Official :: Vidyut Suraksha Nideshalay

OFFICE DIRECTOR, ELECTRICAL SAFETY, UP GOVERNMENT, LUCKNOW.

No. 567 LA / General (B & L Form), dated 26.02.1991

All deputy directors / assistant directors

Electricity, Government of Uttar Pradesh,

With this letter the details of Earthwire / Earth electrode are being attached. The size of the aluminum move was not incomplete in the headquarter's circular letter No. 6547, M / E / Chhattis-38 / generator, dated 10.04.1986, which has been included in this statement. Therefore, action should be ensured as per the enclosed details in the future.

Enclosure: Above

Sign-
(G.N. Lal)Director,
Electrical Security,
Government of Uttar Pradesh, Lucknow

Measurement of fixed mean plate and semantic strip regarding the meaning of electrical installations

Indian Value of Earth Wire and Earth Electrodes According to the Code of Practices of the Institute, I.S 0-732-1966, Minimum size

Plant capacity

Earth Wire Size

Size of Earth Electrode

Copper

G.I.

In Aluminum category mm

Copper cm

G.I. cm

Up to 1.5 kW

S.W.J. No.-8

S.W.G. No.-8

12.5

60 X 60 cm ( 2 X 2 X 1/8’’)

60 X 60 cm ( 2 X 2 X 1/4’’)

More than 7.5 kW and dense

No.-8

No.-6

20.00

Yet

More than 11 km and more than 22 km

No.-6

No.-2 mm

30.00

Yet

90 X 90 cm 6.30 mm-(3 X 3 X 1/4'')

More than 22 kW and more than 37 kph

No.-4

5 X 3.15 mm

37.5

90 X 90 cm 03.15 mm(3 X3 X 1/4’’)

Yet

More than 37 km and more than 75 km

No.-2 or 12.5 mm -2.50 mm strip

Yet

50.00

90 X 90 cm 6.30 mm(3 X 3 X 1/4’’)

Yet

More than 75 kW

225 mmX 2.50 mm strip

50mmX 6.30 mm strip

100.00

Yet

Note:-

"Aluminum drivers can be used only at the level level, the provision of appropriate bimetallic (bye-metal) connectors to connect the drivers to the Earth electrode."

Sign-
(G.N.Lal)
Director,
Electrical safety, Government of Uttar Pradesh,
Lucknow