Which statement is most accurate concerning NFPA 70E Chapter 2?

The neutral conductor of a solidly grounded system greater than 1,000 volts generally has to be insulated unless a bare neutral conductor is in accordance with which of the following conditions?

Which statement is false?

The minimum distance between raceways entering the same enclosure where splices are made is ______ times the trade size of the largest raceway:

The ? installed for a separately derived system is required to remain within the enclosure where it originates.

A stand-alone generator is a separately derived system that is ? to be grounded when the system supplied by the generator is 120/240 volts, single-phase, 3-wire and the neutral is used as a circuit conductor.

Autotransformer reduced-voltage motor starting can be used with ? three phase motor.

Which of the following best describes the definition of a tap conductor?

Which print(s) in a set of residential blueprints will the electrical worker probably concentrate on for electrical information?

Metal parts and equipment of signs and outline lighting systems must be bonded together and to the associated transformer or power-supply ? of the branch circuit or feeder supplying the sign or outline lighting system.

The state of the electrical equipment considering the manufacturers’ instructions, manufacturers’ recommendations, and applicable industry codes, standards, and recommended practices” is the definition for ? .

There are five different common overcurrent protection trip types that a circuit breaker may incorporate. Which type is intended under fault current conditions to open a circuit breaker as fast as it can? The exact speed depends on the design. This trip can be fixed or adjustable.

The voltage rating of a fuse or circuit breaker must be ? the system voltage rating to assure the overcurrent protective device can properly and safely interrupt arcing internal to the overcurrent device during an overcurrent interruption.

Where an intersystem bonding termination is not present for use at an existing building or structure, an IBT can be installed or the grounding for a communications system and equipment can be accomplished by connection to all but which of the following?

? the secondary of a drive isolation transformer reduces common-mode noise coupling from primary to secondary side of the transformer.

Overcurrent protective devices used on motor circuits and transformer primary circuits must permit ? for a period of time without opening (nuisance trip

Branch circuit conductors for information technology equipment must have an ampacity not less than _____ of the total load connected:

Medium- and high-voltage cables above ? are generally required to be shielded and this shielding is usually in the form of either a conductive tape or stranded conductors.

The maximum current setting for Service Disconnect GFPE is ? , and the maximum time delay for operation is ? for ground-fault currents equal to or greater than 3,000 amperes.

All requirements of Article 130 shall apply whether an incident energy analysis is completed or if Table 130.7(C)(15)(a), Table 130.7(C)(15)(b), and Table 130.7(C)(15)(c) are used in lieu of an incident energy analysis.

When using a time-current curve, typically the horizontal axis is the ? and the vertical axis ? .

NFPA 70E Chapter 1 applies ? to electrical safety in the workplace. Chapter 2 addresses safety-related ? requirements.

For the purposes of using the arc flash PPE category method to select PPE, each different type of OCPD, whether MCCB, ICCB, LVPCB, or a current-limiting fuse, has a unique typical fault clearing time in the Informational Note to Table 130.7(C)(15)(a).

? are a common source of common-mode noise.

Where a separately derived system source is installed outside a building or structure served by the system, a grounding electrode connection ? location to one or more electrodes in compliance with Section 250.50.

Which of the following is not a separately derived system?

How many #12 awg conductors can fit be installed in a box trade size 4x11/2 square if four #8 awg conductors are already installed:

Portable cord-connected signs shall not be required to be connected to a branch circuit equipment grounding conductor where protected by a system of ? or its equivalent.

Any portion of electrical wiring that is below the surface of a class 1, division 1 or a class 1, division 2 location shall be sealed within ______ft of the point of emergence above grade.

If a fault current exceeds the capability of the OCPD to interrupt, the OCPD may ? .

Which NEC table requires the 121/2% rule for sizing purposes when the size of the largest ungrounded conductor exceeds 1,100 kcmil copper or 1,750 kcmil aluminum or copper-clad aluminum?

A(n) ? is a reactor used to reduce common-mode noise current generated by the rapid switching of a motor drive or a signaling device.

If an electrical system is grounded, ? conductor(s) of the system is connected to the Earth.

The requirements for ? have increased significantly over the years and resulted in reduced shock and electrocutions in the locations in which they are installed.

Ground-fault circuit interrupters operate (open the circuit) when the current reaches a value of ? .

When using the arc flash PPE category method (for AC), the fault clearing time has to be equal or less than the fault clearing time parameter value for the type of equipment to be worked on in Table 130.7(C)(15)(a).

Energized work is generally prohibited. Such work is permitted under which of the following conditions? I. For energized electrical conductors and circuit parts that operate at less than 50 volts, where the capacity of the source and any overcurrent protection between the energy source and the worker are considered and it is determined that there will be no increased exposure to electrical burns or to explosion due to electric arcs. II. Where the employer can demonstrate that deenergizing introduces additional hazards or increased risk. III. Where the employer can demonstrate that the task to be performed is infeasible in a deenergized state due to equipment design or operational limitations. IV. Where the employer can demonstrate that the task would take longer to perform in a deenergized state.

NFPA 70E Informative Annex ? , Safety-Related Design Requirements, stresses the importance of facility owners having risk assessments performed during the design phase.

Where an ungrounded separately derived system (dry-type transformer) is installed, a(n) ? shall be installed from the source enclosure to the first system overcurrent device enclosure.

If there is a conflict between the prints and the specifications, clarification should not be sought from the ? .

NFPA 70E 110.1(C) requires an employer’s electrical safety program to include ? electrical equipment and systems.

If the largest ungrounded conductor from a separately derived system is 750 kcmil copper, what is the minimum size required for the required grounding electrode conductor that is run to the structural metal building frame electrode?

Incident energy is defined as the amount of thermal energy impressed on a surface, at a certain distance from the source, generated during an electrical arc event. Incident energy is typically expressed in ? .

____ 10 AWG THHN conductors are permitted in 3/4 in EMT:

Specifications should be consulted ? the print reading process.

The load power for a buck-boost transformer that boosts the source by 30 V at a current of 50 A is ? kVA.

The grounding electrode conductor or bonding conductor installed for a communications system must meet all but which of the following requirements?

Electrical equipment such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers that are in other than dwelling units, and that are likely to require examination, adjustment, servicing, or maintenance while energized, must generally be field marked with a label. Which of the following choices includes information that must be contained on the label where a label is required? I. The arc flash boundary II. The available incident energy and the corresponding working distance or the arc flash PPE category for the equipment III. The date the label was installed IV. The minimum arc rating of clothing V. The nominal system voltage VI. The site-specific level of PPE

Single receptacles that provide shore power for boats must be rated not less than ____:

A drive isolation transformer is designed with additional ? to reduce power quality problems associated with nonlinear loads.

An OCPD category typically permitted to protect control circuits, luminaires, and appliances but not permitted to be used as a substitute for the required branch-circuit overcurrent protective devices or in place of the required branch-circuit protection best describes ? overcurrent protection.

Only ? persons shall be permitted to work on electrical conductors or circuit parts that have not been put into an electrically safe work condition.

According to NFPA 70E in the Informational Note to Table130.7(C)(15)(a), the typical fault clearing time for molded case circuit breakers is ? .

If a pole-mounted electric sign is connected to a ground rod electrode, this electrode is addressed by the NEC as a(n) ? grounding electrode.

Article ? covers electrical safety requirements for the practical safeguarding of employees while working with exposed stationary storage batteries that exceed 50 volts, nominal.

Which NEC chapter provides grounding and bonding requirements for communications systems installed using fiber optic cables?

Which statement is false?

Where structural metal framing or metal water piping systems exist in the area served by a separately derived system are bonded to a separately derived system, each required bonding jumper shall be sized in accordance with ? .

The schedule which lists details relating to circuits, breakers, and the main disconnect is the ? schedule.

Electrical maintenance is only about minimizing costly breakdowns and unplanned outages.

For a separately derived system, where a busbar is used for connections of the grounding electrode conductor taps to a common grounding electrode conductor, the busbar must be at least how long?

The ampacity of the conductors from the Generator windings to the first distribution over-current protection device shall not be less than ______ of the nameplate current rating of the Generator:

Electrical continuity of non–current-carrying metal parts of equipment, raceways, and other enclosures in any hazardous (classified) location, ? , must be ensured by any of the bonding methods specified in 250.92(B)(2) through (B)(4), whether or not equipment grounding conductors of the wire type are installed.

Any wiring method used to supply a pool pump motor for a permanently installed pool is required to contain a(n) ? equipment grounding conductor sized in accordance with 250.122 but not smaller than 12 AWG.

Three-hundred-volt cartridge fuses are permitted on single-phase line-to-neutral circuits supplied from 3-phase, 4-wire solidly grounded neutral source where the line-to-neutral voltage does not exceed ? .

Where installed in a single raceway or as overhead conductors, what NEC table must be used to establish the minimum size for the grounded conductor of an AC service?

Which of the following requires ground fault protection of equipment (GFPE) systems to be performance tested when first installed on site?

The bonding conductor for an equipotential plane in an agricultural building must be connected to wire mesh or other conductive elements and shall be by pressure connectors or clamps made of which of the following material?

Where the common grounding electrode conductor method is used for multiple separately derived systems, the grounding electrode conductor tap must connect to the system at the same location (enclosure) that the grounded conductor and ? is installed.

In which set of prints would you most likely find a machine wiring diagram?

Where the transfer equipment for a generator switches the ? supplied by the generator, the generator is a separately derived system that must be grounded in accordance with 250.30(A)

Motor circuit protectors (MCPs) are devices that have a(n) ? only and are intended for only short-circuit and ground- fault protection for motor branch circuits.

An unqualified person is permitted to cross the restricted approach boundary under which of the following conditions?

? is a type of electromagnetic interference induced on power or communication lines.

The polarity of the voltage that causes current to flow from H1 to H2 in the primary results in current flow from ? in the secondary.

Where GFPE is installed in service equipment as part of a new construction project, which of the following is not a requirement of the NEC?

The grounded conductor of a medium voltage 3-phase, 3-wire corner-ground system shall be sized not less than the ? .

The following items are commonly found on commercial and industrial prints. Which item would least likely be found on a set of residential prints as well?

A commercial or industrial drawing that shows conduit size, number of conductors, panel references, and how the feeders are run is called the ? .

Which of the following is a termination device that provides a means for connecting bonding conductors for communications systems to the grounding electrode system?

What is the largest size grounding electrode conductor required for a PV system that has a solidly grounded DC system?

A(n) ? is a system in which a grounding impedance, usually a resistor, limits the ground-fault current to a low value during a first phase-to-ground fault event.

Autotransformer reduced-voltage motor starting reduces the applied motor voltage to ? of the line voltage when starting.

The requirements in Articles 500 through 506 amend or modify the general rules of the Code to ensure the integrity of electrical installations and to minimize the possibility of electrical equipment being a(n) ? in volatile or potentially explosive atmospheres.

Isolated grounding receptacles installed in patient care spaces outside a patient care vicinity shall be installed in accordance with all but which of the following?

NM cable run horizontally through the framing members is considered supported if secured within ______ of the termination:

Which NEC article contains specific rules related to grounding and bonding requirements for electric signs and light-emitting diode (LED) sign illumination systems?

Connected to ground without inserting any resistor or impedance device best defines which of the following systems?

The specifications for a set of industrial prints contain information and important details

If an OCPD has not been maintained or has been improperly maintained, it may take longer to clear an arcing fault current than its specified published clearing time. As a consequence, the actual arc flash incident ? .

Which section of a set of commercial or industrial blueprints gives specific information about mounting a transformer on a column?

If an Electrical Worker is working on energized equipment when justified and wearing arc flash PPE per NFPA 70E 130.5 incident energy analysis, and if the overcurrent protective device fails to operate as designed, or does not operate, the incident energy that the Electrical Worker will be exposed to may be much higher than calculated.

Box trade size 4x21/8 square has a volume of ______ in2:

Buck-boost transformer should not be used to create a 240V/120 V single-phase service fed by a 208Y/120 V 3-phase, 4-wire source. If this is done, two ? would exist on the same circuit.

Which division of project specifications covers the electrical installations?

Current-limiting OPCDs provide superior fault current protection by reducing ? on conductors and equipment during short-circuit conditions