49
FieldSmart
®
FiberFlex 2000
__________________________________________________________
Installation Manual
Direct: 763.476.6866 • National: 800.422.2537 • www.SeeClearfield.com • [email protected]
Manual 021574 REV A - June 2020
Installing the Cabinet Ground Connection
You must install the cabinet’s connection to the earth ground circuit before you connect commercial power to the cabinet.
Guidelines
Clearfield recommends adhering to PANI grounding methods to reduce ground current interaction:
•
The PANI system divides the ground bar into sections, with one type of conductor in each section: Producers,
surge Absorbers, Non-isolated and Isolated (PANI).
•
The FiberFlex 2000 cabinet’s main earth ground (that connects to the ground field) should bisect the main ground bar,
effectively separating ground termination positions into two zones, as follows:
• Isolated Ground Zone (IGZ) ‘equipment’ grounds:
Active equipment ground terminations—as well as grounds
for any DC power system(s), if collocated in the same enclosure—should be isolated from surge producing
‘external’ grounds.
• Surge producing ‘external’ grounds:
External interface ground connections (OSP cable sheath ground bonds,
subscriber line protection panels, AC feeds, etc.) are considered surge producers and should be isolated from
equipment grounds.
•
The earth ground connection (middle position) on the
FiberFlex 2000
cabinet ground bar serves as the primary surge
absorber to isolate the equipment grounds from the surge-producing external grounds.
Note:
Cabinet ground wiring diagrams are available at
seeclearfield.com.
