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.

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Scholarships for Insulator Majors

Bullet name award deadline Link
 

NCK Tech Kansas Promise Scholarship

North Central Kansas Technical College

Up to $20,000 Varies See Details
 

NCK Tech Kansas Promise Scholarship

North Central Kansas Technical College

award

Up to $20,000

deadline

Varies
See Details
 

NASCLA Scholarship Program

National Association of State Contractors Licensing Agencies

Up to $5,000 June 30, 2023 See Details
 

NASCLA Scholarship Program

National Association of State Contractors Licensing Agencies

award

Up to $5,000

deadline

June 30, 2023
See Details
 

John Grossheim Memorial Scholarship

Nuts, Bolts, and Thingamajigs Foundation

Up to $3,500 Varies See Details
 

John Grossheim Memorial Scholarship

Nuts, Bolts, and Thingamajigs Foundation

award

Up to $3,500

deadline

Varies
See Details
 

Donohue Family SkillPointe Scholarship

SkillPointe Foundation

$2,000 Varies See Details
 

Donohue Family SkillPointe Scholarship

SkillPointe Foundation

award

$2,000

deadline

Varies
See Details
 

Home Depot Foundation's Path to Pro Scholarship

SkillPointe Foundation

$2,000 June 30, 2023 See Details
 

Home Depot Foundation's Path to Pro Scholarship

SkillPointe Foundation

award

$2,000

deadline

June 30, 2023
See Details
 

U.K. Gupta and Family Scholarship

Nuts, Bolts, and Thingamajigs Foundation

Up to $2,500 Varies See Details
 

U.K. Gupta and Family Scholarship

Nuts, Bolts, and Thingamajigs Foundation

award

Up to $2,500

deadline

Varies
See Details
 

Nuts and Bolts Foundation Scholarship

Nuts, Bolts, and Thingamajigs Foundation

Up to $2,500 Varies See Details
 

Nuts and Bolts Foundation Scholarship

Nuts, Bolts, and Thingamajigs Foundation

award

Up to $2,500

deadline

Varies
See Details
 

Henry T. Schatz Endowed Scholarship

Bates Technical College

$1,500 Varies See Details
 

Henry T. Schatz Endowed Scholarship

Bates Technical College

award

$1,500

deadline

Varies
See Details
 

Schatz/Quasim Endowed Scholarship

Bates Technical College

$1,000 Varies See Details
 

Schatz/Quasim Endowed Scholarship

Bates Technical College

award

$1,000

deadline

Varies
See Details
 

Lancaster County Farm Bureau Scholarship

Southeast Community College

$1,000 Varies See Details
 

Lancaster County Farm Bureau Scholarship

Southeast Community College

award

$1,000

deadline

Varies
See Details