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Cable size from Transformer

Recommended size of cables on Secondary side of Transformers
 

Transformers Capacity in KVA

3 Phase, 433 V
 

PVC Aluminium cable size (Armoured)
  100

One run of 31/2 core 95sq.mm.

 

  150

One run of 31/2 core 185sq.mm.

 

  160

One run of 31/2 core 240sq.mm.

 

  200

One run of 31/2core 300sq.mm.

 

  250

One run of 31/2core 400sq.mm. (or) Two Runs of 31/2core 185sq.mm.

 

  315

Two Runs of 31/2 core 240sq.mm.

 

  400

Three Runs of 31/2core 300 sq.mm.

 

  500

Three Runs of 31/2core 400 sq.mm.

 

 

Four Runs of 31/2 core 300sq.mm.

 

  630

Four Runs of 31/2 core 400sq.mm.

 

  750 & above

Bus bar trunking

 

     

 

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