State the purpose of an electrical insulator. - Leaving Cert Engineering - Question d - 2012

An electrical insulator is primarily used to prevent the flow of electrical current. Insulators are materials that do not easily allow the passage of electricity, which is essential for ensuring the safety and proper functioning of electrical systems. By stopping the flow of electrical current, insulators help to protect users from electric shocks and prevent short circuits that can lead to equipment damage or fire hazards.