DBS3900 LampSite
Installation Guide
6 Installing an RHUB
Issue 08 (2016-05-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
46
If the PGND cable is provided by the customer, a copper-core cable with a minimum cross-sectional
area of 6 mm
2
(0.009 in.
2
) or 10 AWG is recommended.
The OT terminals at both ends of the PGND cable are assembled at the site.
The M6 OT terminal has the default size. You can replace it with another OT terminal of the
expected size based on the site requirement.
Ensure proper grounding of the RHUB using a PGND cable.
When installing the PGND cable, tightly press the OT terminal in the correct direction, as
shown in Figure 6-32.
Figure 6-32
Correct direction of an OT terminal for the PGND cable
Procedure
Step 1
Route the PGND cable by referring to 6.4.1 Requirements for Cable Layout.
Step 2
Use a torque screwdriver or Phillips screwdriver to secure the M4 OT terminal at one end of
the PGND cable to the ground screw on the RHUB panel with a torque of 1.4 N•m. If the OT
terminal is a one-hole OT terminal, connect it to the ground screw on the lower part of the
RHUB panel, as shown in Figure 6-33.
