I also concurr, NEVER use wire nuts on the roof, I've personally installed them, and come back 3-4 years later, and found them melted. Wire nuts are simply for insulating a splice, not to be counted on for the mechanical connection. I make my guys twist solid wire together before installing a wire nut. Solid to stranded is tougher, but can be done correctly. Mike
On Tue, Sep 6, 2016 at 12:01 PM, Benn Kilburn <b...@skyfireenergy.com> wrote: > The reason i'm asking is that the only time i have seen a short, > first-hand, in a wire nut, was because it appeared that one wire was pushed > down rather than binding with the other wire, which would have happened if > the wires were not held tightly when the nut was twisted on. Also, it was > a stranded wire (that was pushed down) being connected to a solid wire, > which is acceptable, but care must be taken to do it properly. > > Also, on all the Ideal wire nut packages I have, the instructions say to > twist the wire nut on until there are two visible twists in the wire. I > suppose this is to ensure the twist/connection is sufficient to make a > solid connection and perhaps to keep the wires together if the wire nut is > removed. > > The ones in this photo do not look like they were installed as per the > instructions, which brings how much attention was put in to installing them > in the first place. > > I've always questioned the why wire nuts are cautioned against, especially > considering how many wire nuts are used in residential and commercial > jobs. I'm sure if there was a legit issue with them then insurance > companies would insist they not be used, such as aluminum wiring? > > *Benn Kilburn * > CSA Certified Solar Photovoltaic Systems Electrician, SkyFire Energy Inc > 14515 – 121A Ave NW | Edmonton, AB | T5L 2T2 > P: 780-474-8992 | F: 888-405-5843 | www.skyfireenergy.com > [image: email] <b...@skyfireenergy.com> [image: facebook] > <https://www.facebook.com/SkyFireEnergy> [image: twitter] > <https://twitter.com/SkyFireEnergy> [image: linkedin] > <https://www.linkedin.com/company/283735?trk=tyah&trkInfo=tarId%3A1408655033432%2Ctas%3Askyfire%2Cidx%3A2-2-5> > > > [image: SkyFire Energy Logo_horizontal] > > *WE HAVE MOVED! Please note our new address above.* > > On Tue, Sep 6, 2016 at 12:47 PM, Jerry Shafer <jerrysgarag...@gmail.com> > wrote: > >> All the other nuts are tight so l cant not say it was or not but l see >> this alot and this was one that was caught just at the right time. >> Jerry >> >> On Sep 6, 2016 8:44 AM, "Benn Kilburn" <b...@skyfireenergy.com> wrote: >> >>> Jerry, >>> Can you confirm that this was caused by a failure of the wire nut, >>> itself, and not due to user error (not properly stripping enough jacket, >>> inserting even length wires and sufficiently twisting on the wire nut) >>> >>> Benn Kilburn >>> SkyFire Energy Inc. >>> 780-906-7807 >>> >>> On Sep 6, 2016, at 12:32 PM, Jerry Shafer <jerrysgarag...@gmail.com> >>> wrote: >>> >>> Wrenches >>> Better pic >>> >>> On Sep 5, 2016 4:52 PM, "Jerry Shafer" <jerrysgarag...@gmail.com> wrote: >>> >>>> To my fellow wrenches >>>> It comes up every so often and with DC, I will not use, approve or pass >>>> any wire nuts on any DC side. Some say its OK but the facts are they will >>>> fail, this connection was just six years and when l opened the junction box >>>> it was glowing and by the looks of it has for some time. There are 8 >>>> strings 2 per string and thats a 12.5 % failure rate (the other one was >>>> completely distroyed) not to mention the fire hazard in a PVC junction box. >>>> Please pass this along and tell everyone to stop using these. >>>> Jerry >>>> >>> <2016-09-06 08.29.40.jpg> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> 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 >>> >>> List-Archive: http://www.mail-archive.com/re >>> -wrenc...@lists.re-wrenches.org/maillist.html >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> 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 >>> >>> List-Archive: http://www.mail-archive.com/re >>> -wrenc...@lists.re-wrenches.org/maillist.html >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> >>> >>> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> 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 >> >> List-Archive: http://www.mail-archive.com/re >> -wrenc...@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > > _______________________________________________ > List sponsored by Redwood Alliance > > 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 > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- Michael & Jessica Nelson MD Electric & Solar Inc. 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