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How to Replace a Fuse
Wednesday, May 30, 2018

Sooner or later you may face a short circuit or any other electrical problem which blows off the fuse. By reading this guide, you will have a better idea that it is quite easy to replace a broken fuse.

It can never hurt to be prepared! The first step, which is the easiest, is to switch off the main supply. After you have shut down the power, you need to locate the fuse and identify its type.

We will discuss the different types of fuse and how you can replace them.

Plug Fuse

Plug fuses are screwed into a socket and can be easily replaced. Since there are two thread sizes, you have to determine the right size. You can simply take the blown fuse to the store, show it to the shopkeeper and buy a new one.

If the silver wire inside the fuse is burned or the glass window is blackened, then you will have to replace the fuse. Changing the fuse is simple. You first unscrew the broken fuse and then screw the new one in the same place. Sometimes the fuse might be stuck and you will have to carefully use a tool to take it out.

Cartridge Fuse

Cartridge fuses are not commonly found in houses. They can be present in a small electrical box inside rooftop swamp coolers, outdoor air conditioner units and well pumps. You have to be careful in choosing the right kind of this fuse as they are available in different sizes.

Removing a blown cartridge fuse is more difficult than replacing a plug fuse. A tool such as a fuse puller can do the job. If you are unsure that the fuse is still receiving power or not, you can use a voltmeter or non-contact voltage detector to check for voltage.
Using the fuse puller, you need to hold the fuse near the center and then pull it out from the holding clips. Alternatively, you can use pliers or screwdriver, but make sure that you do not crush the fuse by squeezing it hard. After taking out the blown fuse, push the bottom of the new fuse into the clips.

Blade Fuse

These fuses are normally colored to indicate amperage. Use a new fuse with the same size and color to replace the old one. It is necessary that you use a fuse puller to supply the required force to remove it. Pull the fuse out by grasping its center and push the new fuse in the same place.

Glass Tube Fuse

These fuses are available in different sizes and amperages. Do not use pliers to remove the blown fuse or else you might crush the glass. Using the fuse puller, take the fuse out by holding it in the center. Push the new fuse in the vacant place using the tool.
If you are planning to buy a new fuse, you can purchase it from Midwest Equipment. Not only will you get a competitive price, but also a quick delivery as well.



 

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  • General
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  • Circuit Protection
    • 09/12/2018 - Why Are Fuses Important?
    • 08/31/2018 - Miniature Circuit Breakers: Ty
    • 08/15/2018 - Miniature Circuit Breakers: Ty
    • 05/30/2018 - How to Replace a Fuse
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  • Relays vs. Solenoids vs. Contactors: A Comparison
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