[RE-wrenches] Question re fine stranded cable with Sunny Island inverters

[Glenn Burt]

We used to use ferrules on smaller conductors. Both insulated and
uninsulated are available. A quick search came up with this source:

 

http://www.ferrulesdirect.com/Merchant2/merchant.mvc?Screen=CTGY
<http://www.ferrulesdirect.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code
=FD&Category_Code=UNFERR> &Store_Code=FD&Category_Code=UNFERR

 

can't say I've used the larger sizes and you might be in the hole even more
after acquiring the correct crimping tool.

 

-Glenn

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan
Sindelar
Sent: Friday, March 15, 2013 6:58 PM
To: RE-wrenches
Subject: [RE-wrenches] Question re fine stranded cable with Sunny Island
inverters

 

Wrenches,
A small issue, drawing on the collective wisdom here:



For an upcoming quad-stack installation of Sunny Island inverters, I
foolishly ordered some fine stranded copper 1/0 Cobra X-Flex Cable because
of its flexibility. In this situation, because of NEC ampacity requirements
on our total DC cabling (this system also has a single Radian for some
dedicated loads) we are only running 125 amp DC breakers on each SI
inverter.  

Our issue is that the SI installation manual specifically notes not to use
fine stranded cable into the terminal lugs. This was news to me. We can
purchase 1/0 Ilsco or Panduit copper pigtail adapters to make the connection
into the terminals of the inverters, but they are $10 to $14 each, and we
need eight of them.

Is using doubled up #4 or #2 the only solution? Are there any other
suggestions that will allow us to use the 1/0 X-Flex?

Thank you,
Allan   
- 

Allan Sindelar
 <mailto:Allan at positiveenergysolar.com> Allan at positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com <http://www.positiveenergysolar.com/>  

 

 

 

 

 

 

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