UNEC 110

Connection by means of wire-binding screws, studs, and nuts having upturned lugs or the equivalent shall be permitted for _____ AWG or smaller conductors.

10 110.14(A)

The minimum working space on a circuit for equipment operating at 120 volts-to-ground, with exposed live parts on one side and no live or grounded parts on the other side of the working space, is _____ ft.

3 110.26(A)(1) and Table 110.26(A)(1), Condition 1

The term "rainproof" is typically used in conjunction with enclosure type(s) _____.

3 Table 110.28 Note 1

Conductor ampacity shall be determined using the _____ column of Table 310.15(B)(16) for circuits rated 100A or less or marked for 14 AWG through 1 AWG conductors

60

Service equipment labeling in other than dwelling units shall not be required if an arc-flash label is applied in accordance with _____ industry practice.

acceptable 110.16(B) Ex

Internal parts of electrical equipment, including _____, shall not be damaged or contaminated by foreign materials such as paint, plaster, cleaners, abrasives, or corrosive residues.

all of these 110.12(B)

NFPA 70E, Standard for Electrical Safety in the Workplace, provides guidance, such as determining severity of potential exposure, planning safe work practices, arc-flash labeling, and selecting _____.

coordinated overcurrent protective devices

Concrete, brick, or tile walls are considered _____, as applied to working space requirements.

grounded 110.26(A)(1) and Table 110.26(A)(1), Condition 2

Conductor terminal and splicing devices shall be _____ for the conductor material and they shall be properly installed and used.

identified 110.14

Unless identified for use in the operating environment, no conductors or equipment shall be _____ having a deteriorating effect on the conductors or equipment.

located in damp or wet locations exposed to fumes, vapors, liquids, or gases exposed to excessive temperatures 110.11

When modifications to the electrical installation occur that affect the maximum available fault current at the service, the maximum available fault current shall be verified or _____ as necessary to ensure the service equipment ratings are sufficient for the maximum available fault current at the line terminals of the equipment.

recalculated 110.24(B)

Only wiring methods recognized as _____ are included in this Code.

suitable 110.8

On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded, only the conductor or busbar having the higher phase voltage-to-ground shall be durably and permanently marked by an outer finish that is _____ in color.

orange 110.15

Where equipment operating at 1,000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, and where equipment is installed above a lay-in ceiling, there shall be an opening not smaller than _____.

22 in. x 22 in. 110.26(A)(4)(a)

A minimum working space depth of _____ ft to live parts of equipment operating at 277 volts-to-ground is required where there are exposed live parts on one side and no live or grounded parts on the other side.

3 110.26(A)(1) and table 110.26(A)(1), condition 1

The working space in front of the electric equipment shall not be less than _____ in. wide, or the width of the equipment, whichever is greater.

30 110.26(A)(2)

The minimum working space on a circuit for equipment operating at 750 volts-to-ground, with exposed live parts on one side and grounded parts on the other side of the working space, is _____ ft.

4 110.26(A)(1) and Table 110.26(A)(1), Condition 2

The required working space for access to live parts of equipment operating at 300 volts-to-ground, where there are exposed live parts on both sides of the workspace is _____ ft.

4 110.26(A)(1) and Table 110.26(A)(1), Condition 3

The dedicated equipment space for electrical equipment that is required for panelboards installed indoors is measured from the floor to a height of _____ ft above the equipment, or to the structural ceiling, whichever is lower.

6 110.26(E)(1)(a)

Where equipment operating at 1,000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, all enclosure doors or hinged panels shall be capable of opening a minimum of _____ degrees.

90 110.26(A)(4)(c)

Field markings of maximum available fault current at a service are not required in industrial installations where conditions of maintenance and supervision ensure that only qualified persons service the equipment.

True

Some cleaning and lubricating compounds can cause severe deterioration of many plastic materials used for insulating and structural applications in equipment.

True 110.11 Note 2

Field markings of maximum available fault current at a service are not required in industrial installations where conditions of maintenance and supervision ensure that only qualified persons service the equipment.

True 110.24(B) Ex

Where equipment operating at 1,000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, the space in front of the enclosure shall comply with the depth requirements of Table 110.26(A)(1).

True 110.26(A)(4)(d)

For indoor installations, piping, ducts, leak protection apparatus, or other equipment foreign to the electrical installation shall not be installed in the dedicated space above a panelboard or switchboard.

True 110.26(E)(1)(a)

The dedicated space above a panelboard extends to a dropped or suspended ceiling, which is considered a structural ceiling.

True 110.26(E)(1)(d)

Where caution, warning, or danger signs or labels are required by this Code, the label marking shall warn of the hazards using effective _____.

any combination of words, colors, or symbols 110.21(B)

Where a tightening torque is indicated as a numeric value on equipment or in installation instructions provided by the manufacturer, a(n) _____ torque tool shall be used to achieve the indicated torque value, unless the equipment manufacturer has provided installation instructions for an alternative method of achieving the required torque.

calibrated 110.14(D)

Live parts operating at 50V to 1,000V, nominal shall be guarded by being _____.

located in a room accessible only to qualified persons located on a balcony accessible only to qualified persons elevated 8 ft or more above the floor or other working surface for 50V to 300V between ungrounded conductors 110.27(A)(1), (3), and (4)

Acceptable industry practices for equipment labeling are described in NFPA 70E, Standard for Electrical Safety in the Workplace. This standard provides specific criteria for developing arc-flash labels for equipment that provides _____, and so forth.

nominal system voltage and incident energy levels arc-flash boundaries minimum required levels of personal protective equipment 110.16(B) Note 3

The _____ of a circuit to be protected shall be selected and coordinated to permit the circuit protective devices to clear a fault without extensive damage to the electrical equipment of the circuit.

overcurrent devices total circuit impedance equipment short-circuit current ratings 110.10

Where required by the Code, markings or labels on all electrical equipment shall contain voltage, current, wattage, or other ratings and the marking or label shall be of sufficient durability to withstand _____.

the environment involved 110.21(A)(1)

Each disconnecting means shall be legibly marked to indicate its purpose unless located and arranged so _____.

the purpose is evident 110.22(A)