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Exam
| Question | Answer |
|---|---|
| EMT is often referred to as "thin-wall conduit" due to it having a wall thickness that is about ___ % the thickness of rigid metal conduit. | 40 |
| ___ is heavy-duty galvanized metallic tube used to route service entrance conductors. | Rigid metal conduit (RMC) |
| Standard trade sizes of RMC are available in 1/2" to 6" diameters at a standard length of ___'. | 10 |
| The 3/8" trade size of FMC can be used for lengths not more than ___'. | 6 |
| The two types of PVC are Schedule ___ (thin wall) and Schedule 80 (heavy wall). | 40 |
| Each bundle of EMT contains ten lengths of conduit, each ___' long. | 10 |
| Removing the rough edges of conduit is called "___." | deburring |
| The five main types of conduit bends are ___ bends. | 45º, 90º, back-to-back, offset, and saddle |
| ___ is an adjustment made to a measurement when bending conduit. | Take-up |
| A(n) ___ is a double conduit bend with two equal angles bent in opposite directions in the same plane in a conduit run. | offset |
| A{n) ___ bend consists of three or four bends that are used to bypass obstructions and return the conduit to its original level. | saddle |
| The NEC® requires that EMT be installed as a complete system and securely fastened in place within ___' of each outlet box, junction box, cabinet, or fitting. | 3 |
| Unlike metallic and nonmetallic cable, conduit must be joined together using conduit couplings when a run exceeds ___' in length. | 10 |
| A ___ is a chemical agent that cleans and softens a surface and allows solvent cement to penetrate more effectively into the surface. | primer |
| A_ is a wet or dry compound that is applied to the exterior of wires to allow them to slide easier. | lubricant |
| ___ receptacles are constructed with a long (neutral) slot, a short (hot) slot, and a U-shaped (ground) slot. | Standard |
| ___ is unwanted signals that are present on a power line. | Electrical noise |
| A receptacle that is operating correctly has a nominal voltage level of ___ V between the hot slot to the neutral slot or the hot slot to the ground slot. | 120 |
| A GFCI trips if there is an imbalance of at least milliamps (mA). | 6 |
| A 250 VAC receptacle can have two configurations designed at a ___ current rating. | 15 A or 20 A |
| DC charging ports can have a maximum amperage rate of ___ A or less. | 5 |
| A(n) ___ receptacle is a receptacle controlled remotely by a control device using specific wireless signals. | smart |
| Most receptacles found in a residence include ___ grounding types. | 15 A and 20 A, double-pole, three-wire |
| A(n) ___ box is an enclosure designed too house a termination of electrical wires. | junction |
| A ___ is a round indentation stamped on a receptacle box that allows for quick installation of fittings to secure cables, conduit, or metallic cable. | knockout |
| In residential construction, wall studs and ceiling joists are laid out with ___" on-center (OC) spacing. | 16 |
| A is an upright wood member that extends from the bottom to the top plates of a framed wall. | stud |
| A(n) ___ is a horizontal member between studs that slows down the passage of flames in case the structure catches fire. | fire block |
| Receptacles located outdoors and exposed to weather require which provide coverage of the faceplate. | weatherproof covers |
| The UL® label and the CSA label are the two standard organization labels found on the ___ of switches. | metallic mounting straps |
| Black ( or the darker colored screw) indicates the ___ terminal screw of a switch. | common |
| A ___ is the number of completely separate circuits into which a switch can feed current. | pole |
| A ___ circuit allows a light to be controlled by a single-pole switch from a remote location. | switch loop |
| Four terminals can be identif1ed on a three-way switch: the ___ terminals. | common, traveler A, traveler B, and ground |
| A circuit with two three-way switches and one four-way switch has ___ possible combinations to power a light. | four |
| Double-pole switches are designed to control ___ loads. | two separate 120 V |
| A ___ switch is an electrical control device that is used to control light brightness by adjusting the voltage level applied to the light. | dimmer |
| A(n) ___ operates by turning a light on or off automatically based on presence in the space. | occupancy sensor |
| For fire safety, NIC-rated fixtures must have at least ___" of clearance around the fixture (including the wiring box) from thermal insulation. | 3 |
| A ___ is an isometric drawing of a branch circuit in a dwelling | construction layout |
| Typically, circuit breakers for residential use are rated at ___. | 15 A or 20 A |
| In a bathroom branch circuit, a(n) ___ has to be the first device installed to protect all other device during a ground fault. | GFCI |
| In a kitchen, GFCI receptacles are required every ___' of continuous counter space that is 12" wide or greater. | 4 |
| The single-pole and three-way switch circuits in a garage branch circuit are protected by a(n) ___, which is supplied power first. | GFCI |
| The two methods used to provide electrical service to the meter of a residence are service ___. | drop and lateral |
| The ___ is where the utility's maintenance responsibility ends and the homeowner's responsibility begins. | service point |
| A service lateral entrance may use a ___ to enclose the service wires and to provide a location for the meter socket and meter. | cabinet |
| The service panel should be located as close to the ___ as possible to avoid costly wire runs to major appliances. | kitchen |
| A service entrance for a single-family dwelling requires a minimum ___ A capability. | 100 |
| Service wires must be at least ___' f rom the bottom and sides of a window. | 3 |
| A ___ is a cable that has a bare conductor wound around the insulated conductors and is often used for service drops. | service entrance cable |
| The service panel circuit breaker protects the subpanel from ___. | overloading |
| The service conductors not under the exclusive control of the utility must be buried ___" below ground and must have their location identified by a warning ribbon placed in the trench above the underground cable installation. | 18 |
| To avoid an are flash, ___ when service wires are connected. | all circuit breakers are turned off |
| A smart meter is a meter that uses two-way digital communication to enable a utility to securely collect information regarding the ___. | electrical consumption (usage) of a consumer |
| A(n) ___ is the amount of electricity used in an hour. | kilowatt-hour (kWh) |
| A(n) ___ system consists of three interconnected networks that include home area networks (HANs), neighborhood area networks (NANs), and wide area networks (WANs). | advanced metering infrastructure (AMI) |
| A(n) ___ is a device that primarily functions to serve as the collection point for several smart meters within a NAN. | concentrator |
| Mesh networks can extend the range of a network by using ___. | repeaters |
| An automatic circuit breaker takes 20 cycles to ___ sec to close. | 5 |
| A power ___ is a short or long-term sustained loss of electric power. | outage |
| A ___ is a surge suppressor connected to the main service panel that diverts heavy electrical surges into the grounding system. | whole-house panel protector |
| ___ are used to maintain the operation of critical loads such as computer systems, medical equipment, and sensitive electronics during short interruptions in the primary power source. | Uninterruptible power supplies (UPSs) |
| Standby UPSs are typically used for small applications that are less than ___ VA. | 600 |
Created by:
colejmack99