowest cost, but not the best choice for top entry IMO.
The NEC and UL allow a sealing lock nut in any position in a wet location.
The AHJ should have anything to say about it unless they have amended the NEC.