![]() ![]() These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. You can use this value in the fuse size chart above to determine the minimum wire size required. Add the values and divide by 1000 to get your total current in Amps. How do I determine the size of a fuse wire?įind the items that you’re installing and their current requirements. The cable run from the battery is approximately 15 feet. I am installing a 20 amp max marine waterproof 12VDC socket above my rear bumper for accessories such as a tire inflator (15 amps). What size fuse do I need for a 12 volt battery?Īssuming you’re powering it with 12V, you should use a 35A fuse. Watts ÷ volts x 1.2 = fuse size in amps required as a general rule. Or 12.5 amps, so I wouldn’t use over a 15 amp fuse. How can we improve our product information? What size fuse do I need for a 150 watt motor?Īmperage is determined by W/V, so if the wattage is 150 and you are running it on 12 volts, it is 150/12. This fuse is designed for use in a multitude of applications and features brass end caps. 75 Amp Glass Tube Fuse provides fast-acting, low-breaking capacity response. READ: What is the difference between altimeter and vertical speed indicator? Rather than risk blowing the circuit, take the car to a repair shop to determine what is causing the fuse to repeatedly blow. If you use a fuse with the wrong amperage, the fuse won’t blow as intended, damaging the circuit and resulting in a much larger repair bill. What happens if you put a bigger amp fuse? So replacing the fuse by a 5 A wire will allow more current than the rated value through the system and might damage appliances or trigger a higher protection scheme to act promoting larger blackout. If the component is rated for a higher amperage, then you are safe, and your fuse will protect your equipment.Ī 3A fuse is supposed to break the circuit for any current higher than 3 Amps. You go any higher and that higher amp is going to your component, possibly damaging it. Can I use a 7.5 fuse instead of 5?Īs long as it bigger than 5amps fuse u can use 7.5, 10 15 or 20 amps fuse your good. The L denotes that it is a low breaking capacity or glass fuse (H is High breaking capacity and is usually a ceramic package). The number and the A (may be mA) is the amp rating of the fuse. ![]() READ: Why does it feel good to poop in your pants? What does mA mean in fuses? ![]() The fuse has a specific amperage rating because it is intended to be the weak link in the circuit to protect the electrical components. One can use a smaller amp fuse temporarily, but one should not use a higher rated fuse temporarily, as it could cause worse electrical problems or be physically dangerous.ĭo not replace a blown fuse with one that has a higher amperage rating. Can I replace a higher amp fuse with a lower amp fuse? It should not only be the correct amperage but also the correct voltage and fast or slow blow. It could cause a failure of the device burn it up, start a fire. If you replace a fuse with a higher amp one it will work but create an unsafe circuit. ![]()
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