Exam (elaborations)
COMMERCIAL AND INDUSTRIAL WIRING CHAPTER 5 & 6 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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COMMERCIAL AND INDUSTRIAL WIRING CHAPTER 5 & 6 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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COMMERCIAL AND INDUSTRIALWIRING CHAPTER 5 & 6 QUESTIONS
AND ANSWERS WITH SOLUTIONS 2024
Reinforced thermosetting resin conduit RTRC is made from _______ reinforced epoxy. - ANSWER
Fiberglass
______ is a lightweight tubular steel raceway without threads on the ends. - ANSWER EMT
Conductor fill cannot exceed _______ percent underfloor raceways. - ANSWER 40
Rigid metal conduit must be securely fastened in place with supports a minimum of every _______'. -
ANSWER 10
For three or more conductors installing conduit, the maximum fill rate is _______ percent. - ANSWER 40
FMC must be securely fastened with _______ inches of each box, cabinet, conduit body, or point at
which the FMC it terminates. - ANSWER 12
An _______ bend is a
Bend conduit made perpendicular to the original length of the conduit, with the conduit extending a
specified length from back of the bend - ANSWER 90 Degree
Per the only NEC, ENT has restrictions as to its use ______ floors above grade. - ANSWER Three
Most nonmetallic raceways are constructed of ______. - ANSWER Polyvinyl chloride (PVC)
A ________ is a die that is of a certain size and used to fit inside a ratchet handle. - ANSWER Drop head
die
, Unless otherwise marked, LFMC is limited to an operating temperature of ________ degrees Fahrenheit
and ________ C. - ANSWER 140;60
Protector caps are colored _______ for RMC sizes 3/4 an 1 1/4 - ANSWER Red
______ conduit is nonmetallic and intended for encasement in concrete in any location. - ANSWER Type
A PVC
Surface raceway is typically used with lighting, power, and signal circuits of ________ volts and less -
ANSWER 300
A _____ Cable tray that has vertical side rails with evenly spaced horizontal rungs. - ANSWER Ladder
A ______ is an enclosed channel for routing and placing electrical conductors and cables. - ANSWER
Raceway
Conduit nipples have a maximum fill rate of ______ percent of their cross-sectional area. - ANSWER 60
_______ conduit is particularly resistant to moisture in corrosive environments. - ANSWER HDPE
________ cable trays are typically use for low-voltage and low power applications where access to cables
as required after installation. - ANSWER Single rail
If the construction of a building is such that the EMT cannot be fastened to meet the 3 foot distance
requirement, then the distance can be _______. - ANSWER Increase to 5 foot
Because of its flexibility and outer jacket, ____ is used in industrial applications for connecting raceway
systems to motors, heaters, and other pieces of electrical machinery. - ANSWER LFMC
Protector caps are colored _______ for RMC sizes 1/2 in, 1 1/2in , 2 1/2 inches, and 3 1/2 inches. -
ANSWER Black
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