WorksheetsCable Tray Load Capacity Quiz
Total questions: 15
Worksheet time: 8mins
Which of the following is a factor in determining the load capacity of a cable tray?
Method of painting the tray
Method used to determine the allowable load
Length of the cable tray
Manufacturer's warranty
Which of the following is a factor in the load capacity of a cable tray?
Spacing of rungs
Color of the cable tray
Manufacturer's logo
Price of the cable tray
Which of the following is a factor in determining the load capacity of a cable tray?
Method of supporting the tray
Color of the cable tray
Manufacturer's logo
Price of the cable tray
What factors affect the load capacity of a cable tray?
Color of the cables
Shape and thickness of side rails
Length of the cables
Brand of the cables
What is the potential consequence of excess loading on the cable tray system?
Improved performance
Potential failure of the system
Increased load capacity
Enhanced stability
What type of failure occurs as bending failures and buckling failures?
Longitudinal failures
Transverse failures
Vertical failures
Horizontal failures
According to NEC Section 630.42, where may welding cable be installed?
In any cable tray
In dedicated cable trays only
In hoistways
In ducts or plenums
What section of the NEC covers the installation of welding cables?
NEC Section 300.8
NEC Section 392.10
NEC Section 630.42
NEC Section 392.12
What must be done if ferrous material is used in cable trays according to NEC Section 392.100(C)?
It must be protected against corrosion
It must be painted
It must be insulated
It must be replaced annually
According to NEC Section 392.60(B), what must the cable tray systems meet to be used as grounding conductors?
All requirements in NEC Section 392.60(B)
Only the size requirements
Only the material requirements
No specific requirements
What does proper grounding help to lessen?
Electrical efficiency
Ground faults hazards
Cable tray weight
Installation time
What is the significance of NEC Table 392.60(A) in cable tray grounding?
It specifies color codes
It specifies cross-sectional area
It specifies installation height
It specifies weight limits
Which component is used to connect a cable tray to a spinning room?
Tray-to-box connector
Horizontal tee
Vertical cross
Offset reducer
What is the purpose of a dropout in a cable tray system?
To allow cables to exit the tray
To support the tray
To connect two trays
To cover the tray
Which component is used to connect a cable tray to a crane?
Horizontal cross
Vertical cross
Tray-to-box connector
Offset reducer
