An Electric fuse prevents dangers like excessive temperatures and power surges to the electrical systems.
It is placed in a circuit so that during a high current from an overloaded or short circuit, it gets melted and thus breaks the circuit.
What is a Fuse Box?
The fuse box is a metal box which acts as a central hub of the electrical system, here the incoming voltage is separated into the various circuits,which supply power to every electrical system in your home.
It is also known as a service panel, breaker panel, or junction box.
How Does a Fuse Work?
According to National Electrical Code,a fuse is an Overcurrent Protective Device (OCPD).
A fuse contains a fusible element which is a piece capable of melting.
When the fuse element receives more power than it can handle, it melts, making the circuit break, rendering that the circuit is finished and safe.
Once this happens, the fuse needs to be replaced with a new one.
What Are the Different Types of Fuse?
There are mainly three styles of fuses used
Type-T (Edison base) Fuses: These are standard fuses that are used for 120 to 125-volt household circuit.
Type-S (Rejection base) Fuses: These types of fuses contain fuse alongwith an adapter that can fit inside an Edison-type socket.
Cartridge Fuses: These fuses are used for 240-volt appliance circuits, controlling the power of the fuse box.
Why Do Fuses Blow?
Fuses can blow for several reasons, namely:
Short Circuit Fuse Blows: Short circuits occur when a low-resistance electricity path receives a high-volume current. For instance-if a nail pierces electric cables, water can enter the electrical box and cause a short circuit.
Overload Fuse Blows: Sometimes electric overload that is six times more than the normal current flow can make the circuit to open and the fuse to blow. This happens when too many devices are plugged into the same circuit.
Ground Fault Fuse Blows: When a powered hot wire touches anything grounded like a metal pipe, electrical box, an outlet, your hand,it results in a ground fault causing the electric fuse to blow.
How To Know a Fuse is Blown?
Either visually or with the help of a device called a continuity tester or ohmmeter, you can know whether a fuse has blown.