What is the horizontal separation, in well tamped earth, required between power and direct buried telecommunications facilities sharing the same trench?

What is the horizontal separation, in well tamped earth, required between power and direct buried telecommunications facilities sharing the same trench?
A . 152 mm (6 in)
B . 229 mm (9 in)
C . 300 mm (12 in)
D . 381 mm (15 in)
E . 457 mm (18 in)

View Answer

Answer: C