PVC to EMT

S

solarken

NABCEP PVIP
Location
Hudson, OH, USA
Occupation
Solar Design and Installation Professional
Any reason to not use a set screw adapter typically used for flex, to transition from PVC to EMT? It fits fine, would be secure, and no bonding needed, I have EGC inside, and the EMT is bonded on the far end.
 

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Like Hal said they make the proper fittings to transition from one to the other. Although the fitting in the photo may work that isn't it.
 
don_resqcapt19 said:
Note both of these ideas are not acceptable to some AHJs as the male threads of the connector have not been evaluated for use with female threads.
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Do you mean the threads have not been evaluated for mechanical connectivity as opposed to electrical/ground continuity or is watertightness the issue?
But if listed materials are not required isn't it up to the AHJ.
 
herding_cats said:
Would require a grounding bushing when terminated, depending. Use the flow chart for grounding bushings.
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The EMT would be bonded by a proper EMT fitting at the other end if terminated at a bonded enclosure and would only need a bonding bushing if the general rules for needing additional bonding methods call for it. The PVC would never need a bonding bushing.
 
jim dungar said:
Do you mean the threads have not been evaluated for mechanical connectivity as opposed to electrical/ground continuity or is watertightness the issue?
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The simply have not been evaluated for any use with a fitting having female threads. The have only been evaluated for use with locknuts.
curt swartz said:
That looks like its for ENT not PVC.
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The page specifically said Schedule 40 or Schedule 80 PVC.
 
don_resqcapt19 said:
The simply have not been evaluated for any use with a fitting having female threads. The have only been evaluated for use with locknuts.
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I didn't know a strictly mechanical connection need to be evaluated.
I know there are new restrictions to have Listed staples and other support methods, but I didn't think they included the threads on nuts and bolts.
 
jim dungar said:
But if listed materials are not required isn't it up to the AHJ.
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90.4(B) and 110.2. It's always up to the AHJ ;).

If the fitting is secure and everything is effectively bonded, I, as an inspector, don't get too wound up about these things. But that is just how I roll, not how other inspectors are or should be.
 
hbiss said:
Because it's made for flex. Use a male threaded PVC adapter glued on>threaded coupling>EMT connector.

-Hal
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Is a male PVC adapter listed for connection to a threaded steel coupler? And is an EMT connector listed for connection to a threaded coupler?
 
NEC Inspector said:
90.4(B) and 110.2. It's always up to the AHJ ;).

If the fitting is secure and everything is effectively bonded, I, as an inspector, don't get too wound up about these things. But that is just how I roll, not how other inspectors are or should be.
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So I didn't put this in the OP, but I need to transition from PVC to metal raceway in a solar PV DC circuit where Art 690 requires metal raceway when run inside buildings. So trying to transition as soon as the PVC comes through the drywall, so there is little to no PVC visible. The flex to emt coupler achieves that and fits like a glove.
 
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