how not to connect to a fused circuit

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KarTuneMan

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Posted: May 16, 2007 at 5:24 PM / IP Logged

KPierson wrote:

I guess I'm just used to going to the ignition wires and adding actual fuse holders, or tapping in to an already fused OEM circuit (like the cigarette lighter).

I'm really surprised the connection holds up, solder isn't really designed to form a 'mechanical' connection like that.

???

KPierson

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Location: Ohio, United States

Posted: May 16, 2007 at 5:36 PM / IP Logged

Solder should be used to make electrical connections, not mechanical connections. It has some strength, but not enough strength to use it in that fashion. This is why we twist wires together before soldering them. Wires soldered side by side have a fraction of the mechanical bond of wires twisted and soldered. The same thing applies to this situation here - soldering copper wire to a flat metal surface.

I recently repaired a Milwaukee 18V drill battery where the spot weld had busted. I couldn't spot weld it back on so I figured I would try soldering it before throwing the battery away. The solder joint lasted 2 days, as I was soldering a metal buss bar to a metal battery - ie no mechanical connection between the two.

Kevin Pierson

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how not to connect to a fused circuit

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