Electrical Acronyms and Definitions

(a)   are brief, momentary bursts of energy with high voltage and current that can travel through power or data lines. These events, also called voltage spikes, can be caused by internal sources like a motor starting up or external events like lightning strikes, and can damage or disrupt electronic equipment

Which acronym stands for Arc-Fault Circuit Interrupter?

• AFCI

• ALCI

• GFCI

• OCPD

Answer explanation

The acronym AFCI stands for Arc-Fault Circuit Interrupter, which is designed to prevent electrical fires by detecting arc faults. The other options (ALCI, GFCI, OCPD) refer to different types of circuit protection devices.

What is the correct full term for GFCI?

• Ground-Fault Circuit Interrupter

• General Fault Current Indicator

• Grounded Fuse Circuit Isolator

• Ground-Frequency Current Inverter

Answer explanation

The correct full term for GFCI is "Ground-Fault Circuit Interrupter." This device is designed to protect against electrical shock by interrupting the circuit when it detects a ground fault.

Which device is specifically defined as a Surge Protective Device?

• SPD

• TVSS

• CT

• EGC

Answer explanation

A Surge Protective Device (SPD) is specifically designed to protect electrical equipment from voltage spikes. While TVSS (Transient Voltage Surge Suppressor) serves a similar function, SPD is the formal term used in standards.

A technician needs protection against transient voltage surges on a panel. Which listed acronym directly names a Transient Voltage Surge Suppressor?

• TVSS

• IG

• CT

• ALCI

Answer explanation

The acronym TVSS stands for Transient Voltage Surge Suppressor, which directly identifies the device needed for protection against voltage surges. The other options do not refer to surge suppressors.

What does the acronym OCPD stand for in electrical safety?

• Output Current Phase Detector

• Open Circuit Power Distributor

• Overload Circuit Protection Detector

• Overcurrent Protective Device

Which of the following devices is designed to protect against ground faults?

• OCPD

• CT

• SPD

• GFCI

Which acronym refers to a device that interrupts current flow in the event of an arc fault?

• AFCI

• TVSS

• SPD

• GFCI