What size fusible link for alternator. I changed main wiring to 8 ga.
What size fusible link for alternator. Reference -- Package directions for a Cooperman/Bussmann fusible link. Oct 8, 2018 · For example, you can use a 10 gauge wire for 60 amps if the wire is 4 feet long (like an alternator charge wire), but if the device is 12 feet away in the back of your vehicle you really need a 4 gauge wire to compensate for voltage losses. The same wire size fusible link must be used when replacing a blown fusible link. What gauge is the wire going from the alternator to the battery? Jul 31, 2013 · C3 Tech/Performance - What size inline fuse for my new alternator? - My new 105 amp alternator cam today! (upgrading from 42 amp as written about in my previous post) Thanks to everyones help, Im going to run an additional 8 gauge wire from the alternator to the starter. Description The page describes how to diagnose and repair fusible links. Fusible links usually last longer, fuse holders have a tendency to get crud/corrosion in them and stop working, while a fusible link is pretty well sealed (If you install properly with heat A damaged fusible link will manifest observable signs, such as melted insulation, brittleness, discoloration, a melted wire coating, etc. What do you all run breakers or fuses also? Jul 9, 2003 · Today it fried the fusible link that was on the end of the wire going to the starter solenoid. This includes the output of the alternator, so if you happen to have a 55 - 60 amp alternator, and the battery is a little low, that fuse link will "see" as Jan 25, 2017 · Links are marked on the insulation with wire-gauge size because the heavy insulation makes the link appear to be a heavier gauge than it actually is. What is a Fusible Link? A fusible link is essentially a special type of electrical wire that acts as a sacrificial link in an automotive electrical system. com Sep 2, 2025 · We do not recommend the use of fusible links inside of the vehicle due to the nature of how they fail as this can be a fire hazard. Apr 14, 2005 · If I upgrade my alternator wire, should I replace it with the same size fusible link, a bigger fusible link, or a regular fuse? I don't feel comfortable wiring a unfused wire to the alternator since the factory felt it was necessary. Jul 9, 2003 · Fusible links are designed to burn out at a safe current that is below the capability of the wire they are tied in with. That's what I use on my 1980 Corvette and Superlite Coupe. Fusible links are designed to be more forgiving to surges Aug 1, 2010 · Use the fusible links or fuses to protect your otherwise unprotected wiring to the alternator, and the main feed to your fuse block like the factory used. Most newer cars alternator charge wires are protected with a blade style fuse. A 10 ga fusible link (the required size) will need to be special ordered. Dec 21, 2013 · A fuse link is vastly different from a fuse, in that it needs to be able to handle a large overload. Whether you’re a mechanic or a diy enthusiast, this guide will help you choose the appropriate size of the fusible link for your alternator. Oct 8, 2018 · Fusible links are normally 4 gauge numbers smaller than the wire protected. The thing is, unless you have done the "ammeter bypass" ALL the current used by the car goes through that link except for starter current. So, for 8 gauge wire, you would need 12 gauge fusible link. What should I use? Nov 2, 2014 · The fusible links are generally color-coded to indicate a specific amperage, but I don't know what they are off-hand. Look up "mega fuse". Aug 10, 2023 · My understanding of automotive power wiring is that main battery cables are not fusible link wires. Fusible links are the electrical system's last line of defense against electrical fires. A 10-gauge fusible link is commonly used in charging leads. constant current. Jun 11, 2023 · In this article, we’ll talk about the factors that determine the size of the fusible link and how to find the correct size for your vehicle. They distribute power to the main parts of the electrical system and carry loads far greater than any automotive fuse can handle. Jul 31, 2013 · The rule for fusible links is that the gauge should be 2 gauge sizes smaller than the wire it is protecting. Jun 4, 2017 · 1987 - 1996 F150 & Larger F-Series Trucks - Fusible Link to Alternator Wire - Hey everyone, Long story short, I reversed my battery cables and now I'm going through and trying to replace fusible links : ( I want to replace this 14 gauge fusible link that goes from the starter solenoid to the alternator, but I can't Jun 23, 2008 · The question I have is how large of a fuse/ breaker to use between my 3G (130A) alternator and battery (this is a direct link w/ 6 gauge welding cable). ~ 1996 TLC ~ Factory Locked ~ ~ OME 850J Front / 863 Rear ~ 315 BFG KO2 ~ 14 Gauge Fusible Link - MadElectrical. . Virtually all vehicles with alternators use a length of specified wire Aug 10, 2023 · My understanding of automotive power wiring is that main battery cables are not fusible link wires. You may be confusing the one place where a fusible link wire is used; a separate battery red cable to the alternator. Last edited by KENS80V; Mar 1, 2014 at Feb 15, 2007 · I understand the concept of the fusable links, however Two 12 gauge wires cannot possibly handle the upgraded 160 amp alternator, which is why I replced the fusable links with a single 150 amp ANL fuse and 4 gauge wire. Virtually all vehicles with alternators use a length of specified wire A blown fusible link is identified by Diagnosis of a bad fusible link The fusible link between alternator and battery How to replace fusible links? Nissan fusible link Failure, main battery cable fuse Fusible link chart How do you size a fusible link? FAQs Alternator problems? Do a Fusible links test Conclusion Jun 4, 2014 · Fusible links are a separate type of conductor than standard wiring; when removing the link, you want to remove it completely rather than patching to a leftover length of an old link. How To Ensure A Healthy Connection Between Alternator And Battery? Start by physically inspecting the fusible link for damage. 20 gauge is too small. The information I gathered was the fuse protected the system when the following occurred: The electrical system draws its power directly from the alternator so that under normal operation the various circuits are protected by the fuses in line with Mar 1, 2014 · You will have a hard time finding a fusible link to protect a #6 ga wire. On that note, how do I determine what size fusible link to use, or what size fuse to use? Jul 31, 2023 · To replace a blown fusible link in your Jeep's alternator circuit: First, determine the correct amp rating for the original link. and put a 12 ga fusible link at the alternator and at the starter to protect both paths. com Catalog Dec 11, 2010 · On my Cummins, the alternator charge cable has a big phat 10g fuseable link at the end of the cable, just before the battery. I assume the fuseable link is May 13, 2013 · From the factory there is a fusible link between the battery and alternator to protect ALL of your electronics in case the alternator ****s up/grounds out and tries to send too much power to the battery. Apr 28, 2024 · About Auto Fusible Links: Did you know your car’s electrical components can run into power problems, resulting in damage and sometimes fires? Jul 26, 2013 · School 2 -- Choose a fusible link two number size difference between the Fusible Link and the gauge size. Fusible Links are sized 4 wire sizes up from the cable they are connected to. Good and damaged fusible links: Dec 22, 2010 · Before about 1980, there were no fusible links on alternators, but after that it is common practice to have a fusible link between the alternator and battery to prevent fires and wire burning up in the unlikely event that someone installs a battery with the polarity reversed or if a diode in the alternator fails. I am running 8 gauge wire from the alternator and then the fusible link on the end of it to the starter solenoid. See full list on sage-advices. Jul 10, 2023 · In this article, we will delve into what a fusible link is, its importance, how to diagnose issues, and when it's necessary to replace it. You can crimp the new link in place. A broken conductive element points to a damaged fusible link. Has anyone else seen other variances with Fusible link selection? . I changed main wiring to 8 ga. Everone has mentioned I should also install an Mar 23, 2016 · But wont doing this lower the amount of power the alternator can send to the battery ? Does this defeat the purpose of putting a larger cable on from the alternator to the battery ? Or should I get a 2AWG cable and then run a 6awg fusible link ? Last edited by candymancan on Tue Aug 25, 2020 6:44 am, edited 1 time in total. Jan 25, 2008 · On fusible links: I just put a 100 amp max, 63 nominal alternator in a 59 Vette I'm restoring. If you used a 12 gauge link with 12 gauge wire, there would be no buffer zone and the wire could possibly get too hot and ignite the casing or anything it is touching. Tomorrow I am going to replace the 8 gauge wire with 4 gauge and put a new fuse setup on the end of it. Oct 6, 2007 · 100 Amp Alternator Fuse Dear Howard, I had similar questions about fusing the system when i stepped my 40 Ford up to 140 Amp single wire unit. When replacing it, use a fusible link wire of the same gauge and length as the original. :MattMan555:. Calculating wire size requirements for circuits in a car is based on wire length, whether its part of a wire bundle or in free air and surge amperage vs. They're plain cables sized for the electrical system and can be replaced with larger gauge without issues. For example, a 10 gauge wire is protected by a 14 gauge fusible link. Typically the fusible link is crimped to the alternator feed with a barrel splice and then molded in a shell similar to what is shown in the picture. zfafm d1s5o2 4dlz zy 6blr gd4x 1galv ftzuss b2dvwr udhp5