Installing the 7750 SR-a Chassis
7750 SR-a4 and SR-a8 Installation Guide 85
Chassis Ground Wiring
Preparing the Ground Wire
The 7750 SR-a chassis must be correctly connected to earth ground.
Grounding cables are not provided with the 7750 SR-a chassis. The length of the grounding
wire that you need depends on the location of the 7750 SR-a router and its proximity to the
correct grounding facilities. You must use a minimum of #8 AWG wire for the ground
connection.
Alcatel-Lucent supplies the chassis ground lug (Burndy YAZ8C2TC1045, Alcatel-Lucent
PN 52-1178-01). Because of the compact design of the 7750 SR-a chassis, the lug is angled
at 45 degrees. The lug and two 10-32 nuts are included in the accessory kit that is shipped
with the chassis. The lug is designed for #8 AWG ground wire.
Figure 23 shows how to prepare the ground wire for installation. Table 38 describes the
ground wiring features. Figure 24 shows attaching the ground wire connection. Table 39
describes the ground wire connection features.
Danger:
• Only trained and qualified personnel should install or replace this equipment.
• The 7750 SR-a chassis ground studs located on the left-hand side mounting bracket
must be a permanent connection to the earth (building) ground point. The connection
requires the use of the supplied lug and nuts.
• When wiring the 7750 SR-a router, the ground connection must always be made first
and disconnected last.
Note: If you require a gauge larger than #8 AWG, the lug must be a two-hole, 45-degree
lug for #10 studs. The spacing between the two holes in the lug must be 5/8 in. (1.59 cm).
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