Measuring cross-sectional area of a cable

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SUMMARY

The discussion centers on measuring the cross-sectional area (CSA) of a circular cable, specifically a 5-core cable with a measured diameter of 19.5 mm. The calculated area using the formula A = πr² results in 298.49 mm², which contradicts the tag on the cable indicating a CSA of 10 mm². This discrepancy suggests that the 10 mm² may refer to the CSA of each individual copper conductor within the multi-strand cable. The inquiry also seeks clarification on calculating the diameter of a cable with a CSA of 6 mm².

PREREQUISITES
  • Understanding of circular geometry and area calculation
  • Familiarity with the use of vernier calipers for measurement
  • Knowledge of multi-strand cable construction
  • Basic principles of electrical conductors and their specifications
NEXT STEPS
  • Research the formula for calculating the cross-sectional area of circular objects
  • Learn about the specifications and applications of multi-core cables
  • Investigate the significance of conductor CSA in electrical performance
  • Explore methods for accurately measuring cable diameters using calipers
USEFUL FOR

Electrical engineers, technicians working with cables, and anyone involved in the design or installation of electrical systems will benefit from this discussion.

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How do we measure cross-sectional area of a cable (obviously circular)?
For example, diameter of a cable as measured from vernier caliper was 19.5 mm. If we apply A = pi(3.14) r2, answer is 298.49 mm square but tag on said cable is showing Area = 10mm square?
Please explain.
 
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No idea. Maybe this was the cross-section of each copper conductor in the cable ?
Or a typo ?
 
Is it a multi-strand cable, i.e. each strand has a CSA of 10 mm²?
 
Its a 5-core cable actually. Please let me know whether I am calculating cross-sectional area of cable correctly? You can help me by telling that what will be diameter of a 6 square mm cable?
Thanx
 
Last edited:

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