Huawei OptiXstar B650G-8E8P3W - Grounding for TN-S;TN-C-S Systems

– In the case of the TN-C-S and TN-S AC power distribution systems, you
are advised to use the PE wire of the AC power cable for the ONU
grounding connection. The PE wire of the AC power cable for the corridor
of the building is already grounded properly.
– Connect the ground bar and all the internal devices using the ground
cable (the cross-sectional area of the ground cable must be greater than
or equal to 6 mm
2
), and the ground bar to the network box in an
equipotential manner through a metallic structure.
– Connect the grounding point of the strength member of the optical
ber
to the ground bar through a ground cable, or connect this grounding
point to the network box in an equipotential manner through a metallic
structure.
– When the PE line of the AC power cable in the corridor of the building
does not meet the grounding requirement, ground the network box
through an external ground cable (PGND cable) and ensure that the
strength member of the optical
ber is disconnected from the device
ground point.
– Decouple the surge protector from the ONU power source using a power
cable of 3–5 m.
● Guide for Grounding the Network Box of the TT Power Distribution
System
OptiXstar B650G-8E8P3W
Quick Start 01 3 Installing the Device
Issue 01 (2022-04-07) Copyright © Huawei Technologies Co., Ltd. 9