Installation of Lightning Protectors
Outside
(Main Building)
CO
Protectors
CO
Main CO
Distribution
Frame EXTN
EXTN EXTN
Main
Unit
EXTN
Lightning Protector
(Another Building)
SLT
PT
TEL | TEL |
Earth
Notice
If you install an extension outside of the main building, the following precautions are recom- mended:
(1)Install the extension wire underground.
(2)Use a conduit to protect the wire.
Note
• The lightning protector for an extension is different from that for CO.
Installation of an Earth Rod
Lightning
Protector
CO
Earth Wire
Main
Unit
(1) | Installation location of the earth rod | Near the protector |
(2) | Check obstructions | None |
(3) | Composition of the earth rod | Metal |
(4) | Depth of the earth rod | More than 50 cm |
(5) | Size of the earth wire | Thickness is greater |
|
| than 1.6 mm |
(Underground)
Earth Rod
Notes
•The above figures are recommendations only.
•The length of earth rod and the required depth depend on the composition of the soil.
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