Carflex revisited [RE-wrenches]

Thu May 24 12:35:52 PDT 2001

Bobo,  (the name of a parrot some friends of my parents had when I was a
kid)

The carlock system sound pretty neat.  All that great info and you forgot
the most important thing.  The price?  I bet gold is cheaper per lb and
easier to buy than this carlock stuff.  We have hooked up some 3 phase CNC
mill's from Japan that are covered in something like this carlock.  All the
writing on it is in Japanese (I assume).  It must be pretty awesome stuff as
it moves with the cutting head thousands of cycles a day and is soaked in
cutting oil all the time.  The CNC mills we hooked up were used and who
knows how old and this stuff still looked pretty good.

Travis Creswell

----- Original Message -----
From: "Bill Brooks" <billbrooks7 at earthlink.net>
To: <RE-wrenches at topica.com>
Sent: Thursday, May 24, 2001 12:59 PM
Subject: RE: Carflex revisited [RE-wrenches]

> Bob-O,
>
> Sorry for not getting back to you sooner. I have been busier than a.... I
> guess that makes me a parrot of BS from "some pedantic, busy-body,
> non-wrench" ;-). I know you're expressing yourself out of frustration. I
> have been in contact representatives of Carlon and Electri-Flex and it
> appears that the previous rating of 105C dry and 80C wet has been backed
off
> to 105C dry and 60C wet. Having held the previous product in my hand, I
> absolutely know that it was not a myth. Some products get pulled from the
> market for a variety of reasons (Qest tubing for example) and other
products
> change their rating.
>
> The real problem is that the PV manufacturing industry is not supporting
the
> installing community with properly rated equipment. If you want to use 60C
> Wet-rated flex conduit, go right ahead. Most inspectors will not give you
a
> bit of trouble for it. However, a real stickler can screw you on it.
>
> The issue in my mind is not so much whether it can handle the heat, but
will
> someone question it somewhere down the road and cause problems. If we had
it
> properly rated, there would no question and no problem. That goes for
every
> wiring method including Tray Cable (the way I personally prefer to
install)
> except for USE-2. It appears that USE-2 is the only fully acceptable code
> method of intermodule wiring and it still requires proper support (an item
> open to a lot of subjective review).
>
> I have seen several cases of flex conduit causing junction boxes to pop
off
> the back of PV modules creating a huge hazard. I have also seen the
> blue-flex crap pull out of junction boxes and abraid wire causing equally
> dangerous hazardards. I've only seen flex conduit pulling out of
connectors
> on a few occasions and it could have been temperature or poor
installation.
>
> Some module manufacturers are beginning to address this problem with
> UL-listed  system assemblies where the package includes all UL-recognized
> components designed to be installed according to the UL-reviewed
> installation manual. That doesn't help the wrench that want to design
their
> own custom system, but it does go a long way.
>
> We need the PV manufacturing industry to step up to the plate and address
> this. This is only one of a host of issues that can cause us grief as we
> gear up to install thousands of systems in California.
>
> If I find something, I'll be the first to let you know. For now, use USE-2
> or tray cable with THWN-2 or XLP-2 or XHHW-2, or whatever you can get
> through your local inspector in conduit.
>
> Below is a UL-recognized product that could do the job for us. I believe
> Solarex has used this or a similar product in their installations.
>
>
> Type CL-standard weight
> Standard weight. Provides the best mechanical strength and protection of
the
> Corrlok conduits.
>
>
> The Corrlok/KOPEX System:
> The Corrlok System offers designers and electricians many advantages over
> numerous other wiring products. It provides a very light weight,
> liquidtight, flexible raceway resistant to abrasion, sunlight, temperature
> extremes and many common chemicals. The specially formulated nylon
compounds
> are self extinguishing and release no halogens or corrosive gases in fire
> situations.
>
>
> Applications:
> Corrlok conduits are defined in the National Electrical Code
(ANSI/NFPA-70)
> under article 351-22 (3) for Liquidtight Flexible Nonmetallic Conduits.
It's
> design is also referred to as type C. The Corrlok System is well suited
for
> many electrical installations such as Industrial Control Equipment,
Machine
> Tools and Plastic Molding/Extrusion machinery. Also used for wiring
Printing
> Presses, Textile Machinery and Medical Equipment. The system also lends
> itself quite well to non-electrical applications such as protecting
> air-logic circuitry and Fiber Optics. The conduits can be extruded in
other
> colors to differentiate between Electrical circuits and Fiber Optics.
>  Because the materials used are non-toxic and self extinguishing, Corrlok
is
> a proven choice for situations where the potential for fire in confined,
> inhabited areas is a concern. Passenger rail vehicles are just one of the
> many such examples.
>
>
>
> Construction:
> Conduits of the Corrlok System are manufactured in a continuous
> extrusion/corrugation process which produces a flexible seamless tube with
> annular corrugations. The corrugations are what gives the conduit it's
> strong crush and impact resistance and excellent flexibility properties.
The
> internal corrugations are well rounded which facilitates easy wire
> insertion.
>
>
> Material:
> Halogen Free Nylon 6
>
>
> Working Temperature:
> -40C to 105C Intermitting to 150C
> Standard Color:
> Black. Other colors available upon request.
>  UL Recognized Component File #E192135 For Electrical Machine
Installations
> 600 V, 105C, Vertical Flame, Liquidtight, UV, and Impact Tested.
>
>
>
> Fitting Pull-Out:
> 150 lbs. (1/2" and larger). To be used only with KOPEX connectors of the
> Corrlok System.
>
>
> The Parrot
>
> > -----Original Message-----
> > From: Bob-O Schultze, Electron Connection
> > [mailto:econnect at snowcrest.net]
> > Sent: Thursday, May 24, 2001 8:03 AM
> > To: RE-wrenches at topica.com
> > Subject: Carflex revisited [RE-wrenches]
> >
> >
> > In the absence of ANY data to the contrary, I am still forced to
> > conclude the 80° Wet flexible non metallic conduit is a myth. I
> > really hate it when some pedantic, busy-body, non-wrench puts forth a
> > theory and real wrenches parrot the BS without experience or data. It
> > hurts everyone's credibility.
> > Bob-O
> > Bob-O Schultze, Electron Connection
> > PO Box 203, Hornbrook, CA 96044
> > 800.945.7587 or 530.475.3402
> > fax 530-475-3401
> > www.electronconnection.com
> >
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