EIM 2 PART 3

• Cable tray


  Similar to a wireway unit or assembly of unit and its associated fittings forming a structural system which is used to securely fasten or support cables and raceway
• Cable tray installation


  1. Coordination of manpower from both electrical and mechanical skills

  2. Installed properly can enhance safety of electrical wiring system

  3. Save space materials, labor, time and maintenance extension will be easier to install than any other wiring system
• Electrical wiring


  Connecting different wiring devices, lighting fixtures for the distribution of electrical energy
• Fittings


  Adapter used in electrical wiring system like in conduit pipes, wireways or even in cable tray system
• Cable tray


  Used to support the wiring system in large scale industries, power distribution or telecommunication cables
• Installation


  Act of putting, adding and extending of something in a position so it can work
• Types of cable tray

  • Channel cable tray
  • Ladder cable tray
  • Single rail cable tray
  • Solid bottom cable tray
  • Through cable tray
  • Wire mesh cable tray
• Channel cable tray


  • Used for application with limited numbers of cable usually installed when conduit is less applicable
• Ladder cable tray


  • Used in general applications and look like a rail way having two sides connected individual
  • Ventilated cable tray has provided more support than the other types
• Single rail cable tray

  • Cable tray system or the fastest system to install and uninstall cables because of its aesthetics and usually used for low voltages
• Solid bottom cable tray


  • Used for telecommunication cables or for low heat generating applications
  • Solid shielding part where applicable for those sensitive circuit
• Through cable tray

  • Cable tray with moderate ventilation providing cable support every four inches
• Wire mesh cable tray


  • General purpose for telecommunication and fiber optics cables
  • Fabrication is made of steel wires welded together in all intersections for support
• Cable tray fittings

  • Horizontal cross
  • Horizontal elbow
  • Horizontal tee
  • Horizontal wye
  • Vertical elbow
  • Vertical tee
  • Reducer
• Horizontal cross


  Cable tray fittings used to join cables in four directions
• Horizontal elbow


  Used to bend the direction of the cable tray in horizontal pattern
• Horizontal tee


  Used to change the horizontal direction of the cable tray in three directions
• Horizontal wye


  Cable tray fittings used to bend the direction to 45 ºor 135º
• Vertical elbow


  Two types: one is the direction of cable tray upward from the horizontal connection and the other one is downward from the horizontal plane
• Vertical tee


  Cable tray fitting with three directions the two horizontal connection down to vertical direction or aesthetics look like a funnel
• Reducer


  Used to minimize the width of the cable tray<|>Three types: straight reducers, right hand reducers, and left hand reducers
• It depends on the diagram location on how to apply the cable tray fittings same as wireway fittings
• Horizontal Cross


  13
• City of Good Character
• City of Good Character


  • DISCIPLINE
  • GOOD TASTE
  • EXCELLENCE
• Create a powerpoint presentation about safety practices of installing any type of cable tray


  1. Insert some captions in each picture to explain the ideas in the inserted photos

  2. Send your soft copy to the link/email given by your teacher
• Rubrics for the activity

  • Content
  • Slide Creation
  • Slide Transitions
  • Pictures, Clip Art Background
  • Mechanics
• The required material for the protection or cover in the portion of run's is compatible to cable tray
• Cable tray should be lack of space for maintenance
• It should have permanent warning signs for cable tray with rated over 600 volts' conductors
• Horizontal Elbow is used to change horizontal direction of the cable tray in three directions
• Three are three directions in horizontal wye fittings