Irreverable crimped connectors for grounding [RE-wrenches]

Damian de Caires damian at thesolarcenter.com
Wed Sep 6 19:02:57 PDT 2006


Hell I failed an inspection on this one thanks

-----Original Message-----
From: Chris Worcester [mailto:chris at solarwindworks.com] 
Sent: Wednesday, September 06, 2006 11:04 AM
To: RE-wrenches at topica.com
Subject: RE: Irreverable crimped connectors for grounding [RE-wrenches]


Hi Damian,

I just bought one of these tools yesterday for doing irreversible splices
with the Ilsco ULT-6-Z 2str copper line taps. The tool is made by Greenlee,
K425BG, and is not the same as my battery lug crimping tool. By the way I
got it at a local electrical supply house for $244. SMA brought this up in a
tech training so here we go.

Sincerely,

Chris Worcester 
NABCEP Certified PV Installer
USA Distributor of Proven Wind Turbines
Toll Free: 877-682-4503
Fax: 530-582-4603
www.solarwindworks.com
chris at solarwindworks.com
"Proven Energy Solutions"
-----Original Message-----
From: David Brearley [mailto:david at meridiansolar.com] 
Sent: Tuesday, September 05, 2006 7:22 AM
To: RE-wrenches at topica.com
Subject: RE: Irreverable crimped connectors for grounding [RE-wrenches]


Damian,

If you search for "C-Taps" you will find what you are looking for.  Here is
a sample:

http://www.specialized.net/ecommerce/shop/seriesmaster.asp?series_id=Copper+
C-Taps

The crimper tool is the same one used for large battery crimp lugs.

David Brearley
NABCEP Certified Solar PV System Installer (TM)
 
Meridian Energy Systems
2300 S. Lamar, Suite 107
Austin, TX 78704
512-448-0055 (ph)
512-448-0045 (fax)
www.meridiansolar.com

-----Original Message-----
From: Damian de Caires [mailto:damian at thesolarcenter.com] 
Sent: Tuesday, September 05, 2006 9:14 AM
To: RE-wrenches at topica.com
Subject: Irreverable crimped connectors for grounding [RE-wrenches]


Recently I got cited for failure to install a direct connection GEC to
the Ground electrode as per NEC 690.47-C  In the code it does require a
GEC unbroken from one inverter to ground rod, any additional inverters
can have a GEC pigtailed to this line but the crimp has to be
irreversible.  It is uncommon for a crimp capable of holding 2x #6 wires
being also irreversible.  In the code it defines irreversible crimps (in
250) as either a crimp that will break when removed or a welded bond.
My idea is to use a split nut and solder the threads so the bolt can not
be unscrewed.  Currently I have contacted Watson & Bates for a part.  If
anyone can recommend a crimp let me know.


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