Chapter 34 Flashcards
(43 cards)
Chapters 34 through 43 cover those wiring methods and materials encountered in the construction of ___dwellings and structures regulated by this code.
one and two
E 3401.1 Applications
Services within the scope of this code shall be limited to __ volt, ___ ampere, single phase systems.
120/240, 400
E 3401.2 Scope
Electrical installations in hollow spaces, vertical shafts and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially ___.Electrical penetration into or through fir-resistance-rated walls, partitions, floors and ceilings shall be protected by ___methods to maintain the fire-resistance rating of the element penetrated.
increased, approved
E 3402.2 Penetrations of fire-resistance-rated assemblies.
Electrical materials, components and equipment shall be___.
approved.
E 3403.1 Approval
New electrical work and parts of existing systems affected by new work or alterations shall be ___by the building official to ensure compliance with the requirements of Chapters 34 through 43.
inspected
3403.2 Inspection required.
Electrical materials, components, and equipment shall be ___.
Approved
E 3403.1 Approval
New electrical work parts of existing systems affected by new work or alternations shall be ___by the building official to ensure compliance with the requirements of Chapter 34 through 43.
inspected
E3403.2 inspection required.
Electrical materials, components, devices, Fixtures and equipment shall be __ for the application, shall ___ the label of an approved agency and shall be installed, and used or both , in accordance with the manufacture’s installation instructions.
listed; bear
E 3403.3 Listing and labeling.
Equipment intended to interrupter current at fault level shall have a minimum interrupting rating of ___amperes.
10,000 amperes
E 3404.2 interrupting rating
The overcurrent protective devices,total impedance, equipment short-circuit current ratings and other characteristics of the circuit to be protected shall be so selected and coordinated as to permit the circuit protective device that are used to clear a fault to do so without ___ to the electrical equipment of the circuit.
extensive damage
E 3404.3 Circuit characteristics
Enclosures, other than surrounding fences or walls, of panelboards, meter sockets, enclosed switches,transfer switches, circuit breakers, pullout switches, and motor controllers, rated not over 600 volts nominal and intended for such locations, shall be ___with an enclosure-type number as shown in Table E 3404.4
marked
E 3404.4
The enclosure are not intended to protect against conditions such as condensation, icing, corrosion, or contamination that might occur within the enclosure or enter through the conduit or ___.
unsealed openings.
E 3404.4
Equipment identified only indoor use, shall be protected against weather damage during ___.
construction period
E 3404.5 Protection of equipment
unused equipment shall be closed to afford protection substantially ___ to the wall of the equipment.
Where metallic plug or plate are used with nonmetallic enclosure, they shall be recessed at least ___ inches from the outer surface of the enclosure.
equivalent; 1/4 inch
E unused openings
Internal parts of electrical equipment, including busbars, wiring terminals, insulators and other surfaces, shall not be ___or ___by foreign materials such as paint, plaster, cleaners and abrasives or corrosive residues.There shall not be any damaged parts that might adversely affect safe operation or mechanical strength of the equipment such as parts that are broken; bent; cut; deteriorated by corrosion, chemical action, or overheating. Foreign debris shall be removed from equipment.
damaged contaminated
E 3404.7 Integrity of electrical equipment
Electrical equipment shall be firmly secured to the surface on which it is mounted. ___driven into masonry, concrete, plaster, or similar materials shall not be used.
wooden plug
E 3404.8 Mounting
Approved enclosures shall guard energized parts that are operating at ___ volts or more against accidental contact.
50 volts
E 3404.9 Energized parts guard against accidental contact
In locations where electrical equipment is likely to be exposed to physical damage, enclosure or guards shall be so arranged and of such strength as to ___such damage.
prevent
E 3404.10 Prevent physical damage
The manufacture’s name, trademark or other descriptive marking by which the organization responsible for the product can be identified shall be ___ on all electric equipment. Other marking shall be ___ that indicate voltage, current, wattage or other ratings as specified elsewhere in Chapter 34 through 43. The marking shall have the durability to withstand the environment involved.
placed ; provided
E 3404.11 Equipment identification
Where caution, warning, or danger signs or labels are required by this code, the label shall meet the following requirements:
- The marking shall adequately warn of the hazard using effective words, colors, or symbols or combination of such.
- Labels shall be ___ affixed to the equipment or wiring method.
- Labels shall not be hand written except for portions of labels or marking that are variable, or that could be subject to change. labels shall be ___.
- Labels shall be of sufficient ___to withstand the environment involved.
permanently; legible; durability
E 3404.12 Field-applied hazard markings.
Each disconnection means shall be legibly marked to ___ its purpose, except where located and arranged so that the purpose is evident. The marking shall have the___ to withstand the environment involved.
indicate; durability
E 3404.13 Identification of disconnecting means
The dimension of the working space in the direction of access to panelboards and live parts of other equipment likely to require examination, adjustment, servicing or maintenance while energized shall be not not than ___inches in depth. the work space shall not be less than ___ inches wide in front of the electrical equipment;
36 inches; 30 inches;
E 3405.2 Working clearance for energized equipment and panelboards
The working space shall be clear and shall extend from the floor or platform to a height of ___ feet or the height of the equipment, whichever is great.
6.5 feet
E 3405.2
The indoor space equal to the width and depth of the panelboard and extending from the floor to a height of ___ feet above the panelboard, or to the structure ceiling, whichever is lower, shall be dedicate to the electrical installation.
The area above the dedicate space shall be permitted to contain foreign systems, provided that protection is installed to avoid ___ to the electrical equipment from condensation, leaks, and breaks in such foreign system.
6 feet; damage
E 3405.3 Indoor dedicated panelboard space.
