What is a time delay fuse and what should I do when encountering one?
A time delay fuse is specifically designed for certain applications. Fuses are an integral part of residential electrocution and fire protection. Fuses are designed to fit certain appliances and circuits. If more electrical current contacts a fuse than the fuse is designed for, the contact will cause the fuse to burn out. This stops the electrical current from passing the point of the fuse. This makes the circuit a dead circuit. The operation is similar to the mechanical function of a traditional light bulb. The light contains a thin strip of conductive metal that glows, but does not blow unless the metal becomes weakened by extended usage or by sustaining an improper surge. Fluorescent lamps require a surge to start their function initially. They contain time delay fuses to protect their vulnerable circuitry form that initial sustained surge. This is a common use for time delay fuses in motors, or appliances. These items need the surge to begin or sustain functionality. Often, the electrical motor or surge is necessary to start the function only.
Time delay fuses are engineered to allow an electrical surge for a short period. This exposes the part of the fuse that would normally blow quickly to handle large loads for a small amount of time before that section blows. They are sometimes called slow-blow fuses. Time delay fuses are used in electric motors. These motors require a surge of power to start their mechanical movement. Time delay fuses allow for this surge, but still protect the circuit if the heavy charge is sustained beyond the point that the fuse is rated. This means fuses of any kind should be used for their specific purpose. Using fuses improperly can cause fires and subject people to electrocution. They can also damage or destroy appliances and their internal motors. A blown fuse not only indicates a surge, but it also indicative of a serious electrical problem. The cause of repeated fuse failure indicates that the electricity is surging for a specific reason. A qualified licensed electrician should be called immediately if residential fuses need to be changed often.
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