I have been busted by inspectors for "modifying a UL device in a way
that is not permitted in its listing", or something like that. While
weep holes make all the sense in the world, and I have commonly seen
1/4" holes drilled in LBs for ground wires, etc; one out of ten AHJs
might not like it.
Ray Walters
Remote Solar
303 505-8760
On 4/29/21 9:43 AM, frenergy wrote:
Eric,
I like your idea of drilling the weepage holes as long as
they are not big enough to allow critters like wasps to make a home
inside the J-box. We will use aluminum tape on unused mounting holes
in the back of the box for the same reason. Lurkers welcome.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 4/28/2021 6:19 PM, erics...@vermontel.net wrote:
Wrenches,
I am normally a lurker on the List, but I would like to add a fact
observation and a personal preference to the topics raised by this
discussion.
First, THWN does have PVC as its primary insulation, but it is
sheathed in Nylon which is a polyamide plastic. Therefore the
compatibility with MC4 connectors should be polyamide being squeezed
by the restraining bushing in the MC4, not PVC.
I prefer Buchanan copper crimp connectors when splicing PV wire to
THWN-2 in a roof junction box. The bared wires should be lightly
doped with NO-OX-ID A-Special grease
https://www.sanchem.com/electrical-contact-lubricant.html
<https://www.sanchem.com/electrical-contact-lubricant.html> before
sleeving and crimping with the crimp sleeve to repel entry of
moisture and corrosive gasses into the wire joint. I consider the
crimped joint to be superior to any screw-clamped joint that would be
made in a Polaris style connector. I also drill weepage holes in the
bottom corner of the junction box to mitigate any collection of water.
Eric Stevens, Vermont Made Energy
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
