Residential Wiring final

True

A component plan is a group of electrical component schedules that state the required locations for receptacles, lights, and switches.

solar photovoltaic (PV) panels

An environmentally responsible and energy-efficient residence may include the addition of ___.

False

An equipment grounding protection plan is the use of proper grounding methods and devices designed to suppress power surges and transient voltages to protect electrical and electronic circuits.

series-wound

A(n) ___ generator is a generator that has its field windings connected in series with the armature and the external circuit (load).

symbol

A(n) ___ is a graphic representation of a device, component, or object on a print.

heat pump

A(n) ___ is a mechanical compression refrigeration system containing devices and controls that reverse the flow of refrigerant to move heat from one area to another.

smart home

A(n) ___ is a residence that contains equipment, appliances, and software that are designed to provide security, energy management, and convenience.

microgrid

A(n) ___ is a small local electrical network or grid that can operate completely separate from the main electrical grid.

transformer

A(n) ___ is an electric device that uses electromagnetism to change (step up or step down) AC voltage from one level to another.

uninterruptible power supply system (UPS)

A(n) ___ is an electrical storage device that provides stable and reliable power during fluctuations or failures of the primary power source.

electrical floor

A(n) ___ plan is a print that shows all of the power circuits for a specific floor of a residence.

transient

A(n) ___ voltage is a temporary, undesirable voltage in an electrical system.

False

The utility service wires are connected by the utility until the service panel inside the residence is properly secured.

listed

A UPS must be UL® ___.

secondary

A ___ cell is a cell that can be recharged.

compound-wound

A ___ generator is a generator that includes series and shunt field windings.

wind turbine

A ___ is a power generation system that converts the kinetic energy of wind into mechanical energy, which is used to rotate a generator that produces electrical energy.

smart grid

A ___ is an electrical grid in which electricity is delivered and monitored from a power source to an end user.

service entrance

A ___ is the wires installed between the meter fitting (socket) and the disconnecting means (main breaker, fuse box, or breaker panel) inside a dwelling.

wiring

A ___ plan is an electrical floor plan that indicates the type, placement, and connection of all electrical devices required to wire an electrical circuit.

Peaker

A ___ power plant is a back-up power plant that is reserved to run only during times of increased demand.

DC

A ___ power system could provide power directly to consumer electronics, LED lights, and EV charging stations with minimum energy loss.

True

A battery is a group of connected electrochemical cells.

False

A battery power system is a network of connected batteries that store electricity, typically generated from renewable energy sources, for use at a later time.

True

A fuel cell will continue to provide electrical power as long as it is supplied with fuel.

True

A power outage is a short- or long-term sustained loss of electric power.

True

A service lateral entrance may use a cabinet to enclose the service wires and to provide a location for the meter socket and meter.

True

A shunt-wound generator is used where the load is constant, such as for lighting fixtures.

120

A single-pole circuit breaker only furnishes one ___ V circuit.

True

A watt is a unit of power used to quantify the rate of energy transfer produced by a current of one ampere across a potential difference of one volt.

True

After the service entrance has been completed and inspected, the utility company makes the final connection and installs a meter in the meter socket.

False

Air-cooled generators can be used to provide continuous power.

True

An ATS is installed indoors on a firm and sturdy supporting structure.

False

The voltage produced by a generator does not depend on the strength of the magnetic field nor the rotational speed of the rotor.

False

Audible devices are typically used in applications designed to draw attention to when conditions are normal.

True

Back-feeding (islanding) is the flow of electrical energy in the reverse direction from its normal direction of flow.

False

Back-up generators normally supply power to small and large loads during a power outage.

True

Batteries can produce toxic and explosive mixtures of gases.

set the auto/off/manual switch of the generator to the OFF position

Before a battery in a generator is installed and connected, first ___.

False

Cells and batteries are connected in series to make a greater current available than the current that can be provided by a single cell or battery.

electrons

Certain ions have excess ___ and are negatively charged.

False

Component plans are essential when performing wiring installations because they indicate the type of switch, cable/wire, and receptacle used for each circuit in a room.

safety

Cost, convenience, and ___ must be taken into consideration when a service entrance is placed.

False

Current is abbreviated with the letter C and is measured in amperes.

True

DC generators operate on the principle that when a coil of wire is rotated in a magnetic field, a voltage is induced in the coil.

False

DC is typically transmitted at high voltages to allow for transmission at long distances.

True

Distribution lines distribute power at a relatively lower voltage than transmission lines, which allows for smaller equipment and a smaller footprint to distribute power throughout a residential area.

True

Electrical floor plans must provide enough information to indicate the proper way to complete a job and must follow NEC® standards for local and state compliances.

False

Electricity is a form of energy where electrons move from the inner shell of one atom to the outer shell of another atom when an electromotive force (EMF) is applied to a material.

False

Electronic devices use DC and must convert the available AC into DC through adapters, resulting in losses of as much as 60%.

friction

Energy is lost through the heat and ___ of an operating electric motor.

True

Even when a device is off, small leakage current reduces the overall efficiency of a system.

True

For voltage, both abbreviations E and V are often used interchangeably and are equally acceptable.

energy

Fuel cells are different from batteries in that they produce but do not store ___.

frost line

Heat contained within the earth is maintained at a constant temperature (50°F to 70°F) in the soil and rocks below the ___.

True

High-power USB cables can transfer up to 100 W of DC power.

False

If electrolyte contacts the eyes, flush immediately with water for 10 min to 15 min and do not get medical attention.

120

In three-phase generators, the three separate coils are spaced ___ electrical degrees apart.

True

Lighting is the most common type of installation and application used in residential electricity distribution.

cells

Photovoltaic (PV) systems use silicon wafers, called "___," that are sensitive to light and produce a small direct current when exposed to light.

False

Series-wound generators have good voltage regulation.

True

Service entrance caps and associated hardware are shaped to accept oval service cables.

True

Power quality refers to the consistency of electric voltage.

False

Standby UPSs are also known as "off-line UPSs" because under normal conditions they pass utility power through to the input side and the inverter does not operate.

False

Red and white wires are used for hot or live wires, and a black wire is used as the neutral wire.

heat

The transmission and distribution of electricity typically results in losses of as much as 6% to 7% of the generated electrical power annually, mostly attributed to ___.

True

Smart grid technology can be used to gather information from remote sensors and use energy harvesting to power these sensors remotely.

True

Solar thermal energy systems decrease the demand for electricity for temperature control and hot water heating.

True

Solar thermal systems, geothermal systems, and heat pumps are all more efficient at heating a residence than using electricity.

True

Sources of renewable energy include the sun, wind, water, solar thermal, and geothermal energy.

False

Temporary power interruptions (power outages) are commonly the result of storms, tripped circuit breakers, blown fuses, and/or damaged equipment.

liquid

The ___ electrolyte in a wet cell is usually a solution of acid in water.

efficiency

The biggest problem with small residential wind turbines is ___.

True

The most common method of safely measuring current is to use a clamp-on ammeter.

A

The formula for calculating power in watts is P = V x ___.

turbine

The generator of a hydroelectric power plant is connected to a(n) ___, which causes the generator to rotate and convert mechanical energy into electric energy.

False

The homeowner should not consult with the utility concerning future home additions, such as a pool, fence, deck, or shed, before the trench is dug for a service lateral.

True

The location of the service point can change depending on the design and configuration of a distribution system.

energy efficiency

The major reason for homeowners to consider a hybrid AC/DC microgrid is for increased ___.

False

The operating time of a battery does not depend on the load that it is powering.

False

The relationship between voltage, current, and resistance is typically visualized as a bar graph of Ohm's law.

True

The requirements for entering a utility hole are strict because it is a potentially dangerous space and should only be accessed by utility workers.

phantom

The small leakage current allowed to pass from electronic devices is often referred to as ___ power.

ohm

The standard unit of resistance is the ___, sometimes written out as a word or, more commonly, symbolized by the omega symbol.

True

Three-phase motors use the largest amount of electricity of all motors and they are also the most energy efficient.

15

To earn the Energy Star label, a residential home must be at least ___% more efficient than those built to code.

HVDC

To help integrate and control new sources of power generation, the older, traditional distribution systems are being upgraded through the addition of ___ transmission lines and new electronic monitoring equipment.

black

Two ___ wires can be used for the hot wires.

Energy Star®

___ is a US government program that mandates limits on the power consumption of electric equipment.

Photovoltaics

___ is solar energy technology that uses the unique properties of semiconductors to convert solar radiation into electricity.

Power quality

___ is the condition of incoming power to a load.

Voltage

___ is the force or electrical potential between two points.

Dots

___ may be used to indicate ground wires.

Special-purpose

___ outlets, such as receptacles used for appliances, use particular letters to designate a variation of standard equipment on an electrical floor plan.

cooling

When a heat pump is in the ___ mode, the indoor unit is the evaporator and the outdoor unit is the condenser.

False

When comparing voltage to water pressure at a closed valve, water pressure (voltage) is smallest when the valve is closed and there is no water flow (current).

National Electrical Code (NEC®)

Wind turbine systems and solar PV systems must be installed per all ___ requirements and must be equipped with proper disconnects.

False

Wind turbine systems are always off-grid (stand-alone) systems, which act independently of electrical utility grids.

Single-phase

___ AC voltage is the most commonly used voltage in a residence.

Potential

___ energy is stored energy due to position, chemical state, or physical condition.