Outside (Co) Line Connection - Panasonic KX-TA308 Installation Manual

2.7

Outside (CO) Line Connection

Installation
CO
Installation of an Earth Rod
Grounding Wire
(Underground)
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 (20 inches)
5) Size of the grounding wire . . . . . . . . . . . . . Thickness more than 16 AWG
Note • The above example is only a recommendation.
2-8
Installation
Lightning
Protectors
Ground
Lightning
Protectors
CO
Rod
• The length of the earth rod and required depth depend on the composition of the soil.
CO
Terminal
Board
EXTN EXTN
TEL TEL
System
CO
System
EXTN
Protective
Earth
Terminal
Frame Ground
CO: Outside line
EXTN: Extension line
TEL: Telephone