This friendly conversation brings up a good point and that is just because one manufactures crimper used with their crimp versus another manufacturers crimper used with their crimp. Versus one manufacturers crimper with another manufacturers crimp. There is no STANDARD that I am aware of. Has anybody ever done calibrated pull tests? Has the NEC done pull tests? When crimping OO & OOOO cable ring ends onto wire. I’m definitely not using an end that is manufactured by the same manufacturer as my crimper that I’ve had for 25 years. Is this a violation of the NEC? I do a manual pull test (tug) but I think that’s definitely subjective.
Sent from my iPad On Oct 5, 2026, at 1:41 PM, Glenn <[email protected]> wrote: If bringing attention to what should not be done by professional installers, and pointing out code non-compliance is considered to be not friendly, then so be it. I have inspected too many installations where adherence to manufacturers required installation instructions have been 'overlooked, ignored or we've alwys done it that way' were inadequate responses. If a manufacturer lists its required method of assembly and installation and you interpret it as being a suggestion, it is clearly a violation of the NEC article 110.3b. Everyone takes their own level of responsibility for adherence and ultimately their accountability for their actions, obviously. However blatently posting such choices does zero for the reputation of our industry and needs to be avoided. I stand by my previous post. -Glenn On Oct 5, 2026 15:09, William Bryce <[email protected]> wrote: Glenn, That was quite the "friendly" response (not so much)! If using my Amazon purchased tool made by Rennsteig that has the exact die crimp design and compression ever comes into question, I'll take that hit! The goal of 110.3(B) is to make sure things are done correctly, to the recommended MFG specifications. In this case, a positive crimp of the MC4 connector to avoid loose connection, heat, and fire. Not to support a company's monopoly of a tool and their bottom line. I'm pretty sure that not everyone on this forum uses the Staubli tool. On Mon, Oct 5, 2026 at 2:19 PM Glenn <[email protected]<mailto:[email protected]>> wrote: Why would you admit to violating NEC 110.3b here? That seems like a poor business decision. -Glenn On Oct 5, 2026 13:49, Zeke Yewdall <[email protected]<mailto:[email protected]>> wrote: I've always just made them up myself -- CED Greentech carries the real MC4 connectors and the wire. My crimper is the amazon one, not the official staubli one. Or PV-cables.com has all sorts of custom ones with custom ends of any sort. Zeke _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected]<mailto:[email protected]> Change listserver email address & settings: https://lists.re-wrenches.org/mailman/options/re-wrenches_lists.re-wrenches.org/ There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ https://lists.re-wrenches.org/pipermail/re-wrenches_lists.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 _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: https://lists.re-wrenches.org/mailman/options/re-wrenches_lists.re-wrenches.org/ There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ https://lists.re-wrenches.org/pipermail/re-wrenches_lists.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
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