Electrical Wiring Diagram Symbols Fuse

We all use electricity every day, whether it’s turning on a light switch, plugging in a phone charger, or powering up an appliance. Responsible electrical wiring is essential to ensure safe operation in all applications. Knowing the symbols for electrical wiring diagram fuse is a critical step to this.

Fuse symbols represent an important component in a circuit’s wiring diagram. Essentially, a fuse is a device designed to protect electric circuits from overloads. It does this by breaking the electrical flow if too much current flows through, effectively “blowing” the circuit. To do this, a fuse requires two wires: one to provide power and the other to lead current away.

A good wiring diagram will indicate the presence of the fuse with a symbol to show which numbers correspond. Commonly, this looks like an inverted triangle with two circles at the bottom, like a stylized explosion. Sometimes the ends of the line leading into the triangle are labeled “1” and “2” to indicate which wire is for power and which is for the return current. This is meant to show you that a fuse is present in the circuit and protective measures are in place.

But how do you know when a fuse needs to be replaced? Generally, the fuse will be visibly blown – charred or melted wire and casing – when an overload has occurred. Additionally, the power will be interrupted, and you won’t have any electricity through the fuse. When this happens, simply replacing the fuse with a new one is all that’s necessary to reset the circuit. Just remember to ensure the same rated fuse is being used, so it can perform the same function in the future.

Overall, correctly identifying fuse symbols in a wiring diagram is the first step to responsibly handling your electricity needs. Taking the time to properly mark and understand your circuits, and knowing when and how to replace a fuse, will ensure your safety and the safety of those around you.

Standard Electrical Circuit Symbols Stock Image T356 0593 Science Photo Library