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Old 10-10-2011, 01:47 AM
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Quote:
Originally Posted by Billybob View Post

"I'd not chance burning down my car with a mended fuse"

You couldn't, the mended fuse can't flow a higher current that the original fuse! It is most likely that the solder used to mend the fuse would melt and open the circuit before the fuse's alloy did.

The best analogy would be if you took a 30A strip fuse and cut it in half at its center essentially creating two 30A fusible links and then used another conductor to electrically join them in series i. e. 30A fusible link/strip half - conductor - 30A fusible link/strip half. It would make no difference at all if the conductor you used to join the two 30A fusible link/strip halves was tin foil, solid gold, L6 tool steel or titanium. If the current flow exceeds the capacity of either 30 A fusible link section that will blow, at the same rating as a single complete fuse.

The only thing that could possibly happen is the rating of the modified fuse could be reduced if the conductor used to join the two 30A sections itself had a lower effective rating, i. e. tin foil, gum wrapper anything that might be thinner, lower melting point, or higher resistance than the original 30A fuse's alloy in its physical configuration.
+1

As long as you have a section of fuse unbridged by the solder joint then it is OK. A fuse can be long or very short, it does not really matter. I have made a fix like this before and forgot all about it. I used the blower as usual and nothing happened.

Put it this way. You cut the fuse into half and you install one half only by extending the connector on one side. Would it work? Of course it would.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

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