Avaya S8700 - Ground and Connect AC-Powered Media Gateways; Connect the AC Grounds; Connect AC-Power Ground

117
Installing an Avaya SCC1 Media Gateway Stack
October 2002
Ground and Connect AC-Powered Media
Gateways
!
CAUTION:
S8700 Multi-Connect configuration grounding shall comply with the general rules for
grounding contained in Article 250 of the National Electrical Code (NEC), National Fire
Protection Agency (NFPA) 70, or the applicable code at the installation site.
NOTE:
Before connecting the media gateways to the approved ground, determine the best method
of grounding. See Approved Grounds
for more information. Also, locate the
approved ground as close to the media gateways as possible.
NOTE:
The ground plates and media gateway clips are installed later in this procedure.
Connect the AC Grounds
• ‘‘Connect AC-Power Ground’’ on page 117
• ‘‘Set the Ringer Frequency’’ on page 119
• ‘‘Connect the Power Cord into the Power Receptacle’’ on page 119
Connect AC-Power Ground
1 Measure and cut a length of 6 AWG (#40) (4 mm
2
) wire long enough to reach between
the media gateway stack single-point ground block and the approved ground. See
‘‘Typical AC Power and Ground Layout — Rear’’ on page 118
.
2 At the lower left rear of the expansion control media gateway A, connect the 6 AWG
(#40) (4 mm
2
) ground wire to the media gateway stack single-point ground block.
3 Run the ground wire to the approved ground and attach securely.
4 Repeat Steps 1-3 for each expansion control media gateway A.
NOTE:
If the media gateway stacks are remotely located (in a separate room or building), run the
6 AWG (#40) (4 mm
2
) media gateway ground wire to an approved protective ground.
5 At expansion control media gateway A, connect a 10 AWG (#25) (2.5 mm
2
) wire to the
single-point ground block. The 10 AWG (#25) (2.5 mm
2
) wire must be long enough to
reach the telecommunications cables at the rear of the media gateways, to follow these
cables to the Main Distribution Frame (MDF), and to terminate at the Coupled Bonding
Conductor (CBC).
The Coupled Bonding Conductor (CBC) wires are installed and terminated in ‘‘Cabling Media
Gateways’’ on page 141.