If the number of poles in an 11 KV transmission line is 80, then how many disc insulators are required?

• A. 240
• B. 160
• C. 6
• D. 80

Answer: (A)

No of disc required for 11 kV transmission line = 1 disc
Since the transmission line is 3-phase, therefore, the number of discs required for a single-pole will be 3.
Total no. of poles = 80
No of disc = 3 × 80 = 240