The telecom industry uses a lot of Sanchem NO-OX-ID "A Special" - costs a fraction of what Penetrox E does and doesn't leave copper schmeer all over the place. We keep a tube in every tool bag.
On Nov 30, 2010, at 12:53 , R Ray Walters wrote: > We use the same inner melt heat shrink, I think. You don't know you have a > problem, until you cut that pretty heat shrink off 5 years later, and see > what is happening underneath. > The reason we use the vaseline, is that it remains conductive, so we can > precoat the connectors before assembling and tightening. (Windy Dankoff > taught us that one) > I would see the 3M coating as something to spray on after, but I would be > concerned about using it on contact surfaces before. > I agree, heat can be an issue, so we use a high temp grease for applications > were the temp might get over 100 deg F. > Maybe a combination might work best: grease on the contact surfaces before, > and 3M spray outside after? > > R. Walters > r...@solarray.com > Solar Engineer > > > > > On Nov 30, 2010, at 9:47 AM, Warren Lauzon wrote: > >> We use the “inner melt” type of heat shrink and have had few problems with >> it compared to the standard heat shrink. As far as Lead plated lugs, I am >> not sure I see much advantage to them. Also as far as coatings go, most >> Vaseline and other standard grease type are way too temperature sensitive, >> and in hot weather they just melt away – and they are also great >> dust/bug/dirt gatherers. 3M and others make a spray on coating that hardens >> somewhat that we have found to be much better. From the 3M website “Scotch® >> Insulating Sprays 1601 and 1602 are electrical-grade, fast-drying enamel >> sealers and insulators in pressurized cans. These sealers protect surfaces >> against weather, moisture, corrosion, oil, alkalies and acids. The sprays >> can afford easy access to hard-to-reach spots. Use Insulating Spray sealers >> to spray over insulation on wire and cable splices, as a general-purpose >> sealer, or for touch-up insulation on motor windings and frames. Sprays are >> available in clear, red or black.” >> >> The local Home Depot carries it here, also some electrical distributors. >> >> >> From: R Ray Walters >> Sent: Tuesday, November 30, 2010 9:26 AM >> To: RE-wrenches >> Subject: Re: [RE-wrenches] Battery Cable REvistied >> >> HI Mark; >> >> Where do you get the lead plated lugs? We used to special order tin plated >> lugs from Del City, but they quit carrying them. >> I found that the grease or vaseline coating was the most important issue, >> though. Tin plated lugs would corrode just like the unplated ones, except >> they first would lose their plating. >> Lead plated lugs might just be the ticket, except you would still have to >> keep the corrosion from creeping up under the heat shrink to the copper >> cable. >> I've had cables with corrosion going up the cable strands for over 6" past >> the lug. And yes we use heat shrink with the sealing adhesive inside; the >> corrosion just travels right under it along the surface of the metal. I >> actually found electrical tape seals better, it just doesn't look near as >> good, so we still use heat shrink, and coat over the heat shrink with the >> vaseline (or grease). >> >> R. Walters >> r...@solarray.com >> Solar Engineer >> >> >> >> >> On Nov 30, 2010, at 9:09 AM, Mark Frye wrote: >> >>> I recently worked with a telecom specification that required lead plated >>> copper lugs on the battery side and I have been using the same on my own >>> systems for some time now. >>> >>> How important is it to use lead plated lugs on the battery side? Is tin >>> plated copper just as good so long as you coat well with grease etc.? >>> >>> Mark Frye >>> Berkeley Solar Electric Systems >>> 303 Redbud Way >>> Nevada City, CA 95959 >>> (530) 401-8024 >>> www.berkeleysolar.com >>> >>> >>> From: re-wrenches-boun...@lists.re-wrenches.org >>> [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Glenn Burt >>> Sent: Monday, November 29, 2010 6:03 PM >>> To: 'RE-wrenches' >>> Subject: Re: [RE-wrenches] Battery Cable REvistied >>> >>> Hi Ray, >>> >>> I have for my last 2 battery jobs used the Cobra X-Flex in 2/0 size with >>> MTW rating. >>> >>> At the battery end I have found the Thomas & Betts 54163-TB lugs, available >>> at my local Grainger store to be a good match both mechanically and >>> specification wise (also the correct hole size for M8 terminals in my >>> Concorde AGM’s). >>> On the usual electrical equipment end, I use a Greaves Shoo-Pin PT131FX20 >>> as the appropriate reducer to a THHN stranding #2/0 size (available through >>> our local Graybar store, drop shipped to my office). Because I am using a >>> Sunny Island, of course nothing #2 fits… so I have two Polaris style >>> connectors in the trough below the SI where I switch from the Shoo-Pins to >>> four #1 THHN to go up into the SI batt terminals (two conductors per pole). >>> >>> In fact, I am wrapping up one of these installs right now. >>> >>> Don’t know if this helps, >>> >>> -Glenn >>> _______________________________________________ >>> List sponsored by Home Power magazine >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Options & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out participant bios: >>> www.members.re-wrenches.org >>> >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> >> Northern Arizona Wind & Sun - Electricity from the sun since 1979 >> -------------------------------------------------------------------- >> Online Solar Store >> Free Solar Discussion Forum >> -------------------------------------------------------------------- >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Options & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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