Understanding NEC Articles 334, 336 & 338 Flashcards
Type NM cable and associated fittings shall be _____.
Answer 1: marked
Answer 2: approved
Answer 3: identified
Answer 4: listed
Answer 4: listed
334.6
Type NM and Type NMC cables are permitted in _____ except as prohibited in 334.12.
Answer 1: one- and two-family dwellings and their attached/detached garages and storage buildings
Answer 2: multifamily dwellings and their detached garages permitted to be of Types III IV and V construction
Answer 3: other structures permitted to be of Types III IV and V construction
Answer 4: any of these
Answer 4: any of these
334.10(1), (2), and (3)
Type NM cable can be installed in multifamily dwellings and their detached garages permitted to be of Type(s) _____ construction.
Answer 1: III
Answer 2: IV
Answer 3: V
Answer 4: all of these
Answer 4: all of these
334.10(2)
Type NM cable shall be protected from physical damage by _____.
Answer 1: EMT
Answer 2: Schedule 80 PVC conduit
Answer 3: RMC
Answer 4: any of these
Answer 4: any of these
334.15(B)
Where conduit or tubing is used for the protection from physical damage of Type NM cable it shall be provided with a bushing or adapter that provides protection from abrasion at the point the cable _____ the raceway.
Answer 1: enters and exits
Answer 2: leaves and comes into
Answer 3: begins and ends
Answer 4: none of these
Answer 1: enters and exits
334.15(B)
Type NM cable on a wall of an unfinished basement installed in a listed raceway shall have a _____ installed at the point where the cable enters the raceway.
Answer 1: suitable insulating bushing or adapter
Answer 2: sealing fitting
Answer 3: bonding bushing
Answer 4: junction box
Answer 1: suitable insulating bushing or adapter
334.15(C)
Grommets or bushings for the protection of Type NM cable installed through or parallel to framing members shall be _____ for the purpose.
Answer 1: marked
Answer 2: approved
Answer 3: identified
Answer 4: listed
Answer 4: listed
334.17
When Type NM cable is run across the top of a floor joist in an attic without permanent ladders or stairs guard strips within _____ of the scuttle hole or attic entrance shall protect the cable.
Answer 1: 3 ft
Answer 2: 4 ft
Answer 3: 5 ft
Answer 4: 6 ft
Answer 4: 6 ft
334.23
The radius of the curve of the inner edge of any bend during or after installation of Type NM cable shall not be less than _____ the diameter of the cable or the major diameter dimension of the cable for flat cables.
Answer 1: 5 times
Answer 2: 6 times
Answer 3: 7 times
Answer 4: 8 times
Answer 1: 5 times
334.24
Where more than two NM cables are installed through the same bored hole in wood framing that is to be sealed with _____ the ampacity of each conductor shall be adjusted.
Answer 1: thermal insulation
Answer 2: caulk
Answer 3: sealing foam
Answer 4: any of these
Answer 4: any of these
334.80
Type TC cable and associated fittings shall be _____.
Answer 1: identified
Answer 2: approved
Answer 3: listed
Answer 4: labeled
Answer 3: listed
336.6
Type TC cable can be used _____.
Answer 1: for power lighting control and signal circuits
Answer 2: in cable trays including those with mechanically discontinuous segments up to 1 ft
Answer 3: for Class 1 circuits as permitted in Parts II and III of Article 724
Answer 4: all of these
Answer 4: all of these
336.10(1), (2), and (5)
Type TC-ER-JP cable shall be permitted for _____ in one- and two-family dwelling units.
Answer 1: branch circuits
Answer 2: feeders
Answer 3: branch circuits and feeders
Answer 4: service conductors
Answer 3: branch circuits and feeders
336.10(9)
Where Type TC-ER-JP cable is used to connect a generator and associated equipment having terminals rated _____ or higher the cable shall not be limited in ampacity by 334.80 or 340.80.
Answer 1: 60°C
Answer 2: 75°C
Answer 3: 90°C
Answer 4: 100°C
Answer 2: 75°C
336.10(9) Ex
Which of following statements about power and control tray cable is incorrect?
Answer 1: It may be used in a raceway.
Answer 2: It may be used for power lighting or control circuits.
Answer 3: It may be installed where it will be exposed to physical damage.
Answer 4: It may be used in cable trays in hazardous locations where the conditions of maintenance and supervision ensure that only qualified persons will service the installation.
Answer 3: It may be installed where it will be exposed to physical damage.
336.12(1)
_____ cable can be used for interior wiring as long as it complies with the installation requirements of Part II of Article 334 excluding 334.80.
Answer 1: Type SE
Answer 2: Type UF
Answer 3: Type MI
Answer 4: Type FCC
Answer 1: Type SE
338.10(B)(4)(a)(1)
For interior installations of Type SE cable with ungrounded conductor sizes _____ and smaller where installed in thermal insulation the ampacity shall be in accordance with 60°C (140°F) conductor temperature rating.
Answer 1: 14 AWG
Answer 2: 12 AWG
Answer 3: 10 AWG
Answer 4: 8 AWG
Answer 3: 10 AWG
338.10(B)(4)(a)(3)
Type USE cable is not permitted for _____ wiring.
Answer 1: underground
Answer 2: interior
Answer 3: aerial
Answer 4: aboveground installations
Answer 2: interior
338.12(B)(1)
