What Causes Frequent Fuse Blowouts?

[McMadison]

The reasons are as follows: First, there is a short circuit issue in the electrical appliances inside the vehicle, leading to excessive local current and causing the fuse to overheat and blow. Second, fuses that are not rated for the required power are used, making them more fragile. Third, the fuse has not been replaced for a long time, resulting in oxidation. Below are the relevant details: Short Circuit Issue: Generally, the biggest problem in vehicles is the presence of a short circuit within the electrical appliances. When a short circuit occurs inside the vehicle's electrical appliances, the current inside the vehicle abnormally increases. This causes the current passing through the fuse to rise, generating higher temperatures and leading to the fuse blowing, thereby protecting the vehicle's battery and electrical appliances. Fuse Misuse: Another issue is the misuse of fuses in the vehicle. Typically, each position in the vehicle requires a fuse rated for the specific power. If a fuse with the correct rated power is not used, the vehicle's fuse cannot function properly and will naturally blow.