Electrical module 8 Exam Questions and
Answers
Non-liquid tight and liquid tight - Answer-Flexible metal conduit is generally available in
two types
Type L conduit body - Answer-Is used as a pulling point for conduit that requires a 90 •
change in direction
Type LL conduit body - Answer-If the opening is to the left
Sealing fittings - Answer-Minimizes the passage of gases, vapors, or flames through
conduit and reduces accumulation of moisture. Also required if conduit passes from
hazardous location
Grounding locknut - Answer-Maybe needed if a bonding wire is to be installed
Standoff support (Minerallac) - Answer-Used to support conduit away from the
supporting structure
Flush surface - Answer-In reinforced concrete construction, the conduit and boxes must
be embedded in concrete to achieve
Special concrete boxes - Answer-Available depths up to 6" and have special ears that
are nailed into wooden forms
M8x1 - Answer-Typical metric fastener size
Powder actuated tools - Answer-Look and fire like gun and use for from gunpowder
(.22, .25, .27 caliber) to drive fastener into material
Level 1 and Level 12 - Answer-Lowest and highest level for powder actuated tools
The drive pin or stud should be embedded - Answer-A minimum of 1/2" in hard concrete
and 1 1/4" in softer
Stud bolt anchors - Answer-Heavy duty threaded anchors . Good choice to use when
jacking or leveling of the fastened component is needed because it's made to bottom in
its mounting hole
The derating factors in NEC Table 310.15 (B)(3)(a) - Answer-Shall be applied to
wireways only where the number of current-carrying conductors exceed 30 including
neutral conductors
Answers
Non-liquid tight and liquid tight - Answer-Flexible metal conduit is generally available in
two types
Type L conduit body - Answer-Is used as a pulling point for conduit that requires a 90 •
change in direction
Type LL conduit body - Answer-If the opening is to the left
Sealing fittings - Answer-Minimizes the passage of gases, vapors, or flames through
conduit and reduces accumulation of moisture. Also required if conduit passes from
hazardous location
Grounding locknut - Answer-Maybe needed if a bonding wire is to be installed
Standoff support (Minerallac) - Answer-Used to support conduit away from the
supporting structure
Flush surface - Answer-In reinforced concrete construction, the conduit and boxes must
be embedded in concrete to achieve
Special concrete boxes - Answer-Available depths up to 6" and have special ears that
are nailed into wooden forms
M8x1 - Answer-Typical metric fastener size
Powder actuated tools - Answer-Look and fire like gun and use for from gunpowder
(.22, .25, .27 caliber) to drive fastener into material
Level 1 and Level 12 - Answer-Lowest and highest level for powder actuated tools
The drive pin or stud should be embedded - Answer-A minimum of 1/2" in hard concrete
and 1 1/4" in softer
Stud bolt anchors - Answer-Heavy duty threaded anchors . Good choice to use when
jacking or leveling of the fastened component is needed because it's made to bottom in
its mounting hole
The derating factors in NEC Table 310.15 (B)(3)(a) - Answer-Shall be applied to
wireways only where the number of current-carrying conductors exceed 30 including
neutral conductors
