__________ are usually made of insulating porcelain.

__________ are usually made of insulating porcelain.

• A. Bushings
• B. Connectors
• C. Contacts
• D. Cables

Answer: (A)

Bushings are the insulating components that allow a conductor to pass through a grounded enclosure while keeping the live parts isolated. They’re typically made of insulating porcelain because porcelain provides high dielectric strength, strong mechanical support, and good weather resistance, which are essential for outdoor, high-voltage service. Connectors are devices that join pieces of conductor, usually metal or plastic; contacts are the conductive parts inside switches or breakers; cables are insulated conductors themselves.

Bushings are the insulating components that allow a conductor to pass through a grounded enclosure while keeping the live parts isolated. They’re typically made of insulating porcelain because porcelain provides high dielectric strength, strong mechanical support, and good weather resistance, which are essential for outdoor, high-voltage service. Connectors are devices that join pieces of conductor, usually metal or plastic; contacts are the conductive parts inside switches or breakers; cables are insulated conductors themselves.