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| Wire keeps coming out of crimp connectors. |
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| Ed_McCarron:
--- Quote from: somunny on February 24, 2008, 04:28:47 pm --- --- Quote from: MaximRecoil on February 23, 2008, 06:44:31 pm --- --- End quote --- It probably won't make a difference, but it looks like he crimped the lugs with the wrong crimper. Correct me if I'm wrong but I don't think you're supposed to use a cleat on an insulated connector. It can damage the insulation. --- End quote --- Correct. The crimp tool I use in the field has two nests; one for insulated, and one for non-insulated. The insulated nest forms the crimp without breaking the insulation sleeve. That said, we (electricians) all use the pinching nest - even on insulated connectors because it seems to work better if the insulation isn't critical. The one I use in the shop has a ratchet setup and makes a formed crimp - looks much neater, but was bloody expensive. Either way, a properly done crimp is gastight - oxidation internally won't be a problem. The key is properly done. Correct lug size, correct # of conductors, correct prep. Theres still a good bit of wiggle room. |
| MaximRecoil:
--- Quote from: Ed_McCarron on February 28, 2008, 10:07:27 am ---Correct. The crimp tool I use in the field has two nests; one for insulated, and one for non-insulated. The insulated nest forms the crimp without breaking the insulation sleeve. That said, we (electricians) all use the pinching nest - even on insulated connectors because it seems to work better if the insulation isn't critical. --- End quote --- That's the type of crimp I use for insulated connectors as well, and I've done so ever since I noticed the installers at a car audio place using that type of crimp. It creates a much tighter crimp than the typical football-shaped crimps on the ends of cheap crimpers. --- Quote ---The one I use in the shop has a ratchet setup and makes a formed crimp - looks much neater, but was bloody expensive. --- End quote --- I wonder if that's like the crimps that Level42 (I think?) makes. I've seen pictures but I don't know where to find them right now; but they look very professional. |
| Ed_McCarron:
--- Quote from: MaximRecoil on February 28, 2008, 10:39:39 am ---I wonder if that's like the crimps that Level42 (I think?) makes. I seen pictures but I don't know where to find them right now; but they look very professional. --- End quote --- Heres the one I have... http://www.electriciansupplies.com/index.cfm/S/312/N/11537/P/83105/Thomas_&_Betts_WT145A_--_1_each.htm |
| fixedpigs:
--- Quote from: MaximRecoil on February 26, 2008, 11:47:12 am ---Oxidation occurs on the surface, which can degrade a surface-to-surface contact connection. --- End quote --- you know that electricity only travels on the surface of the wire right...and not through it...? |
| Ed_McCarron:
--- Quote from: fixedpigs on February 28, 2008, 10:50:16 am --- --- Quote from: MaximRecoil on February 26, 2008, 11:47:12 am ---Oxidation occurs on the surface, which can degrade a surface-to-surface contact connection. --- End quote --- you know that electricity only travels on the surface of the wire right...and not through it...? --- End quote --- Skin effect only applies to higher frequencies. At DC, we use the whole wire, IIRC. |
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