Panasonic KX-TDA15 Installation Manual page 53

Hybrid ip-pbx
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2.
Check obstructions.....None
3.
Composition of the earth rod.....Metal
4.
Depth of the earth rod.....More than 50 cm
5.
Cross sectional area of the earthing wire.....More than 1.3 mm
Notes
The above figures are recommendations only.
The length of earth rod and the required depth depend on the composition of the soil.
2.2 Installation of the Hybrid IP-PBX
2
Installation Manual
53

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