#1
What is the typical height at which electrical outlets should be installed in a residential setting?
12 inches above the floor
18 inches above the floor
24 inches above the floor
36 inches above the floor
#2
What is the purpose of a knockout in an electrical box?
To improve aesthetics
To allow cable entry
To enhance grounding
To regulate temperature
#3
What is the purpose of an extension ring with a domed cover in an electrical box?
To provide additional wiring space
To improve aesthetics
To regulate electrical current
To enhance grounding
#4
What is the purpose of an offset nipple in electrical installations?
To improve aesthetics
To provide additional wiring space
To enhance grounding
To offset the position of the electrical box
#5
What is the minimum clearance required in front of an electrical panel for accessibility?
6 inches
12 inches
18 inches
24 inches
#6
Which of the following is a correct statement regarding junction box installation?
Junction boxes can be covered with insulation material
Junction boxes must remain accessible
Junction boxes can be installed upside down
Junction boxes are not required in electrical installations
#7
Which NEC (National Electrical Code) section provides guidelines for the installation of electrical boxes?
Article 210
Article 250
Article 300
Article 314
#8
In a residential kitchen, what is the minimum number of receptacle outlets required on the countertop?
#9
What is the primary function of a GFCI (Ground Fault Circuit Interrupter) in an electrical box?
To regulate voltage
To prevent overcurrent
To protect against ground faults
To control lighting fixtures
#10
What is the purpose of a grounding electrode for an electrical box?
To provide power to the electrical system
To protect against electrical shock
To improve electrical conductivity
To increase the load capacity
#11
When installing a ceiling fan, what is an essential consideration for the electrical box?
The color of the box
The weight-bearing capacity of the box
The proximity to water sources
The number of outlets in the box
#12
What is the purpose of an anti-short bushing in an electrical box?
To prevent overloading
To protect against short circuits
To enhance aesthetic appeal
To improve grounding
#13
What is the purpose of an electrical box extension ring?
To provide additional wiring space
To reduce electrical resistance
To enhance fire resistance
To improve energy efficiency
#14
What is the primary purpose of a weatherproof electrical box?
To prevent electrical shocks
To protect against weather elements
To regulate electrical current
To increase energy efficiency