Telecom Cables Installation Guidelines

Questions and Answers

• Question 1: What should be painted with black and yellow stripes in the location box?

  • Answer: Copper cable screen

• Question 2: What percentage of conductors should generally be left spare for future expansions in cables carrying 5 or more pairs of conductors?

  • Answer: 25% or more

• Question 3: What is the minimum distance that telecom cables should be laid from the nearest track?

  • Answer: 2 meters

• Question 4: At what interval should cable markers be provided along the route?

  • Answer: 50 meters

• Question 5: What should be done if boundary pillars do not exist when laying telecom cables?

  • Answer: Use temporary markers instead

• Question 6: What color should the Quad cable RCC route marker be painted?

  • Answer: Red

• Question 7: What color should be used to identify a Quad joint on an RCC cable marker above ground?

  • Answer: Yellow enameled

• Question 8: What is the minimum depth at which a cable should be buried below the surface of the ground?

  • Answer: 1 meter

• Question 9: What is the minimum distance that must be maintained between the cable and the OHE mast when the trench depth is limited to 0.5 meters?

  • Answer: 1 meter

• Question 10: What is the minimum distance the nearest edge of the cable trench should be from the OHE mast when the trench depth exceeds 0.5 meters?

  • Answer: 3 meters

Additional Questions and Answers

• Question 11: How should the position of cable joints be marked near the OHE mast?

  • Answer: By painting an approved legend on the nearest OHE mast.

• Question 12: What is the required distance for laying cables away from any metallic body of traction sub-stations fixed in the ground?

  • Answer: At least one meter.

• Question 13: For how long should cables be laid in concrete pipes or enclosed brick channels on either side of the sub-station?

  • Answer: 300 meters.

Test your knowledge on the installation and marking of telecom cables. This quiz covers essential guidelines such as proper color-coding, spacing, and distance regulations. Ensure you are aware of current best practices for laying telecom cables safely.