26207 power point 2 Quiz

The load capacity of a cable tray is influenced by which material aspect?

• Material used

• Color of the material

• Age of the material

• Weight of the material

Which factor is considered when determining the load capacity of a cable tray?

• Safety factor used

• Color of the tray

• Length of the tray

• Type of cables

What method is used to determine the allowable load of a cable tray?

• Method used to determine the allowable load

• Color coding method

• Length measurement method

• Weight estimation method

Which factor affects the support of a cable tray?

• Method of supporting the tray

• Color of the support

• Length of the support

• Type of support material

Which of the following is NOT a factor in determining the load capacity of a cable tray?

• Type of connectors used

• Spacing of rungs

• Material used

• Method used to determine the allowable load

What are the two types of cable tray failure?

• Longitudinal and transverse

• Vertical and horizontal

• Diagonal and parallel

• Circular and linear

What must single-conductor cable be marked for according to NEC Section 392.10(B)(1)(d)?

• Use in hoistways

• Use in cable trays

• Use in ducts

• Use in plenums

According to NEC Section 300.8, where must electrical conductors not be installed?

• In the same raceways with water pipes

• In the same raceways with gas pipes

• In the same raceways with steam pipes

• All of the above

What is a requirement for cable tray systems according to NEC Sections 392.12 and 300.22(C)(2)?

• Must have a solid metal bottom

• Must be used in hoistways

• Must be used in ducts

• Must be used in plenums

What does NEC Section 392.18(D) state about cable tray extension?

• May be extended through partitions and walls

• Must not be extended

• Can only be extended horizontally

• Should be extended with flexible materials