Electrical Question's, re: sizing |
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Electrical Question's, re: sizing |
76-914 |
Sep 20 2013, 05:43 PM
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#1
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,611 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Does anyone have a table that shows the amp limits and permissible lengths for various wire sizes? What is std practice for sizing fuses? Is the fuse sized by wire limits or demand? Does a soldered connection add to resistance? (IMG:style_emoticons/default/confused24.gif)
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Tom |
Sep 20 2013, 09:02 PM
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#2
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
Kent,
That is a good wire table Dave posted. As for fuses, they are somewhat different depending on the manufacturer. ATC type fuses like I used in my fuse blocks are as follows; 125% of the rated amps continuously, 140% for .5 sec, 300% for 0.1 sec. If I remember right, I had listed some of the most common loads for our cars and the fuse amperage necessary, you just have to search for that thread. For the stock Porsche/Vw fuses I don't know what they will allow and did not test any to see what they will allow before blowing. I also use "offroaders.com for some good info. Soldering should lessen the resistance of a crimped connection , and keep it lower for a longer period of time. Soldered connections are however somewhat affected by vibration and could cause cracks in the soldered connection if the connections are unsupported, ie: hanging loose and allowed to move around. Tom |
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