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ALUMINUM
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COPPER
467
STEEL M.S.
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Generator Neutral Point Earthing

Generator

Rating

Electrolytic

Bare copper

Conductor

or Strip

Insulated (PVC)

Single core

Stranded AL.

Galvanized 

Iron conductor

or  strip

50KVA &  BELOW

8  SWG

15 sq. mm

25 × 3mm

75  KVA

6  SWG

25 sq. mm

40 × 6mm

100  KVA

4  SWG

35 sq. mm

40 × 6mm

150  KVA

2  SWG  or

25 × 1.5mm

70 sq. mm

40 × 6mm

200  KVA

25 × 3mm

95 sq. mm

40 × 6mm

250  KVA

25 × 3mm

150 sq. mm

40 × 6mm

300  KVA

25 × 3mm

225 sq. mm

40 × 6mm

500  KVA

25 × 6mm

300 sq. mm

Above 500 KVA

only copper or

al. strip to be used.

750  KVA

40 × 6mm

2 × 225 sq. mm or

1 × 500 sq. mm

 

800  KVA

40 × 6 mm

 

 

1000  KVA

50 × 6 mm

 

 

1250  KVA

60 × 6 mm

 

 

1600  KVA

80 × 6 mm

(or 50 × 10mm)

-

-

2000  KVA

60 × 10mm

 

 

2500  KVA

75 × 10mm

 

 

 

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