Nothing much. Use a BS1363 fuse. The job of the fuse in the plug is to prevent the wire between plug and appliance from overheating (and setting your home ablaze).
How do I know what fuse I need for my plug?
The simple calculation is watts divided by volts equals amps. After you have calculated this, it is a simple case of adding around 10% to the value and choosing the nearest fuse to match. This is a more precise method then just guessing should you require a 3, 5, or even 13 amp fuse.
Does it matter what fuse you put in a plug?
Plugs for appliances rated between about 700 watts and 3000 watts (the maximum rating of a wall socket) should be fitted with a 13-amp fuse (coloured brown). For example: 13A Fuse – Washing machine, dishwasher, microwave, kettle, toaster, iron.
What is a fuse for in a three pin plug?
Three-pin plug. The inside of a three-pin plug and a selection of fuses. A fuse consists of a fine wire which protects an electrical appliance from overload. If the current rises too high the fuse melts and breaks the circuit.
What fuse should I use?
If it’s a rewireable type plug and the original fuse size fitted by the manufacturer is not known, the recommended method is to use the 700W rule: For an appliance rated as 700W or less, a 3A fuse should be fitted. For appliances above 700W, a 13A fuse should be fitted.
Is it OK to use a 13amp fuse instead of a 3 amp?
A 3A fuse is the safest to use and should be used for appliances at 700w or less. Appliances rated above 700w should use a 13A fuse. Be extra cautious when using a 13A fuse and try using a 3A fuse if and when it’s possible.
Can I use 13A fuse for 3A?
The 13A fuse is on the plug. The power rating is so low that we can quickly see that the fuse is too high and needs to be changed to a 3A one.
What happens if I put the wrong size fuse in a plug?
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. Rather than risk blowing the circuit, take the car to a repair shop to determine what is causing the fuse to repeatedly blow.
Can I put a 3A fuse in a 13a fused spur?
As long as it’s fused down to 3 amps whether in a fuse spur or in a plug top, both are just as safe.
Can I use a 5A fuse in a 3A plug?
You can replace a 3A fuse with a 5A one. Is that correct? It is not wise to replace a fuse with one that can carry more current. First, make sure that your fire insurance is up to date, if you replace a fuse with one with a higher current rating.
How big a fuse do I need?
Find the size of fuse by multiplying the amps required by the device (2) by 1.5. 2×1.25 = 2.5 then we will round up to the nearest fuse size (in multiples of 5 amps) which would call for a 5 amp fuse. Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart.
What are the 3 types of fuses?
Classification of Fuses
Fuses can be classified as “One Time Only Fuse”, “Resettable Fuse”, “Current limiting and non – current limiting fuses” based on the usage for different applications.
Can I put a 5a fuse in a 13a plug?
You won’t do any damage – the fuse will just blow – but it most likely won’t work. Check the rating on the back: if it is more than about 1000 watts you’re not going to get anywhere.
Can I put a bigger fuse in a plug?
Do not replace a blown fuse with one that has a higher amperage rating. The fuse has a specific amperage rating because it is intended to be the weak link in the circuit to protect the electrical components.
Can you put a different fuse in a plug?
A standard plastic plug typically has the fuse internally mounted and needs to be opened up. A moulded plug is generally very easy to replace the fuse on – the fuse holder is popped out using a small flat bladed screwdriver or similar and then a new fuse can be seated and the holder reinstated.
How big of a fuse do I need for my amp?
If your amplifier has an internal fuse, your inline car amp fuse should be a bit larger. For example, use a 25- or 30-amp inline fuse if your amp has an internal 20-amp fuse. If you have two amps with internal fuses, add the amperage ratings together to figure out the right size for your inline fuse.
Can you run an amp without a fuse?
If you can’t and there is no way that wire can short on anything, then you could get away without it if the amp has fuses….but it should be fused on battery.
Can I use a 30 amp fuse instead of 20?
Replacing a 20-amp fuse with one rated at 30 Amp is dangerous because it may not blow soon enough and damage an electrical component or start a fire.
What happens if fuse is too big?
When a large wire is used, it enables a large current to pass through and damage the devices in the circuit with a limited current rating. That is why it is also quite unsafe to use larger wires with the fuse. Moreover, oversize fuses are dangerous and should be replaced with the right size.
What happens if you use a smaller fuse?
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.
