Why do you use insulated wire

A piece of iron can be used as a core and a roll of copper wire can be used to insulate the core. The iron core must be winded with copper wire and induced with electricity.

But when you coil the wire around an iron nail, the magnetic domains inside the nail line up and make a strong, temporary magnet. If you disconnect the wire, the magnetic field disappears and the nail is no longer a magnet.

Electromagnets are made of coils of wire with electricity passing through them. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet.

The Metal Core The metal inside the coil magnifies the field created by it. Changing the metal core for a different metal will make the electromagnet stronger or weaker. Iron cores make for very strong fields. Steel cores make weaker fields. The strength of the magnet will increase with the increase in the thickness of the wire too because it is already known that resistance is inversely proportional to cross-sectional area. Thus as resistance drops, more current will flow through the electromagnet causing a larger magnetic field.

The magnetic field is caused by the current flowing in the wire. The bigger the current the stronger the magnetic field and hence the stronger the electromagnet. This operates a solenoid electromagnetic switch that opens a valve on the water inlet pipe. With the valve open, pressurized cold water flows into the shower from your ordinary household supply. The large temperature dial you turn controls this valve, making the water hotter or colder as you require.

The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. Electromagnets are also employed in industry for picking up and moving heavy iron objects such as scrap iron and steel. Cloth wiring is considered dangerous because the cloth insulation around these wires can become brittle and deteriorate overtime.

As the insulation around these wires deteriorates, there is a higher risk of a fire developing. ACSR conductors are used for high voltage transmission line. The conductor is not covered with insulation because the conductors are seperated according to the voltage grades of the line and the air acts as an insulator between them.

Copper wires are usually covered with rubber or plastics to prevent shocks and ensure safety. Because plastics and rubbers are insulators of electricity i. You will receive a shock if you touch a live wire and are grounded at the same time. When a circuit, electrical component, or equipment is energized, a potential shock hazard is present. Skip to content Common questions. April 24, Joe Ford. TPR is not cut-through resistant but can be used in applications where other properties of rubber are preferred.

Neoprene is also known for its usability, long service life and wide ranges of temperatures. It is remarkably flame retardant and self-extinguishing. SBR is primarily used to insulate Mil-C cables. Its common applications are heat-treating, glass and ceramic kilns, foundries, and extensive applications in aluminum processing. Some of its well-known properties are thermal and electrical.

It is commonly used in high-voltage cables. EPR is also heat, oxidation, weather, water, acid, alcohol, and alkali resistant. Rubber Due to the variety of formulas that can be used to create rubber insulation, temperature ranges vary as well. Some good characteristics of rubber insulation include low-temperature flexibility, water and alcohol resistance, electrical properties, and excellent abrasion resistance.

It works well as a low-voltage insulation and performs at a wide range of temperatures. This insulation material can be found in appliance wire, lead wire, coil leads, transformer leads, and motor lead wire. Has an excellent electrical property as well as heat, ozone, weather, and abrasion resistance. View Map. Company About Us Certifications. Products and Services Industries Partnerships. This is a fairly inexpensive and easy-to-use material. A form of PVC cable insulation, this is mainly used as primary insulation and is very abrasion resistant.

Plenum PVC, yet another polyvinyl chloride wire insulation material, is great for use in building spaces behind dropped ceilings or raised floors, which are left open to allow for air circulation.