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#21
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![]() what an absurd response! For the willing: solid wire is intended for Ac because the current travels thru the average of the thicknessas it alternates polarity. Dc travels on the outside (skin effect) due to mutual repulsion of the electrons; therefore stranded wire is best for high current loads of Dc. If the wire is well supported and larger than necessary for the rated current AND cheap enough vs stranded, then go with it. Otherwise, stranded. rick On Thu, 27 May 2004 03:05:29 GMT, Lew Hodgett wrote: Subject If you have to ask that question, don't even consider the job. Boats are wired with tinned stranded wire based on some solid engineering. -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
#22
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One argument against soldered connections is that the molten solder can wick
up into the stranded wire and stiffen the wire back to a hard spot which, being concealed by the insulation, can fatigue without being seen. QLW wrote: I usually solder connector on my boat and have never found this to fail. I've never see this done but the manufacturers so there must be some negative reason but I've not found it. |
#23
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I usually solder connector on my boat and have never found this to fail.
I've never see this done but the manufacturers so there must be some negative reason but I've not found it. solder connections fail under high load conditions |
#24
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I agree. The crimp is for a solid mechanical connection. The solder
gives a good electrical connection and resists corrosion. wrong. solder connections fail under high load conditions. CRIMP for current, solder for corrosion resistence. In that order. |
#25
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bull****. you are an absolute amateur who probably teaches home ec class to
high school sophomores. what an absurd response! For the willing: solid wire is intended for Ac because the current travels thru the average of the thicknessas it alternates polarity. Dc travels on the outside (skin effect) due to mutual repulsion of the electrons; therefore stranded wire is best for high current loads of Dc. If the wire is well supported and larger than necessary for the rated current AND cheap enough vs stranded, then go with it. Otherwise, stranded. rick On Thu, 27 May 2004 03:05:29 GMT, Lew Hodgett wrote: Subject If you have to ask that question, don't even consider the job. Boats are wired with tinned stranded wire based on some solid engineering. -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
#26
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Would you mind explaining exactly how a solder connection fails "under high
load conditions" If a wire gets hot enough to melt solder then that circuit is greatly overloaded and the fuse should have failed long before reaching that point. "JAXAshby" wrote in message ... I agree. The crimp is for a solid mechanical connection. The solder gives a good electrical connection and resists corrosion. wrong. solder connections fail under high load conditions. CRIMP for current, solder for corrosion resistence. In that order. |
#28
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Would you mind explaining exactly how a solder connection fails "under high
load conditions" when the connection is soldered it lacks mechanical integrity. solder is soft and any chance of movement -- any, even walking on a floor near the equipment in a building -- loosens the connection until it eventualy fails. Even if after soldering the connection is clamped TIGHTLY with a mechanical clamp it eventually fails. If the connection is FIRST clamped TIGHTLY mechanically and _then_ soldered for corrosion protection all if right and holy. |
#29
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1) Skin effect is of concern - but only at frequencies well above
those used for power transmission. Start thinking about it at perhaps 5 MHz up. Skin effect is actually absent at DC [in response to another well-intentioned post from someone else...] 2) an equal diameter of stranded and solid power line passing equal currents, shows the stranded line getting hotter, with more volt drop, because the resistance per unit length is higher for stranded. Please don't share knowledge with us, willing or not, unless you're sure. There's always someone to spot a misconception. Brian W On Thu, 27 May 2004 22:29:52 -0300, none wrote: what an absurd response! For the willing: solid wire is intended for Ac because the current travels thru the average of the thicknessas it alternates polarity. Dc travels on the outside (skin effect) due to mutual repulsion of the electrons; therefore stranded wire is best for high current loads of Dc. If the wire is well supported and larger than necessary for the rated current AND cheap enough vs stranded, then go with it. Otherwise, stranded. rick On Thu, 27 May 2004 03:05:29 GMT, Lew Hodgett wrote: Subject If you have to ask that question, don't even consider the job. Boats are wired with tinned stranded wire based on some solid engineering. |
#30
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http://www.jamestowndistributors.com has pretty good prices on tinned marine
wire. It's not Ancor brand, but the same spec. Also, our local Home Depot acutally carries a decent selection of marine stuff, including wire, nylon terminals, etc. Oh yea, while on the subject of terminals, be sure to use a good double crimp ratcheting crimper and good terminals. You can find both at http://www.terminaltown.com. They have all kinds of wiring stuff, including mil spec connectors if you're really picky! -- Keith __ It's only unethical if you get caught. "dbraun" wrote in message lkaboutboats.com... All the reasons given here for the use of stranded wire are for the most part correct and reason enough to use tinned stranded wire. I am sure that the only reason you are disuaded from using real marine wire is cost, but I just bought 1000' of 14/2 for 24 cents a foot he http://www.blackav.com/bai.php?page=11 their website was out of commission last I checked, but their phone number is 724-379-8628 To answer all the sceptics, YES, this is tinned, stranded, duplex UL1426 CG approved marine wire. David S/V Nausicaa |
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