12 Questions
What is the primary purpose of grounding in residential electrical systems?
To protect against electrical shock
In a residential electrical system, which color is typically used for grounding conductors?
Green or bare
Which type of wiring method is commonly preferred for residential electrical installations due to its flexibility and ease of installation?
Nonmetallic-sheathed cable
What is a characteristic of a circuit breaker in residential electrical systems?
It can be reset after tripping
According to the National Electrical Code (NEC), what is the minimum height requirement for electrical outlets in residential buildings?
18 inches above the floor
What is the purpose of a wire nut in residential electrical wiring?
To join two or more conductors together
What is the function of a three-way switch in a residential electrical system?
To control a light fixture from two different locations
Which of the following statements about AFCI (Arc-Fault Circuit Interrupter) devices is true?
They detect and mitigate the risk of electrical fires caused by arcing faults
Which type of wiring method is commonly used for underground residential electrical installations?
Direct-buried cable
What is the function of a surge protector in a residential electrical system?
To protect against sudden spikes in voltage
Which of the following statements about knob-and-tube wiring is true?
It is considered unsafe and outdated due to its lack of grounding
What is the main function of a light switch in a residential electrical system?
To open or close a lighting circuit
Test your knowledge about grounding, wiring methods, and safety measures in residential electrical systems with this quiz. Learn about the purpose of grounding, the color used for grounding conductors, and commonly used wiring methods in households.
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