# An Electrical Current Flowing Through A Wire Creates What How to Determine The Correct Size Fuse

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## How to Determine The Correct Size Fuse

In the last 5 years, electrical fires have caused property damage worth billions of US dollars. With many high-rise buildings coming up in various cities of this country, it is very important to have the right size fuse installed in your home by an electrician to reduce the chances of an electrical fire.

A fuse is a useful safety device that contains a conductive element, which allows current to flow under normal conditions. If the fuse detects an overflow of current greater than the fuse rating, the component melts, stopping current flow.

Using the right size fuse is important if you want to make your home safe and secure in the event of an overload or short circuit. An undersized fuse will interrupt the normal power supply, while using a larger sized fuse will not stop the high current generated during an overload.

Tips for choosing the right size fuse

According to NEC guidelines, before you hire an electrician to install a fuse, you should ask him to determine the ampere rating of the circuit. The ampere rating of the fuse should be slightly higher than the circuit rating. You can calculate the amperage by finding the total load or wattage of the circuit and dividing it by the voltage being supplied.

For example, all American homes are supplied with 110-volt AC current. If the circuit consumes 1200 watts, the amount of current flowing through the circuit at any time is 1200/110= 10.9 amperes. In such a case, a 15 amp fuse must be used in the circuit.

Professional electricians suggest that you take extra care when choosing the right size fuse for circuits connected to induction motors or wire coil windings. This is because such circuits experience more congestion when the power is on and consume less power when the device is on. In such a case, you need to buy a fuse specially designed for induction motor or one that comes with a time delay rating.

When choosing a fuse, you should find out what kind of voltage it will protect. It is possible to purchase separate fuses to protect AC or DC circuits, or one can purchase dual rated fuses that can handle both types of power.

If you are unable to determine the correct fuse size yourself, take the help of an experienced electrician in your city to find the correct fuse.

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