Question 61
You are asked to install NM-B cable through wood studs in a wall. What is the minimum distance the cable should be kept back from the face of the stud unless a steel plate is provided?
Question 62
Which cable type is commonly used for indoor residential branch circuits in dry locations in wood-frame construction?
Question 63
A 15 A branch circuit in a dwelling unit is typically wired with which minimum copper conductor size?
Question 64
Which wiring method is commonly used for branch circuits in commercial buildings where conductors are pulled through metal conduit?
Question 65
A journeyperson is installing MC cable in a suspended ceiling space used for environmental air handling. Which factor is MOST important to verify before installation?
Question 66
For a 120 V residential branch circuit using UF cable under a residential lawn, what is a typical minimum burial depth requirement when not otherwise reduced by special conditions?
Question 67
Which of the following wiring methods is NOT permitted for general branch-circuit wiring in a concealed, dry location in a residential dwelling according to the NEC?
Question 68
Which metal is most commonly used for branch-circuit conductors in residential wiring in the US?
Question 69
You are installing NM cable through bored holes in wood studs. What is the main reason to maintain required clearances from the edge of the stud or to use nail plates?
Question 70
Which cable type is commonly used for nonmetallic-sheathed cable in dry indoor residential wall spaces in the United States?
Question 71
Before testing a receptacle in a finished room, which tool is most appropriate for checking for voltage at the device?
Question 72
When drilling through wood studs to route NM cable, which practice is generally acceptable?
Question 73
What type of nonmetallic-sheathed cable is commonly used for general-purpose indoor branch circuits in dry locations in US residential construction?
Question 74
Which of the following is an example of a nonmetallic-sheathed cable commonly used in US residential wiring?
Question 75
When installing Type NM-B cable through wood studs in a dwelling, what is a correct practice to protect the cable from physical damage by nails or screws?
Question 76
An underground feeder to a detached garage is installed in PVC conduit. Which wiring method is appropriate for the conductors inside the conduit?
Question 77
When wiring a standard US 120 V duplex receptacle, where is the equipment grounding conductor connected?
Question 78
When digging a trench for underground wiring, what must be installed above the conduit to warn future excavators?
Question 79
What is the maximum support interval for MC (Metal Clad) cable?
Question 80
Which of the following wiring methods is typically allowed to be fished through finished walls where rigid conduit cannot be installed?