[RE-wrenches] myers hubs

[drake.chamberlin at redwoodalliance.org]

William

I don't know about using a Meyers hub with a PVC box. The construction of
the hub does not lend itself to grounding bushings.

Someone does (or did) make PVC boxes with female glue fitting on the top
and sides.  My suppliers have not been able to find them. My usual work
around is to use a plastic LB, coming from a pipe on the bottom of the
box.

Drake

>


 August:
>
> Thanks for the reply.  The use of the compression EMT connectors still
> requires a threaded hub to be considered rain-tight.  These do not solve
> the problem of how to connect PVC conduit to a plastic box, maintain
> rain-tight status and avoid introducing a metallic fitting that requires
> bonding.  I was hoping to learn about a new fitting to solve this problem.
>
> One of my wholesalers claims the use of a sealing locknut on a standard
> PVC
> male adapter is considered raintight.  I am skeptical.  Does anyone know
> if
> this assertion is backed with code language?
>
> William Miller
>
>
> At 11:14 AM 7/24/2009, you wrote:
>>Sorry, that first link was for a coupling. Here is a connector link:
>>
>><http://www.arlcatalog.com/EMT/EMT%20Rain%20Tight%20Compression%20Connectors%20with%20Insulated%20Throat.htm>http://www.arlcatalog.com/EMT/EMT%20Rain%20Tight%20Compression%20Connectors%20with%20Insulated%20Throat.htm
>>
>>-August
>>
>>
>>----------
>>From: re-wrenches-bounces at lists.re-wrenches.org
>>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of August
>> Goers
>>Sent: Friday, July 24, 2009 10:15 AM
>>To: 'RE-wrenches'
>>Subject: Re: [RE-wrenches] myers hubs
>>
>>William,
>>
>>See:
>><http://www.arlcatalog.com/EMT/EMT%20Rain%20Tight%20Compression%20Couplings.htm>http://www.arlcatalog.com/EMT/EMT%20Rain%20Tight%20Compression%20Couplings.htm
>>
>>These fittings are nice because the steel is tinted blue to help assure
>>that installers don't use non-listed fittings.
>>
>>When I referred to "wet-loc" I simply meant an EMT compression coupling
>>specifically labeled for use in wet locations. The particular connector I
>>have in front of me has "WET LOC" printed on it. San Francisco code
>>officials check to make sure that the fittings we use outdoors are listed
>>for use in wet locations.
>>
>>-August
>>
>>
>>----------
>>From: re-wrenches-bounces at lists.re-wrenches.org
>>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of William
>> Miller
>>Sent: Friday, July 24, 2009 9:20 AM
>>To: RE-wrenches
>>Subject: Re: [RE-wrenches] myers hubs
>>
>>August:
>>
>>I am familiar with the Myers hubs.  My question was referring to the
>>"wet-loc" connector you alluded to.  Who makes those?
>>
>>William Miller
>>
>>
>>
>>At 09:00 AM 7/24/2009, you wrote:
>>William,
>>
>>Here is a Thomas&Betts PN:
>>
>><http://www.tnb.com/ps/fulltilt/index.cgi?part=H050CP>http://www.tnb.com/ps/fulltilt/index.cgi?part=H050CP
>>
>>Page 15 (A-18) of this pdf explains the hub in detail:
>>
>><http://tnblnx3.tnb.com/emAlbum/albums/tc_us/tc_1_rigidoverspec.pdf>http://tnblnx3.tnb.com/emAlbum/albums//tc_us/tc_1_rigidoverspec.pdf
>>
>>-August
>>
>>
>>
>>August Goers
>>
>>Luminalt Energy Corporation
>>O:  415.564.7652
>>M:  415.559.1525
>>F:   650.244.9167
>><http://www.luminalt.com/>www.luminalt.com
>><mailto:august at luminalt.com>august at luminalt.com
>>
>>
>>----------
>>From: re-wrenches-bounces at lists.re-wrenches.org
>>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of William
>> Miller
>>Sent: Friday, July 24, 2009 8:42 AM
>>To: RE-wrenches
>>Subject: Re: [RE-wrenches] myers hubs
>>
>>August:
>>
>>Who manufactures these connectors?  Do you have a part number?
>>
>>Marco:
>>
>>Don't forget that if you do not have splices in an outdoor J box, and if
>>your wire is wet location rated, you are not required to use Nema 3R
>> boxes
>>and fittings.
>>
>>William Miller
>>
>>
>>
>>
>>
>>At 08:27 AM 7/24/2009, you wrote:
>>
>>Marco,
>>
>>Interesting question. May I ask why you want to use a Myers hub rather
>>than a standard wet-loc outdoor connector?
>>
>>My understanding is that Myers hubs are used for weatherproofing and
>>bonding (when used with a metal box) because the inside nut is serrated.
>>See NEC 250.92(B)(2) and 314.15(A).
>>
>>Anyone agree or disagree with me?
>>
>>-August
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