Insulator

An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily. The property that distinguishes an insulator is its resistivity; insulators have higher resistivity than semiconductors or conductors.

A perfect insulator does not exist, because even insulators contain small numbers of mobile charges (charge carriers) which can carry current. In addition, all insulators become electrically conductive when a sufficiently large voltage is applied that the electric field tears electrons away from the atoms. This is known as the breakdown voltage of an insulator. Some materials such as glass, paper and Teflon, which have high resistivity, are very good electrical insulators. A much larger class of materials, even though they may have lower bulk resistivity, are still good enough to prevent significant current from flowing at normally used voltages, and thus are employed as insulation for electrical wiring and cables. Examples include rubber-like polymers and most plastics which can be thermoset or thermoplastic in nature.

Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves. An insulating material used in bulk to wrap electrical cables or other equipment is called insulation. The term insulator is also used more specifically to refer to insulating supports used to attach electric power distribution or transmission lines to utility poles and transmission towers. They support the weight of the suspended wires without allowing the current to flow through the tower to ground.

* Description and images provided by Wikipedia under CC-BY-SA 3.0 license .

Scholarships for Insulator Majors

Bullet name award deadline Link
 

New Beginnings Scholarship

Lake Trust Credit Union

Up to $5,000 March 12, 2021 See Details
 

New Beginnings Scholarship

Lake Trust Credit Union

award

Up to $5,000

deadline

March 12, 2021
See Details
 

Nat Moore Vocational Grant

Miami Dolphins

$3,500 Varies See Details
 

Nat Moore Vocational Grant

Miami Dolphins

award

$3,500

deadline

Varies
See Details
 

Skilled Trades Residential Construction Scholarship

Houzz Inc.

$2,500 March 31, 2021 See Details
 

Skilled Trades Residential Construction Scholarship

Houzz Inc.

award

$2,500

deadline

March 31, 2021
See Details
 

Tom Browne Scholarship

Community Foundation of Gaston County

$2,000 April 12, 2021 See Details
 

Tom Browne Scholarship

Community Foundation of Gaston County

award

$2,000

deadline

April 12, 2021
See Details
 

Dana Ebel Memorial Scholarship

Minot Association of Builders

$500 March 31, 2021 See Details
 

Dana Ebel Memorial Scholarship

Minot Association of Builders

award

$500

deadline

March 31, 2021
See Details
 

Alabama Home Builders Foundation Scholarship

Alabama Home Builders Foundation

Varies March 15, 2021 See Details
 

Alabama Home Builders Foundation Scholarship

Alabama Home Builders Foundation

award

Varies

deadline

March 15, 2021
See Details
 

Donald F. Thompson Scholarship

Richland County Foundation

Varies April 01, 2021 See Details
 

Donald F. Thompson Scholarship

Richland County Foundation

award

Varies

deadline

April 01, 2021
See Details
 

Gust K. Newberg Construction Scholarship

Dickinson Area Community Foundation

Varies March 15, 2021 See Details
 

Gust K. Newberg Construction Scholarship

Dickinson Area Community Foundation

award

Varies

deadline

March 15, 2021
See Details
 

Hispanic Contractors Association de San Antonio Inc. Scholarship

Alamo Community College District

Varies September 05, 2021 See Details
 

Hispanic Contractors Association de San Antonio Inc. Scholarship

Alamo Community College District

award

Varies

deadline

September 05, 2021
See Details