General Requirements for Wiring Methods
The minimum burial depth of a 15-ampere 120-volt circuit, consisting of a GFCI protected UF cable and run to a lamp post on residential property, without passing underneath any driveway, is _____ inches.
12
What is the minimum burial depth for UF cable from a 20 amp 120 volt branch-circuit GFCI protected feeding a residential garage?
12
What is the mimimum burial depth for RMC ran underground under a residentail driveway?
18
What is the minimum burial depth for PVC under a public sidewalk 4 inches from the edge?
18
Where raceways containing ungrounded conductors _______ or larger enter a cabinet, the conductors shall be protected by a substantial fitting providing a smoothly rounded insulating surface.
4 AWG
What is the minimum length of free conductor required in a 4" deep, 6" x 6" box where the conductor enters the box from the back through a 1/2" EMT?
7
Where boxes or cabinets have an approved system of organic coating and are marked "____", they shall be permitted outdoors.
Raintight, Rainproof & Outdoor Type
Which of the following wiring methods is not allowed to be installed in ducts or plenums specifically fabricated to transport environmental air?
AC Cable
Conductors of _______ shall be permitted to occupy the same equipment wiring enclosure.
AC and DC circuits rated 600 volts, nominal, or less
One cable support shall be provided at the top of the vertical raceway or _____
as close to the top as practical
Where cables such as Romex or AC are stapled parallel to studs or joists, the cable shall be________.
at least 1 1/4 inch from the edge of the stud or joist
What is the minimum burial depth for UF cable under a building ran in conduit?
0
When supporting Romex parallel to framing members, such as joists, rafters, or studs, how close to the nearest edge can it be installed?
1 1/4 inches
Underground service conductors that are not encased in concrete and that are buried ____ or more below grade shall have their location identified by a warning ribbon that is placed in the trench at least ____ above the underground installation.
18 inches/12 inches
A 30-ampere, 120 volt, UF cable circuit is buried from a dwelling unit to a detached outbuilding. The minimum depth of this cable is _____ inches.
24
Rigid Metal Conduit is installed underground in the back yard of a dwelling. What is the minimum burial dpeth required for this installation if the circuit is a 50 amp, 240 volt load using type UF conductors installed in the RMC?
6
What is the minimum length of free conductor emerging from a cable sheath, required in an outlet box for splicing?
6 inches
Where portions of a raceway are known to be subjected to different temperatures and where condensation is known to be a problem, the raceway or sleeve shall be filled with ____ to prevent the circulation of warm air to a colder section of the raceway.
An approved material
All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors shall be________.
Contained within the same raceway
Where nonmetallic cables, such as Romex, are installed through factory or field punched holes in metal framing members, the cable shall be:
Protected by bushings or grommets securely fastened before installation of the cable
Where no box is used, ____ shall be provided on the end of a conduit to protect a cable from abrasion where the conduit is used to provide the protection against physical damage.
a fitting
Metal raceways shall not be supported, terminated, or connected by welding to the raceway unless ___ or otherwise specifically permitted to be in the Code.
specifically designed to be
