Types of Electrical Testers

Circuit Tester

Also known as a test lamp, a voltage tester, a neon tester or a test light.

Consists of two insulated wire probes and a small neon light.

Designs vary widely

Used to determine if there is electricity running through a circuit or if it is properly grounded.

Recommend as a basic tool for every toolbox.

Continuity Tester

Used to determine if a wire or circuit can carry electricity from one end to the other.
Generally consists of two probes (one of them being an alligator clip) and an indicator light powered by a battery.

Can also be used to test cartridge fuses.

Receptacle Analyzer

Analyzes a receptacle to determine whether or not the wiring is sound, if it is grounded and if the receptacle is receiving power.

Courtesy of NRHA.org