# What is 13 amp fuse used for?

## What is 13 amp fuse used for?

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.

Can I use a 13A fuse in a 3a plug?

No it won’t. The only difference would be the current that flowed under fault conditions. If the OP replaced the cable on his lamp to a size that could handle at least 13A under normal/fault conditions then he could leave that 13A fuse in place until rapture!

How do you calculate fuse rating?

The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance. I (Amps) = P (Watts) ÷ V (Voltage).

### What is a fused neutral?

If the circuit is overloaded, one fuse will usually blow before the other. If the fuse on the white wire blows, the circuit will stop working, and the fuse on the black wire won’t blow. The outlets won’t be operable and the lights will go out.

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

Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. 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.

How many watts can a 1 amp fuse handle?

3kWatts divided by 230 = 13.04amps. 3000 Watts is the maximum it is safe to put on a 13amp fuse in a plug.

#### What happens if I use the wrong fuse?

Fuses are present to protect the components of the electrical system. Rather than destroying the circuit when there is a surge of power, the fuse blows to protect it. 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.

Does neutral need a fuse?

A single fuse in the neutral conductor provides protection for neutral-to-phase faults, but not for phase-to-ground faults. This is one reason why a single fuse in the neutral is not permitted.

Why are fused neutrals a bad idea?

Having a device appear to be electrically dead while its components are electrically live can be dangerous; if the neutral were fused, an overcurrent fault could easily create that dangerous condition unless the fusing assembly ensured that an overcurrent condition would disconnect both hot and neutral simultaneously.

## Can I use a higher amp fuse?

In general, NO. 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.

What amps are the fuses?

The main fuses are often 60-amp, while fuses for appliance circuits are more typically 30-amp or 40-amp devices. The most common sign of a blown fuse is a power outage in one or more areas of your home. Fuses, unlike breakers, do not have on-off switches.

How many amps to fuse the headlight circuit?

For the high-beam fuses, in particular, I would start conservatively. Your average high beam (for a normal headlight) is 55 or 65 watts. In a 12 V circuit, that’s less than 6 amps nominally. If you put in a 10 amp fuse, you should be ok.

### How do you calculate fuse size?

Identify the load current in the circuit. See this guide to learn how to calculate load current.

• Identify the smallest gauge wire the load current will flow through.
• Enter values in the calculator below