I did a job just last week with a female threaded PVC adapter and screwed a polytuff connector into it. I do not glue it in case I need to take it apart. I've done this several times and never got called out on it.

I consider it the same as am EMT to flex fitting.

Sent from my Samsung using Tapatalk

 

The PVC JB is probably the only code compliant way to do it. You would use it as a pull box.

 

I've done male Carlon straight fitting into pvc female over a thousand times with never a violation in any jurisdiction I've done it.

Even a metal sealtite straight fitting into a pvc female adapter hassle free.

 

if somebody comes on here and says no listing, the threads don't match and therefore there is no bonding proper, I'm gonna throw my hammer at him..........

 

What kind of hammer?

 

Carlon says it's ok.

 

In Canada we can not thread a plastic male thread into anything, PVC or metal, they can only be used with a locknut. We can only thread metal male connectors.


This code is from the rigid PVC section, but many inspectors apply the same theory to all plastic connectors.

12-1112

2) Female threaded PVC adapters shall be used together with a metal conduit nipple to terminate at threaded conduit entries in metal enclosures.

 

I could never quite figure out that rule since it talks about enclosures.

 

We've always done an FA and then screwed a liquid tight connector in to it. Inspectors have seen it and none have said anything.

 

Kind of confused now. So is it code compliant to use a non metalic liquid tight threaded connector screwed into a pvc FA? I have used pvc TA many times into an aluminum rab box and have never failed inspection.

 

In the states, the proper way to accomplish this is to glue the carflex straight to a PVC coupling and bury it or put the tub skirt back on before the inspector catches you
:smile:
If it isn't legal in maple country to screw a Carflex connector into a PVC female adapter, then buy and install one of these. Pre manufactured listed assembly for exactly what you're going to build anyways.

https://www.lowes.com/pd/carlon-1-i...lon-1-in-two-hole-pipe-elbow-schedule-40-pvc-compatible-conduit-fitting/3127831

 

Pre manufactured listed assembly for exactly what you're going to build anyways.

https://www.lowes.com/pd/carlon-1-i...lon-1-in-two-hole-pipe-elbow-schedule-40-pvc-compatible-conduit-fitting/3127831

I have definitely done similar to this to transition from rigid PVC to some sort of flexible conduit; whether PVC or metal. If I go metal I need to bond the metal flex and connector with a grounding bushing, so that is why I try to use PVC when possible; as illustrated above.

Have never been called out on that. The rule is about screwing a PVC TA onto a metal threaded fitting such as a meter can hub. Technically I don't think you can screw a PVC TA into a Rab box either, you need to do a close nipple and an FA; looks totally ugly that is for sure.

Cheers
John

 

I will guarantee that this has something to do with frozen tundra. Maybe the metal expands and cracks the pvc once it's 175 degree's below zero. Or is that 175 millimeters below zero? You French people always confuse me with your funny numbers.........

 

Metal contracts when it gets cold not expand but yeah, probably has something to do with it.

 

The mynah birds wouldn't like it if it got that cold. What a noisy fuss we would have to put up with if it did.........

 

UL's product standard for fittings is what does not allow a connector with male threads to be threaded into a connector or coupling with female threads. The wording in UL product spec has been changed several times over the last year or 2 trying to make this issue more clear. The wording now says something along the lines of a connector with male threads may be used with female threads if the manufacturer identifies the connector for such use, it must be marked on the smallest unit container or on the fitting itself. I have not seen a fitting that meets that criteria.

That being said, I really do not see it as a real world issue even though it is a technical violation of 110.3(B). If it was metallic raceway and you were relying on the connection to keep the ground fault path I would most certainly call that since it hasn't been tested and I sure as hell am not going to court over something so silly. All non-metallic components though, I don't have an issue worst that will happen is water gets in, but since the interior of the exterior raceway in a wet location is also considered a wet location it is moot.

 

This thread is fairly old, but I happened on it while trying to figure out what code-compliant options exist for transitioning from LFNC (Liquidtight Flexible Non-metallic Conduit) which I have always referred to as NMLT (Non-Metallic Liquid Tight).
Found a FAQ from Carlon which addresses this question specifically ... here is the direct quote

"90% of the time when Carflex (LFNC) switches over from a LFNC to a PVC or Fiberglass conduit it will terminate into a junction box. LFNC Fittings has to be used with LFNC per the NEC. It is allowed to use a LFNC Fitting with a PVC Female Fitting. The PVC fitting would solvent cement to the PVC conduit and the LFNC fitting would screw into it."

So, according to Carlon you can screw a LFNC fitting into a female PVC adapter and away you go.