Basic Electrical Engineering

Classification of cables – According to the rating of voltage the cables, According to insulation, cables, According to number of conductors, cables

Classification of cables

a. According to the rating of voltage the cables are classified into

i. Low tension cables up to 1 KV

ii. High tension cable up to 11KV

iii. Super tension cables 22 KV to 33KV

iv. Extra high-tension cables 33KV to 66 KV

v. Oil filled cables 66KV to 132 KV

vi. Extra super voltage cables beyond 132 KV

b. According to insulation, cables are classified into

i. PVC insulated cables

ii. Mineral insulated cable

iii. Paper insulated lead sheathed cable

iv. Cross linked poly ethylene cable

v. Paper insulated lead covered double tap armored cable

c. According to number of conductors, cables are classified into

i. Single core cable

ii. 2 core cable

iii. 3 core cable

iv. 4 core cable

v. 3 ½ core cable

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