electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Oh ok, in article 300. That section in 344 I posted seems to conflict with that.
weathertight bulkhead options with LFMC fitting on one side, EMT (or multi-conductor cable) on the other side?
- Thread starter emiller233
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician
So let the guy weld in a plumbing coupling then run a RMC running thread through it so the plumbing coupling is now just a threaded sleeve. Problem solved.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Nice!
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Questions for the OP:
If the inside was no object, what fitting or other part would ideally be on the outside?
And:
If the outside was no object, what fitting or other part would ideally be on the inside?
Must either one or both either have or not have a removable cover? Are splices required?
I'm trying to envision what is the problem with simply sandwiching the container between the two.
If the inside was no object, what fitting or other part would ideally be on the outside?
And:
If the outside was no object, what fitting or other part would ideally be on the inside?
Must either one or both either have or not have a removable cover? Are splices required?
I'm trying to envision what is the problem with simply sandwiching the container between the two.
- Location
- Illinois
- Occupation
- retired electrician
What conduit fittings with female threads are suitable for use with straight threaded conduit?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
It doesn't need to be. It's just a threaded non-electrical sleeve welded in place. Sleeves are not under the purview of the NEC and can be made with any material.
- Location
- Illinois
- Occupation
- retired electrician
You said screw conduit running thread through the plumbers coupling...that would a conduit with straight threads. My question is what fitting with female threads is suitable for connecting to straight threaded conduit?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
A running thread should work even with a tapered coupling unless the thread patterns on each side of the coupling didn't match, then some type of straight thread coupling would be required. I know I initially said plumbing coupling which most would assume to be a tapered thread. I should have said any straight thread coupling besides an electrical one.
gadfly56
Senior Member
- Location
- New Jersey
- Occupation
- Professional Engineer, Fire & Life Safety
Why would they need to be listed? You're using them to penetrate a structure; at the penetration you could use almost anything. And good luck finding electrical fittings that will be accepted as listed in every single country. It's hard enough finding fittings listed for the US and EU, let alone everywhere else.
- Location
- Illinois
- Occupation
- retired electrician
As far as I know there are no electrical fittings that have female threads that have been evaluated for use with straight male threads.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I'm thinking of any non electric straight threaded coupling which would merely be a sleeve for a RMC running thread. The coupling (sleeve) would have no affect or bearing on the electrical installation so it could be welded, epoxied, glued, etc in place.
wwhitney
Senior Member
- Location
- Berkeley, CA
- Occupation
- Retired
I think Don's question is how do you make a raceway connection to each end of your RMC running thread, if the whole thing is straight threaded?
Cheers, Wayne
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Ah that's makes sense.
wwhitney
Senior Member
- Location
- Berkeley, CA
- Occupation
- Retired
As to the OP, apparently there's something called a uniseal fitting, which is a sort of sealing rubber grommet. So you can drill a specified size hole through the metal container, install the uniseal fitting, and then just push through any cylindrical penetration of the matching OD. Not sure if they are made in EMT sizes, but they are made in Schedule 40 sizes.
Cheers, Wayne
Cheers, Wayne
letgomywago
Senior Member
- Location
- Washington state and Oregon coast
- Occupation
- residential electrician
South wire SimPush rigid fittings are and they are Rain tight as well.
Attachments
- Location
- Illinois
- Occupation
- retired electrician
have never seen that, but I would never even think of permitting a push on conduit connection one of my jobs
letgomywago
Senior Member
- Location
- Washington state and Oregon coast
- Occupation
- residential electrician
They're listed they exist are listed for equipment grounding and that's what the reply was for since the bickering back and forth about a silly bulkhead.
I agree that welding couplings isn't allowed but I can also see someone making a listed coupling that doubles as support. It would need to be in the manufactures instructions.
In the end there's better ways to do this whole install without misusing materials.
Use a fromtoo emt to rigid nipple in the bulkhead and a rigid ripple from bulkhead with from too for rmc to flex.
I think people are picking some stupid anthills to stand on in this discussion too BTW.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Ok so say you have Rob's running thread idea. I see several options from there:
1. But a box on the inside and the outside with locknuts. What could be wrong with that?
2. What about a RGS coupling and a 90 degree flex/sealtight connector on that? IS that one of those silly academic things where we cant thread a connector into a coupling? I just did that today LOL.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
My first two posts were ignored, so I'll try one more time.
Why is this not as simple as, say, a pair of LBs with a close nipple between them, sandwiching the container wall and an O-ring or two?
Why is this not as simple as, say, a pair of LBs with a close nipple between them, sandwiching the container wall and an O-ring or two?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Yeah, or sealing locknuts, or silicone - or both......They seem to be wanting a Rube Goldberg solution
