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Article 110 covers ____________?
general requirements for the examination and approval installations and use, access to and spaces about electrical conductors and equipment, and tunnel installations.
Listed or labeled equipment shall be installed and used in accordance with any instructions included in the 1_____ or 2_____.
Throughout this Code, the 1_____ considered shall be that at which the 2______ circuit operates.
The 1_______ rating of electrical equipment shall not be 2______ _______ the nominal voltage of a circuit to which it is connected.
Conductors normally used to carry current shall be of ______ unless otherwise provided in this Code.
Where the conductor material is not specified, the material and the sizes given in this Code shall apply to ______ conductors.
The conductors and equipment required or permitted by this code shall be 1_______ only if 2________.
Conductor sizes are expressed in American Wire Gage (AWG) or in ______ _______.
Completed Wiring Installations shall be free from 1______ circuits and from 2_______ other than as required or permitted in Article 250.
Only wiring methods _____ as suitable are included in this Code.
Equipment intended to interrupt current at 1______ _______ shall have an interrupting rating sufficient for the nominal circuit voltage and the current that is available at the 2______ terminals of the equipment.
Equipment intended to interrupt current at other than 1______ ______ shall have an interrupting rating at a nominal circuit voltage sufficient for the 2________ that must be interrupted.
- 1. fault levels
- 2. current
Unless identified for use in the operating environment, no 1______ or 2______ shall be located in damp or wet locations; where exposed to gases, fumes, vapors, liquids, or other agents that have a 3______ effect on the 4_____ or 5______; or where exposed to 6_____ temperature.
- 2. equipment
- 3. deteriorating
- 4. conductors
- 5. equipment
- 6. excessive
Equipment identified only as "dry locations," "Type 1." or "indoor use only' shall be 1______
against permanent damage from the weather 2______ _______ constructions.
Electrical equipment shall be installed in a 1_____ and 2_______ manner.
Unused 1_______ or 2_______ openings in boxes, raceways, auxiliary gutters, cabinets, cutout boxes, meter socket enclosures, equipment cases, or housings shall be effectively 3_________ to afford protection substantially equivalent to the wall of the equipment.
- 1. openings
- 2. ?????
- 3. closed
Where metallic plugs or plates are used with nonmetallic enclosures, they shall be recessed at least 6 mm(______ in) from the outer surface of the enclosure.
Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces, shall not be damaged or contaminated by foreign materials such as 1_____, 2______, 3_____, 4______, or 5______ residues.
- 1. Paint
- 2. Plaster
- 3. CLeaners
- 4. abrasives
There shall be no damaged parts that may adversely affect safe operation or mechanical strength of the equipment such as parts that are 1_____; 2_____; 3______; or deteriorated by corrosion, chemical action, or overheating.
Electrical equipment shall be 1______ ______ to the surface on which it is mounted 2_______ plugs driven into holes in masonry, concrete, plaster, or similar materials 3______ _______ be used.
- 1. firmly secured
- 2. wooden
- 3. shall not
Electrical equipment provided with 1_______ openings shall be installed so that walls or other obstructions do not prevent the 2______ ______ of air through the equipment.
- 1. ventilating
- 2. free circulation
Because of different characteristics of 1_______ metals, devices such as pressure terminal or pressure splicing connectors and soldering lugs shall be 2______ identified for the material of the conductor and shall be properly installed and used.
- 1. dissimilar
- 2. identified
Conductors of 1_____ metals shall not be intermixed in a terminal or splicing connector where physical contact occurs between dissimilar conductors (such as copper and aluminum, copper and copper-clad aluminum, or aluminum and copper-clad aluminum), unless the device is 2_______ for the purpose and condition of use.
- 1. dissimilar
- 2. identified
Terminals for more than 1______ conductor and terminals used to connect 2______ shall be so 3_______.
- 1. one
- 2. aluminum
- 3. identified
Conductors shall be spliced or joined with splicing devices 1_______ for the 2_______ or by brazing, welding, or soldering with a fusible metal alloy.
Wire connectors or splicing means installed on the conductor for 1_____ ______ shall be 2______ for such use.
- 1. Direct burials
- 2. listed
The temperature rating associated with the 1_____ of a conductor shall be selected and coordinated so as not to exceed the lowest temperature rating of any 2______ termination, conductor, or device.
Conductors with the temperature ratings 1____ than specified for terminations shall be permitted to be used for 2_____ adjustment, correction, or both. This sentence is for the use of De-rating purposes only.
On a 4-wire, 1_____-_____ where the midpoint of one phase winding is grounded to supply lighting and similar loads, the conductor or busbar having the 2_____ phase voltage to ground shall be durably and permanently 3_____ by an outer finish that is 4_____ in color or by other effective means.
- 1. delta-wire
- 2. higher
- 3. marked
- 4 orange
Such 1_____ shall be placed at each point on the system where a connection is made if the 2_____ _____ is also present.
- 1. identification
- 2. ground-conductor
Switchboards, panelboards, industrial control panels, and motor control centers that are in other than 1_____ occupancies and are likely to require examination, adjustment, servicing, or maintenance while 2______ shall be 3_____ ______ to warn qualified persons of potential electric arc flash hazards.
- 1. dwelling
- 2. energized
- 3 field marked
The manufacturer's name, trademark, or other descriptive marking by which the organization responsible for the product can be identified shall be 1_____ on 2_____ _____ equipment.
- 1. placed
- 2. all electrical equipment
Other markings that indicated voltage, current, wattage, or other ratings shall be 1_____ as specified elsewhere in this 2______.
- 1. place
- 2 all ellectrical
The _____ shall be of sufficiently durable to withstand the environment involved.
Each 1____ means shall be legibly 2_____ to indicate its 3_____ unless located and arranged so the purpose is evident.
- 1. disconnecting
- 2. marked
- 3. purpose
The ______ shall be of sufficient durability to withstand the environment involved.
In Locations where electrical equipment is likely to be exposed to physical damage, 1_____ or 2____ shall be so arranged and of such strength as to 3_____ such damage.
- 1. Enclosures
- 2. Guards
- 3. Prevent
Entrances to rooms and other guarded locations that contain 1_____ _____ _____ shall be marked with conspicuous 2_____ ______ forbidding unqualified persons to enter.
- 1. Exposed Live Parts
- 2. Warning Signs
The depth of the 1____ _____ in the direction of 2____ _____ shall not be less than that specified in table 110.26(A)(1) unless the requirements of 110.26(A)(1)(a), 3______, or (A)(1)(c) are met. Distances shall be measured from the 4____ ____ ____ or from the enclosure or opening if the live parts are enclosed.
- 1. Working SPace
- 2. Live Parts
- 3. A 1 b
- 4. Exposed Live Parts
The 1_____ of the working space in front of the electric equipment shall be the width of the 2_____ or 762 mm(3____), whichever is 4____.
- 1. width
- 2. equipment
- 3. 30 inches
- 4. greater
The work space shall be 1_____ and extend from the grade, floor, or 2_____ to the height required by 110.26(E). Within the 4_____ ____
of this section, other equipment that is associated with the electrical installation and is located 5_____ or 6____ the electrical equipment shgall be permitted to extend not more than 150 mm (7_______) beyond the front of the electrical equipment.
- 1. clear 2. grade 3. Platform
- 4. height requirement
- 5. above 6 below
- 7. 6 inches
Working space required by this section 1_____ ____ be used for 2_____. When normally enclosed live parts are exposed for 4_____ or servicing, the working space, if in a pasageway or general open space shall be suitably 5_____.
- 1. Shall not
- 2. storage
- 3. normally
- 4. inspection
- 5. guarded.
44. At least 1____ ____ of sufficient area shall be provided 2_____ to working space about electrcial equipment.
The 1____ _____ of working spaces about service equipment, switchboards, panalboards, or motor control centers shall be two meters or 2_____ ft. Where the electrical equipment exceeds 2.0m or 2______ft in height, the minimum headroom shall not be less then the height of the equipment.
- 1. minimum headroom
- 2. 6
The space 1_____ to the width and 2______ of the equipment and extending from the 3____ to a height of 1.8m or 4______ft above the equipment or to the structural ceiling, whichever is lower, shall be 5____ to the electrical installation. No piping, ducts, leak protection apparatus, or other
6_____ _____ to the electrical installation shall be located in this zone.
- 1. equal 2. depth 3. floor 4. six
- 5. dedicated 6. equipment foreign
Article 200 provides requirement requirements for the following:
- 1. Identification of terminals
- 2. Grounded Conductors in premise wiring systems
- 3. Identification of Grounded conductors
Premises wiring shall not be 1_____ ______ to a supply system unless the latter contains, for any grounded conductor of the interior system, a 2______ _______ that is grounded.
- 1. Electrically connected
- 2. corresponding conductor
An 1______ grounded conductor of 2______
AWG or smaller shall be identified by a continuous 3______ or gray finish by 4______
______ white stripes on other than green insulation along its entire length.
- 1. insulated
- 2. 6 AWG
- 3. white
- 4. three continuous
An insulated grounded conductor larger that 6 AWG shall be identified by one of the following means:
1. By a continuous white or gray outer finish.
2. By three continuous white strioes along its entire length on other than green insulation.
3. At the time of installation, by a distinctive white or gray marking at its terminations. This marking shakll encircle the conductor or insulation.
Where grounded conductors of different systems are installed in the same raceway, cable, box, auxiliary gutter, or other type of enclosure, each grounded conductor shall be identified by system. Identification that distinguishes each system grounded conductor shall be permitted by one of the following means:
1) One system grounded conductor shall have an outer covering conforming to 200.6(A) or (B)
2) The grounded conductor(s) of other systems shall have a different outer covering of white or gray with a readily distinguishable colored stripe other than green running along the insulation.
3) Other and different means of identification as allowed by 206.6(A) or (B) that will distinguish each system grounded conductor.
If part of a 1_____ ______ and where the insulation is permanently 2______ to indicate its use as an ungrounded conductor, by painting or other effective means at its 3______, and at each location where the conductor is visible and 4______. Identification shall encircle the insulation and shall be a color other than white, gray, or green.
- 1. cable assembly
- 2. reidentified
- 3. termination
- 4. accessible
Where a 1_____ ______ contains an insulated conductor for a single-pole, 3-way or 4-way 2_____ ______ and the conductor with white or gray insulation or a marking of three continuous white stripes is used for the 3_____ to the switch but not as a 4______ conductor from the switch to the switched outlet. In these applications, the conductor with the white or gray insulation or with three continuous white stripes shall be 5_____ re-identified to indicate its use by painting or other effective means at its termination and at each location where the conductor is visible and accessible.
- 1) cable assembly 2) switch loops
- 3)supply 4) return (switchleg)
No 1_____ ______ shall be attached to any terminal 2_____ so as to reverse the 3______ ______.
- 1) grounded conductor
- 2) lead
- 3) designed polarity
- 120/240 Volts Single phase
- Phase: A- Black
- N- White
- 120/208volts 3 phase Y(Wye)
- B-Red B.R.B. for 120/208 Y
- 120/240 3 phase Delta
- B-Orange B.O.B. for Delta
- 277/480/3phase/ Y
- B-Orange B.O.Y. for 277/480
Depth of working space condition 1- Insulated Material. What is the distance between Exposed live parts and Insulated materials?
- 0-150v: 3 ft
- 151-600v: 3ft
- So about 3ft.
Depth of working space condition 2- Grounded parts. What is the distance between Exposed live parts and grounded parts?
- 0-150 volts: min 3ft
- 151-600 volts: min 3 1/2 ft
- So about a min 3-3 1/2 ft
Depth of working space condition 3- Exposed Live Parts. What is the distance between Exposed live parts and Exposed Live parts?
- 0-150 volts: 3ft minimum
- 151-600 volts: 4 ft min
so about 3-4 ft min
What is the maximum distance from the grade to the center of a installed meter?
What is the maximum distance between the grade or floor to the highest circuit breaker?
6 feet 7 inches.