Why should we use jelly filled armoured cables in underground Communication sy

Why should we use jelly filled armoured cables in underground
Communication system? What is the use of the Jelly? If we go
for unarmoured, then what happens?

Question Posted / ramsel1985

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Why should we use jelly filled armoured cables in underground Communication system? What is the us..

Answer / sarmadahmed

I'm not sure but jelly is used to absorb moisture which means cable's insulation will have longer life.

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