The problem is that wire nuts are not intrinsically sound, a good connection depends on the skill of the craftsman. They are not legal under the British electrical code, where I did my training, wires need to be firmly held under a screw as in a terminal. The US would be better to get rid of these nasty devices. In Britain, you see these terminal strips used. As long as they stay dry, they last forever. http://my.rs-online.com/largeimages/R4649744-01.jpg
On Tue, Sep 6, 2016 at 3:19 PM, MDElectricSolar . <[email protected] > wrote: > Yes, wire nuts, and loose connections are a big issue in AC circuits as > well. One of my most frequent troubleshooting calls is tracing out > loose/burnt/arcing connections behind receptacles and switches. Usually > caused by sloppy workmanship, or contractors being in a hurry. > Mike > > On Tue, Sep 6, 2016 at 12:14 PM, Glenn Burt <[email protected]> wrote: > >> Be aware that SMA explicitly prohibits the use of wire nuts in their >> installation instructions on the DC input circuits. >> ------------------------------ >> From: Jerry Shafer <[email protected]> >> Sent: 9/6/2016 14:32 >> To: [email protected] >> Subject: Re: [RE-wrenches] Wire nuts >> >> Wrenches >> Better pic >> >> On Sep 5, 2016 4:52 PM, "Jerry Shafer" <[email protected]> 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 >>> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> 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 >> [email protected]/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. > Office: 707-884-1862 > Cell: 707-684-0064 > *We prefer to have ALL documentation E-mailed ** prevent paper waste*** > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/[email protected]. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- Chris Mason NABCEP Certified Solar PV Installer™ Solar Design Engineer Generac Generators Industrial technician www.cometsolar.com <http://www.cometenergysystems.com> 264.235.5670 869.662.5670 Skype: netconcepts
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