Quick Answer: What Happens If You Use The Wrong Size Fuse?

How do you know what size fuse to use?

You’ll usually find the fuse rating on the side of your fuse, which will be given in amps.

Fuse rating is the amount of current needed for the fuse to blow or break.

When this happens, it stops the electrical power from flowing through the electrical circuit..

Can I use a different size fuse?

A smaller fuse may always be used safely in a circuit; however, never use a larger fuse. Of course, if the current exceeds 15 amps, your fuse will blow.

Does it matter which way fuse goes in?

It doesn’t matter which end of the fuse holder gets used for going to the battery and which goes to the jack. Fuses don’t require current to flow through them in a certain direction so either way is fine. But typically line is the side that the power comes in on and load is the power going out.

Can I replace a 10amp fuse with a 5 amp?

Possibly yes. Some circuits in older houses might contain Fuse Wire instead of Fuses. … If this is the case in your house, you should use 5 amp wire for a lighting circuit, 15 amp for an immersion heater circuit, 30 amp wire for a ring main or cooker circuit (for cookers up to 12 kw).

Can you put a fuse in backwards?

In general no. They can be put in either way. One thing to note fuses have a voltage ratings. Fuses with different voltage ratings will fit into the same holder.

Which side of fuse is positive?

Fuses can be used either way around, there is no difference between the ends. Except after it has blown, then you can put a multi-meter across the fuse and the end that is being supplied with power will be positive (hot) while the other end will be zero volts (cold).

Can I replace a fuse with a lower amp?

Do not use a fuse with a lower rating– don’t put a 20 amp fues in a 30 amp circuit–because it probably will blow prematurely. Conversely replacing a 20-amp fuse with one rated at 30 amps is dangerous because it may not blow soon enough and damage an electrical component or start a wiring fire.

Why is it dangerous to use the wrong fuse in an appliance?

The fuse breaks the circuit if a fault in an appliance causes too much current to flow. This protects the wiring and the appliance if something goes wrong. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great, the wire heats up until it melts and breaks the circuit.

Can I use a 30 amp fuse instead of 15?

You MAY be ok with a 30amp in place of the normal 15, but you MAY also burn up some wireing, and/or the whole bike. In any case the work done needs a good going over.

Can I replace a 10amp fuse with a 13amp fuse?

If you replaced it with 13A fuse, it will allow current more than 10A, so it may possible that other components may get damage due excessive current flow than specified. If TV components can sustain up to 13 A current, you can replace it. … You can put a smaller fuse in with the same “speed” rating.

Should I disconnect battery before changing fuse?

No you do not need to disconnect the battery to check fuses. Just pull the fuse out and give it a visual, most of the time you can see that they are blown.

What are 3 amp fuses used for?

Different types of fuses Plugs for appliances rated up to about 700 watts should have a 3-amp fuse (coloured red). For example: 3A Fuse – Table lamp, standard lamp, television, video, computer, mixer, blender, fridge, freezer, power drill, jig saw, soldering iron.

What happens if you use a higher rated fuse?

Replacing a fuse with a higher-amp fuse is a very bad idea and can lead to fires. Fuses (and circuit breakers) are rated such that they blow or trip before any part of the circuit gets to a dangerous current. You rate the fuse or breaker based on the lowest current rating of all the devices and wires in the circuit .

How can you tell if a 13a fuse is blown?

Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

Can I use a 10 amp fuse instead of 15?

You can, it will may immediately blow, but it won’t hurt anything other than the fuse. … What you don’t want to do is use a higher amp fuse or something like a jumper wire. That could damage the wiring and start a fire.

Can I replace a 13a fuse with a 5a fuse?

not it’s not. the device can’t take more than 5A that’s why it has a 5A fuse. if you put a 13A fuse in the device might take upto 13A before the fuse blows and more than likely you’ll fry it.

Can you replace a 15 amp fuse with 20?

The answer: It’s possible, but not advisable without an electrician evaluating the situation. You should never just upgrade from a 15-amp breaker to a 20-amp one just because the current one is tripping. Otherwise, you may burn your house down via electrical fire.

Can I use 13a fuse for 3a?

For an appliance rated as 700W or less, a 3A fuse should be fitted. For appliances above 700W, a 13A fuse should be fitted. … BS1363 has standardised on just two preferred fuse ratings, 3A and 13A, however any fuse rating up to 13A can still be used.