This document provides instructions for electrical grounding, including: 1. Preparation such as site surveys and obtaining necessary approvals and materials. 2. Materials used like grounding rods, boxes, copper wire and PVC pipes. 3. Tools needed like drivers, meters, welding equipment. 4. Detailed steps for installation including driving rods, running wire, welding connections and attaching to buildings. 5. Testing the installed system by measuring resistance values. 6. Includes attachments with shop drawings, material approvals, inspection forms and test results.

1. Electrical Grounding
BY: PIGENG YANG 14 April 2012

2. Electrical Grounding
1.Preparation
2.Materials
3 Tools
4.Installation
5.Test
6.Attachments
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3. 1、Preparation
 Site survey (to identify location of
installation)
 Application of electric power( for ground
rod driver machine)
 Shop drawing (attachment A)
 Material approval (attachment B)
 Incoming material inspection (attachment C)
 Installation inspection (attachment D)
 Test results (attachment E)
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4. 2、Materials
 Grounding rods
 Grounding terminal boxes and test boxes
 Bare copper earth wire, BCEW
 PVC pipes
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5. 3、Tools
 Scaffolding or ladder
 Ground rod driver
 Resistance Meter
 Cad welding mould
 Powder mixture
 Gas torch
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6. 4、Installation
Ground rod driver machine with ladder Ground rod driver machine with scaffolding
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rod into earth

7. 4、Installation
BCEW through ground beam BCEW with PVC pipe under ground beam
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8. 4、Installation
Powder mixture Cad welding mould
Filling the mould with powder mixture 7

9. 4、Installation
Three- way connection mould
Mould with cover closed
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Two-way connection mould

10. 4、Installation
Gas torch to ignite powder Catch fire in three-way mould
Catch fire in two-way mould 9

11. 4、Installation
The joint after mould is taken off A close view of different joint type
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12. 4、Installation
Earth wires to connect with grounding and test boxes
Earth & reference wires installation in electrical room
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13. 4、Installation
Earth wires reserved to connect with lightning rod
Earth wires with PVC pipe attached on column
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14. 5、Test
Connect meter with grounding wire #1 Connect meter with grounding wire #2
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Read the resistance value on the meter

15. THANK YOU
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16. 6、Attachment(A)
shop drawing
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17. 6、Attachment (B)
material approval
Documents of Material Approved Sheet-BCEW
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18. 6、Attachment (C)
Incoming material inspection
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19. 6、Attachment (D)
Field installation inspection
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20. 6、Attachment(E)
Grounding resister test
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