Raceways and Cable Trays in Electrical Wiring
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Questions and Answers

What is the primary function of a raceway in a building?

  • To manage telecommunication cables
  • To distribute high voltage power lines
  • To support electrical conduits
  • To provide a physical pathway for electrical wires (correct)

What is the main advantage of using cable trays in commercial and industrial construction?

  • They are aesthetically pleasing
  • They provide a secure way to manage cables
  • They are only used for high voltage power lines
  • They offer quick, economical, and flexible solutions (correct)

What is the typical consideration for selecting a type of cable tray?

  • The type of material used to make the tray
  • The color of the tray
  • The size and weight of the cables (correct)
  • The brand of the tray

Which type of wiring is NOT supported by cable trays?

<p>Pneumatic wiring (D)</p> Signup and view all the answers

What is the purpose of a ladder cable tray?

<p>To connect two side rails with rungs (C)</p> Signup and view all the answers

What is the primary benefit of using cable trays over open wiring or electrical conduit systems?

<p>They provide a more organized and protected way to manage cables (D)</p> Signup and view all the answers

What makes ladder cable trays effective in terms of cable accessibility?

<p>The rungs of the ladder which provide easy accessibility (A)</p> Signup and view all the answers

Why are solid-bottom cable trays preferred for fiber-optic cable installations?

<p>Because they are concerned for electromagnetic/radiofrequency interference protection (D)</p> Signup and view all the answers

What type of cable tray is made of stainless-steel wires by welding wires together?

<p>Wire mesh cable tray (D)</p> Signup and view all the answers

What is the primary advantage of aluminum as a material for cable trays?

<p>It has excellent strength-to-weight ratio (B)</p> Signup and view all the answers

What is the most widely used coating for cable trays?

<p>Galvanized coatings (C)</p> Signup and view all the answers

What is the primary advantage of galvanized coatings for cable trays?

<p>They are self-healing if an area becomes unprotected (C)</p> Signup and view all the answers

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