REY 151 REVIEW
When computing box fill, all external clamps count as ________ conductor(s) of the largest conductor in the box.
0
If you are doing service entrance calculations 1 watt equals ____________.
1 volt-ampere
Holes drilled in framing members for electrical wiring must have an __________ inch from the edge of the hole to the nearest edge of the framing member.
1-1/4
When computing box fill, five equipment grounding conductors are counted as ___________ conductor(s) of the largest EGC in the box.
1.25
The 2020 NEC states that EMT must be supported at least _______ feet along the run.
10
What is the cubic inch volume of 3x2x2 metal device box?
10 cu-in
Hallways of _________ or more in length must have at least one receptacle outlet.
10 feet
EMT must be supported at intervals not exceeding ______ feet and securely fastened within ______ feet of termination points.
10, 3
If type NM or Type SER cable is used for feeder cable supplying power to a sub-panel, the cables must be supported within _____ inches of both the main panel and the sub-panel.
12
Service drop conductors must have a vertical clearance of at least ______ feet over a residential driveway.
12
Warning tape is must be installed at least _______ inches above the buried conductor.
12
NM cable must be secured within ______ inches of all electrical boxes except a nonmetallic _____ ______ box.
12, single gang
A double pole switch can be used to control two __________ circuits.
120 volt
The load for each SABC is calculated at ___________ VA each.
1500
Six inch RMC has a metric designator of _________.
155
What is the total cubic inch volume taking up by 4-12 AWG conductors and 5-14 AWG conductors?
19 cubic inch
A residential service mast must have a minimum size of _________ inches.
2
A ground ring used as a grounding electrode, must be at least ________ AWG copper and at least ________ feet long.
2, 20
Countertop receptacles shall not be installed more than _______ inches above the countertop.
20
A house with 1500sqft of habitable living space will require at least _______ 15 amp general lighting circuits.
3
URD cable consists of ______ or _______ ______ conductors combined together in a single cable.
3, 4, USE
The unit load used to calculate the minimum number of general lighting branch circuits in a dwelling unit is ___________.
3-VA/sqft
When only two conductors are installed in a raceway, the raceway cannot be filled to more than _________ of the conductors cross sectional area.
31%
At least one receptacle outlet shall be installed in bathrooms within _______ inches of the outside edge of the sink.
36
Branch circuits larger than _______ amperes shall supply only non-lighting outlet loads.
50
Lighting fixtures weighting no more than ________ pounds are permitted by the NEC to be supported by outlet boxes.
50
Receptacles shall be installed so that no point along the floor line in any wall space is more than _________ feet, measured horizontally, from an outlet in that space.
6
A vertically mounted device box can support a lighting fixture as long as the fixture weighs no more than _____ lbs and is supported by two ________ screws
6, 6-32
The NEC requires the working space in front of a service entrance panel, must be _______ feet high, ____ inches wide and _______ feet in front of the panel.
6.5 ,30, 6
Boxes that support ceiling mounted paddle fans must be listed and and be able to support fans weighing no more than _______ lbs. Boxes that support more than 35 pounds must have the maximum weight marked on the box.
70
A 100 amp service is being fed by 2AWG copper. What is the minimum size copper grounding electrode conductor?
8 AWG copper
Motor loads not exceeding _________ % of the ampere rating of the switch at its rated voltage are permitted to be controlled by alternating current general- use snap-switches.
80
The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed _________% of the branch circuit ampere rating.
80
_______________ switch device consists of two switches on one yoke.
Combination
This type of metal raceway cannot be threaded.
EMT
Give an example of a noncoincident load.
Electric heat, Air-conditioning
The most common types of conduit bodies include _____________________.
Ells, Tees, Cees
Rigid metal must be supported at least every 8 feet. T - F
F
According to the 2020 NEC NM cable is not allowed to be installed in a raceway. True - False
False
Each looped or coiled, unbroken length of conductor at least 12 inches long which passes through a box without splice or connection, the volume allowance is 4 of the actual conductor size. True - False
False
Service entrance cable used for branch circuits is allowed to have a bare grounded conductor. T-F
False
The 2020 NEC allows a switched receptacle to control a kitchen lighting outlet. T - F
False
The 2020 NEC does not allow switch loops in 3-way switching. True-False
False
The 2020 NEC requires a minimum of 3 SABC per dwelling. T _ F
False
The NEC allows only copper conductors to be used in residential wiring. True-False
False
The NEC requires that device boxes be installed so that all nails or screws are outside the box. True-False
False
The volume allowed for a pancake box is found in NEC Table 314.16(A). T-F
False
When determining receptacle placement in residential wiring, the fixed glass section of a sliding door is not counted as wall space. T - F
False
This piece of electrical equipment is used on the outside of a residential dwelling to tie in all grounding electrode conductors.
Intersystem bonding termination
Name three reasons for using cutting oil when threading pipe __________________.
Makes cutting threads easier, Extends the life of the cutting die, Flushes away the metal shavings, Keeps the pipe cool.
If the service entrance equipment is located on the outside of the house it shall be enclosed in a ________ ______ enclosure.
NEMA 3R
__________have no ears on them and are designed to be attached directly to building framing members.
New-work boxes
Name three raceway types that can be used to protect the service entrance conductors.
RMC, PVC, IMC, & EMT
__________ is the amount that must be subtracted from a desired stub-up height so the bend will come out right.
Take - up
Name the two types of saddle bends.
Three point and four point bends.
The 2020 NEC allows Class 2 control wiring to be supported by the raceway that supplies power to the equipment that it controls. True- False
True
The securing and supporting requirements for Type FMC are the same as those for Type NM cable.. True - False
True
What type of NM cable is used underground to feed an outside pole light?
UF
When installing a service mast the porcelain standoff is used to ____________.
attach the service drop cable
This type of raceway bend has two 90 degree bends with a straight length between them.
back-to-back 90
Floor receptacles require a
box listed for that use
A _________ _______ is used to attach the service drop to the side of the house in an overhead service installation.
cable hook
An intentional loop put in the service entrance conductors that extend out from the weather head is called a _____ _______.
drip loop
The 2020 NEC states that the knockout on the back of a loadcenter may not be used to install a homerun. T-F
false
The NEC allows a single insulated conductor to be taped to the outside of a 2-conductor NM cable to make it a three conductor cable. True-_False
false
The grounding electrode conductor must be connected somewhere on the first ______ feet of metal water pipe where it enters the building.
five
Device boxes installed in combustible walls the edge of the box must be _____ the finished surface.
flush
The branch circuit rating is based on the size of the _______ or __________ ______.
fuse, circuit breaker
What color insulation is not acceptable for an ungrounded conductor?
green or white
Name one item that counts as one conductor when computing box fill.
internal cable clamp, 4 or less EGC
Devices boxes or a lighting outlet box can be used has a __________ box.
junction
This circuit consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has equal voltage between it and each ungrounded conductor of the circuit. This circuit is called a _____ _____.
multiwire circuit.
Kitchen Lighting circuits
not allowed on SABC
When computing box fill, each 14 AWG lighting fixture wire counts as _______ conductor.
one
A ______ is a short length of wire used in electrical boxes to make connections to device terminals.
pigtail, jumper
Individual wall space of two feet or more are considered usable for the location of a lamp or appliance and a ________ _______ is required.
receptacle outlet
What type of NM electrical box is used for lighting outlets in residential wiring?
round NM boxes
NM cable installed in an unfinished basement, can be installed through holes drilled in joists or installed on _____ _____.
running boards
Inductive heating is caused when current conductors of the same circuit are brought through ______________________.
separate holes in a metal box or enclosure
A common wiring method used on the outside of a house to provide electric power from the point of attachment to the meter socket is called ________.
service entrance cable
The point of connection between the wiring of the electric utility and the house wiring is called the _______ ______.
service point
A _____ _______ is used to cover the hole in the side of the house where the service entrance cable enters the house.
sill plate
Appliance receptacle outlets installed in a dwelling unit for specific appliances, shall be installed within ________ feet of the intended location of the appliance.
six
How many service disconnecting means can be connected to one set of service entrance conductors?
six
Interior stairway lighting must be controlled by a wall switch placed at the top and bottom of the stairway when the stairway has _______ or more steps.
six
Receptacles installed below a countertop or work surface shall not be located where the countertop or work surface extends more than _________ "beyond its support base.
six
The 2020 NEC requires at least ________ inches of free conductor in electrical device boxes for connection to switches and receptacles.
six
According to Underwriters Laboratories, lengths of FMC longer than _________ have not been judged suitable for equipment grounding purposes.
six feet
This piece of electrical equipment provides an easy way to support multiple risers on one utility pole.
standoff bracket
The neutral and the grounding bus must be separated in a
sub-panel
Expansion fittings are generally provided in exposed runs of Type PVC where ___________.
the run is subject to large temperature variations during or after installation.
The general rule for support of ENT is, that it must be supported at intervals not exceeding ________feet.
three
The brass colored terminals on a three way switch are called the _________ terminals.
traveler
This type of cable is normally used as the service drop cable for a 120/240-volt residential service.
triplex
A single-pole switch, four-way switch and an AFCI receptacle count as ________ conductor(s) when computing box fill.
two
To control a lighting outlet from four locations, a circuit requires _________.
two- three way and two four way switches
Voltage that pushes the house electrical load current through the wires from the utility transformer, to the service panel, and back to the transformer is called _____________.
voltage drop
A fitting installed on service entrance cable to keep water from entering the electrical equipment is called a _________.
weatherhead
When does the NEC require NM cable to be protected when it is installed through a bored in a framing member.
when there is less than 1-1/4" between the edge of the framing member and the edge of the hole.
Name at least two descriptions that need to be marked on electrical cable.
wire size, max rated voltage, proper type letter for the type of cable