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Fishy
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Post by Fishy »

.....unless its silver.

:p

-Fishy
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GlassWolf
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Post by GlassWolf »

higher strand count means more supple cable, and more wire surface area. win-win.

With alternating current (AC), electrons flow more at the outer surface of the wire rather than through the middle. The higher the frequency, the more the skin effect and the greater the resistance. Stranded wire produces less skin effect than solid, because there is more surface area.
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spkrman
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Post by spkrman »

KikiTheCat wrote:higher strand count means more supple cable, and more wire surface area. win-win.

With alternating current (AC), electrons flow more at the outer surface of the wire rather than through the middle. The higher the frequency, the more the skin effect and the greater the resistance. Stranded wire produces less skin effect than solid, because there is more surface area.
I will concede that higher strand count does make the wire more "supple" :) . Less chance of sticking yourself with a strand. I've worked with stinger cable and its like butta, but to save $$$ I'll stick with my "inferior" welding cable. But hell, for the $ saved on buying stinger I stepped it up to 2/0ga, and will probably go with *another* run of 2/0ga if I decide to run my battery under the hood again. STILL cheaper than stinger wire.

On that same note.. most of the car audio wire's insulation is so thick that it doesnt really matter how many strands the wire has, is no better than welding cable in most examples. The wire might be as soft as a baby's arse, but the insulation HAS to be fairly tough... there goes that.

HIgh frequency AC has nothing to do with 12 volt DC power wire... and this is where the marketing promotes skinning.

If I can remember correctly, skinning doesnt even happen in the audio bandwidth.
spkrman
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Post by spkrman »

Fishy wrote:.....unless its silver.

:p

-Fishy
Silver power wire... $10,000 a foot... INCREASED SOUND QUALITY BY 300%. Hell, I sell 20 feet a year and I'm livin pretty nice.

Also, if you promote so much "surface area"... how can anyone ever promote a body ground? Perhaps passing through welds increases power flow?

I've always been a proponent of running a wire for ground AND power - it *does* make a difference.
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Post by Ryan from Ohio »

Eh...

As long as your negative wire can support the current.

Remember. Power flows from the negative to the positive ;)
-Ryan
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spkrman
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Post by spkrman »

So how does a diode work....
Scarrell
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Post by Scarrell »

ive ran plently of Scosche stuff when hooking up friends' system... it works fine... it will do the same as any other product.. i guess there is a quality difference but i dont think its totally noticeable... although you can get the Knu Konceptz 8 gauge kit for $18 i think it was, after shipping for me it was almost the same as the Scosche stuff... KK was a dollar more maybe..
Fishy
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Post by Fishy »

I bet if you took a cross section of your chassis the total area would far exceed that of 2/0 cable. The current doesn't just make a beeline from your ground to your alternator's housing. It follows the path of least resistance which means using the WHOLE chassis between those two points.


As far as welds go the resistance in a narrow piece of wire for example, also depends on length. If that weld is short no big deal. Current doesn't flow like water through a narrow opening in a pipe. If that were the case all of our fuses would be gigantic.

-Fishy
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Post by spkrman »

Fishy wrote:I bet if you took a cross section of your chassis the total area would far exceed that of 2/0 cable. The current doesn't just make a beeline from your ground to your alternator's housing. It follows the path of least resistance which means using the WHOLE chassis between those two points.


As far as welds go the resistance in a narrow piece of wire for example, also depends on length. If that weld is short no big deal. Current doesn't flow like water through a narrow opening in a pipe. If that were the case all of our fuses would be gigantic.

-Fishy
try to pull 300 amps through your frame/body.

pull 300 amps through that wire

If the path of least resistance is all around the car, that increases path length at the same time.

The idea of pulling 300-400 amps through a weld just doesnt appeal to me... not to mention you really can't say for sure what the path of least resistance will be.

I actually performed a sort of a "test" where I used my old frame ground with upgraded ground up front with just my rear battery to start the car. It was *much* harder to start than with just the 2/0ga wire up front for ground.

The best way was with both connected :)
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GlassWolf
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Post by GlassWolf »

I wasn't debating welding wire. I was speaking in terms of stranded versus solid core.
I routed some 4ga from a marina once in a car.. it was heavy duty battery cable for speed boats. That stuff was so friggin hard to bend, I needed pliers to route it. I think it had a strand count of about 12. lol

I was defining snik effect because most people were probably unaware of what it is in the first place.

I've seen several folks use welding wire before without any trouble. I just use the stuff made for cars because I get it more easily in sizes and lengths I need.
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