A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds the…
Which of the following describes an Effective Ground-Fault Current Path?
An intentionally constructed, low impedance electrically conductive path designed and intended to carry current under ground-fault conditions from the point of a ground fault on a wiring system to the…
Which of the following shows the difference between Voltage and Watts?
The common measurement unit for electric power, named for Sir James Watt (1736-1819) who suggested that the unit of power be the rate at which a horse performs work. One…
What type of requirements for fire alarm system installation and function are defined by NFPA 72?
2019 NFPA 72 National Fire Alarm and Signaling Code Chapter 1 Administration 1.2 Purpose. 1.2.3 This Code establishes minimum required levels of performance, extent of redundancy, and quality of installation…
True or False: Codes represent the minimum compliance standards.
2019 NFPA 72 National Fire Alarm and Signaling Code Chapter 1 Administration 1.2 Purpose. 1.2.3 This Code establishes minimum required levels of performance, extent of redundancy, and quality of…
Which NFPA standard deals with signaling systems used for fire hazards and other situations?
2019 NFPA 72 National Fire Alarm and Signaling Code Chapter 1 Administration 1.1 Scope. 1.1.1 NFPA 72 covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm…
Of the following, which standard indicates the methods for installing a fire alarm system?
2019 NFPA 72 National Fire Alarm and Signaling Code Chapter 1 Administration Section 1.1 Scope. Sub-section 1.1.1 NFPA 72 covers the application, installation, location, performance, inspection, testing, and maintenance…
What is a Ground Fault?
2020 National Electrical Code Chapter 1 General Article 100, Definitions Section:Ground Fault An unintentional, electrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current-carrying conductors,…
A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a ground-fault current exceeds the values established for a Class A device.
2020 National Electrical Code Chapter 1 General Article 100 Definitions. Ground-Fault Circuit Interrupter (GFCI). A device intended for the protection of personnel that functions to de-energize a circuit or portion…
Connected (connecting) to ground or to a conductive body that extends the ground connection.
2020 National Electrical Code Chapter 1 General Article 100 Definitions. Grounded (Grounding). Connected (connecting) to ground or to a conductive body that extends the ground connection. Note: Review and know…