Electrical elements are resistance coils that create heat through electrical friction. They are used in appliances such as stoves, water heaters, dryers, and space heaters. Elements must be made with specific materials to resist extreme heat and corrosion. They can ignite flammable objects and should never be left unattended.
An electrical element is a resistance coil designed to create heat by causing electrical friction. Almost every appliance that uses electricity to produce heat has some type of electrical element. The size and shape of the coil varies depending on its use, but the basic design remains the same.
The coil is made of a material that offers resistance to the flow, or current, of electricity. As current travels, it creates friction from the coil, which produces heat. The coil itself does not conduct electricity, so it will not deliver a shock if touched by an object that conducts electricity. The elements must be made with specific materials to resist the extreme heat produced. If they are submerged, like a water heater element, they must also be resistant to corrosion caused by moisture.
A stove is an example of an electrical element. To produce a consistent and even heat, it is coiled in a flat spiral. The elements of the dishwashers and ovens have a similar design to the range element. These are usually installed on the inside bottom or top of the appliance and are clearly visible.
An electric water heater also uses an electrical element to heat water. The element is usually shaped in the shape of a hairpin, but is similar in circumference to a stove or oven element. The element is located inside the tank. As the water enters, the element heats it to the programmed temperature. Water comes out of the heater when a hot water faucet is opened.
Dryers often use electric heat. A fan blows on the coil to move the heated air into the round cavity where the wet clothes are placed, and a motor turns the cavity so that the air can circulate. It is possible for a dryer element to catch fire if the lint box is not emptied often. Excess lint can escape the retainer and come into contact with the element.
Domestic space heater elements generally have a different design than those in your oven or dishwasher. They use smaller wires to create heat and some even have a fan to expel the heat to the surrounding area. Space heaters usually have a grill covering the element to prevent accidental contact.
While it won’t produce a flame, an electrical element will ignite flammable objects. Many kitchen fires are started because oil, food, or fabric has come in contact with the electrical element on the stove or in the oven. Stoves are also dangerous as they are often left on overnight while the family sleeps. If left too close to flammable objects, space heaters can also start fires. It is important to pay attention and never leave a running electrical element unattended.
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