NEC iPasolink 200 Manual page 149

FRAME GROUNDING
Lighting rod
Earth line
isolated from tower
(Grounding-resistance:
less than 10 ohms)
(Grounding-resistance
of tower: less than
10 ohms)
Coaxial cable
This is the buried earth
wire.
This type of wire is not an
insulated winding wire and
recommends to make a
naked wire.
Notes
This connection is an example.
Installation
Submission Prohibited
NEC Internal Use Only
ODU
Coaxial cable
FG
EP
The coaxial cable lets through the inside of the steel tower.
The earth between ODU-IDU lets through the inside of the
steel tower.
Use a copper grounding conductor to ground the rack.
The grounding conductor to the CO GND be connected to
the rack.
* NEC recommends that frame ground of ODU should be connected to
earth line as NEC's standard installation.
EP Earth Ground Point of tower
FG Frame Ground terminal of the IDU (5 mm square cable (means more
than 2.5 mm diameter cable (AWG #10) is recommended to apply for the
earth grounding. The proper press fix terminal tool shall be used.)
Fig. 8-2 Connection for Frame Grounding (2/2)
Tower
It lets through the center of the steel
tower as much as possible.
Earth line
Grounding cable for ODU should be
connected to the nearest EP of the tower.
Earth line*
(Grounding-resistance:
less than 10 ohms)
INDOOR EARTH
LINE
IDU
8-3
GROUND
LEVEL
NWD-107460-02E