It was my understanding that these compression lugs for DC connections are typically rated for fine stranded conductors. But I’m partial to ring terminals, so the pin adapter does sound like a good option as well.
On Wed, Aug 27, 2025 at 3:00 PM Maverick Brown via RE-wrenches < [email protected]> wrote: > For the six AWG and smaller I have a nice crimper that does a great job > making hex shaped crimps. > > For the 2/0 and 4/0 cables, I just slide the ferrule onto the conductors, > then insert the ferrule + conductors into the lug. And then tighten the set > screw to the specified torque. As a test, I have removed the cable to see > how the ferrule survived the set screw. The ferrule was not ripped and kept > the wires inside. The wires fit the backside of the lug and were > semicircular as proper and the set screw made a perfect spot for it to land > onto the ferrule. I usually double check the torque at the end of doing the > other wires to make sure the battery cables are secure. > > This method may not be scientific. I do have a battery cable crimper for > regular lugs, but it make a diamond shaped crimp that doesn’t seem as nice > as just using the set screw in the terminal. > > Thank you, > > Maverick > > Maverick Brown > Off-Grid Solar Commander since 2006 > Maverick Solar Enterprises, Inc. > • Solar Commander Remote Power > • SunFlow Systems Cathodic Protection > [email protected] > 512-460-9825 > > > > On Aug 27, 2025, at 9:41 AM, William Miller via RE-wrenches < > [email protected]> wrote: > > > > Friends: > > More inverters these days present lugs for battery connections instead of > studs. I bought some 2/0 and 4/0 ferrules to accommodate the fine stranded > MTW we use. I have a cheap hex crimper but the results are poor with a > sharp “wing” on either side of the crimp. > > What does the hive mind suggest for a ferrule and crimper for these larger > wire sizes? > > Thanks in advance. > > William Miller > Miller Solar.com > 805-438-5600 > www.millersolar.com > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[email protected]/ > 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 > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[email protected]/ > 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 > >
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