NCCER Level 1 Residential Wiring Exam
Questions and Answers
The square footage of living space that will be used to determine the lighting load
of the home in the figure provided is? - ANSWER-1,200 ft2
To control a device from three locations, a four-way switch must be used with
which of the following? - ANSWER-Two three-way switches
Ceiling fan boxes must be marked with the maximum weight to be supported when
they are rated to support more than? - ANSWER-35 lbs
The NEC* general lighting load for the home in the figure provided is? - ANSWER-
3,600 VA
The NEC® article that provides the rules for demand factors is? - ANSWER-NEC
Article 220
Applying the correct demand factors, the net general lighting load for the residence
in the figure provided is? - ANSWER-3,210 VA
An example of a location in a dwelling where a receptacle must have GFCI
protection is a(n)? - ANSWER-garage
The NEC* allows the load calculation for the grounded neutral conductor supplying
electric ranges and dryers to have a demand factor of? - ANSWER-70 percent
A residence has conductors installed under a 2" (50 mm) slab. According to NEC
Section
230.6, these conductors are considered? - ANSWER-outside the house, and no
disconnect is required at the meter base
A GFCI sensor will trip when the? - ANSWER-current in the neutral load is less than
the current in the hot load.
A grounding electrode conductor must be made of? - ANSWER-copper or aluminum
Which of the following must NEVER be used as a grounding electrode? - ANSWER-A
metal underground gas piping system
Listed FMC may be used as an equipment grounding conductor if the circuit
conductors are protected by overcurrent devices rated at? - ANSWER-20A or less
The main bonding jumper is located at the? - ANSWER-service disconnect
Questions and Answers
The square footage of living space that will be used to determine the lighting load
of the home in the figure provided is? - ANSWER-1,200 ft2
To control a device from three locations, a four-way switch must be used with
which of the following? - ANSWER-Two three-way switches
Ceiling fan boxes must be marked with the maximum weight to be supported when
they are rated to support more than? - ANSWER-35 lbs
The NEC* general lighting load for the home in the figure provided is? - ANSWER-
3,600 VA
The NEC® article that provides the rules for demand factors is? - ANSWER-NEC
Article 220
Applying the correct demand factors, the net general lighting load for the residence
in the figure provided is? - ANSWER-3,210 VA
An example of a location in a dwelling where a receptacle must have GFCI
protection is a(n)? - ANSWER-garage
The NEC* allows the load calculation for the grounded neutral conductor supplying
electric ranges and dryers to have a demand factor of? - ANSWER-70 percent
A residence has conductors installed under a 2" (50 mm) slab. According to NEC
Section
230.6, these conductors are considered? - ANSWER-outside the house, and no
disconnect is required at the meter base
A GFCI sensor will trip when the? - ANSWER-current in the neutral load is less than
the current in the hot load.
A grounding electrode conductor must be made of? - ANSWER-copper or aluminum
Which of the following must NEVER be used as a grounding electrode? - ANSWER-A
metal underground gas piping system
Listed FMC may be used as an equipment grounding conductor if the circuit
conductors are protected by overcurrent devices rated at? - ANSWER-20A or less
The main bonding jumper is located at the? - ANSWER-service disconnect
