Application

Status
Not open for further replies.
Correct, you would not.
Depending on the application, you might need a bonding jumper (for example, service conduits)
 
BTW would you use a meyers hub on a box without a knockout but a threaded hub?
How would you get a good seal inserting the threaded end of RGS into a threaded hub on a box? Thanks.
 
horsegoer said:
BTW would you use a meyers hub on a box without a knockout but a threaded hub?
How would you get a good seal inserting the threaded end of RGS into a threaded hub on a box? Thanks.
Click to expand...
You get the same seal you get between the RGS and the myers hub. The myers hub is for non threaded openings in enclosures and has gasket between the shoulder of the fitting and the enclosure wall. Otherwise the rest is same either way threads meshing together is the seal for that portion of the install.
 
As others have stated here you don’t need to install another locknut. It probably would be problematic to do that actually.

By the way those hubs are only made for rigid metal conduit. They are not made to have male adapters of PVC screwed into them. If you need to use that with PVC you should install a short RMC nipple and then screw a PVC female adapter into that. Not only would this be the listed means, but it makes practical sense too. RMC has a tapered thread and so putting the RMC into that fitting makes it seal a way that screwing a male adapter for PVC (which doesn’t have a tapered thread) won’t.
 
If you had outdoor 4" hubbed box running RGS conduit would you use the meyers hub then?

I would think just spinning the RGS into a threaded hub would not create a good seal outdoors to prevent any water etc.
 
augie47 said:
No.
A "Myers" hub is simply another type of hub and can be used in lieu of a factory hub.
Click to expand...

You mean you use a Myers hub when there is NO threaded hub as mentioned above?
So what would you use to create a weatherproof/water tight seal when terminating RGS in an outdoor 4" hubbed box?
 
So in what instance(or type of box), that you could think of, would you use the hub I posted outdoors and when connecting RGS to a box?
 
horsegoer said:
So in what instance(or type of box), that you could think of, would you use the hub I posted outdoors and when connecting RGS to a box?
Click to expand...
If you had a screw covered box and have to enter the RMC into a hole you drilled. You cannot use regular locknuts so you would use something like a Myers hub or sealing locknuts to attach the RMC to the box. If the box already has a threaded hub (not applicable for the box shown) you would just screw the RMC into the hub.
AB864GSBG-open.jpg
 
infinity said:
If you had a screw covered box and have to enter the RMC into a hole you drilled. You cannot use regular locknuts so you would use something like a Myers hub or sealing locknuts to attach the RMC to the box. If the box already has a threaded hub (not applicable for the box shown) you would just screw the RMC into the hub.
AB864GSBG-open.jpg
Click to expand...
But wouldn’t the knockout you drill be the same as a concentric knockout? Why would you use locknuts in that situation?

what about a Myrs hub on a 4” box with a knockout(no hub) outdoors? Could/would you do that?
 
horsegoer said:
But wouldn’t the knockout you drill be the same as a concentric knockout? Why would you use locknuts in that situation?

what about a Myrs hub on a 4” box with a knockout(no hub) outdoors? Could/would you do that?
Click to expand...
No, a concentric KO's and a drilled hole are not the same thing. A concentric KO is a group of different size rings that allow you to remove only the ones required for you size raceway. For example it might be in the range of 1/2-1.25". If you removed all of the rings then the KO and the drilled hole are the same.

Your post #17 is asking about outdoors so in a wet location you cannot use a 4" square 1900 box. The use of a Myers hub is in wet locations when entering a box that does not have a hub like in post #18.
 
Status
Not open for further replies.
Top