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: 13,513 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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Dave_Darling |
Sep 20 2013, 08:06 PM
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#2
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
First hit on Google for "wire gauge current rating":
http://www.powerstream.com/Wire_Size.htm IIRC, the wires in our cars are smaller than that standard calls for. Fuses are there pretty much to protect the wiring. If something shorts, you don't want the wire acting as the fuse; it can catch fire if it does that. So the fuse blows and stops the current going through. Fuses are generally chosen for the maximum amount of current you expect to go through the circuit, plus some extra on top of that. (Often a lot of extra, in fact.) --DD |
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