Ground cable
Depending on the type of switch, to attach a ground cable to the switch, you need one of
the included M3 or M4 screws.
NOTE: For AC-powered switches, although the third conductor of the AC power
cord provides a ground path, Dell EMC recommends grounding your switch with a
dedicated ground wire.
NOTE: For DC-powered switches, the only way to safely ground your switch is to
attach a dedicated ground wire.
The switch ships with one of the following two congurations:
• One threaded hole using an included M3 screw.
• Two threaded holes using one of the two included M4 screws.
In both congurations, the ground cable is not included. To properly ground the switch, Dell
EMC recommends a one- or two-hole lug, M3 or M4 hole size. The grounding lugs must be
a UL-recognized, crimp-type lug.
CAUTION: Grounding conductors
must
be made of copper. Do not use aluminum
conductors.
NOTE: Coat the one-hole lug with an anti-oxidant compound before crimping. Also,
bring any unplated mating surfaces to a shiny nish and coat with an anti-oxidant
before mating. Plated mating surfaces must be clean and free from contamination.
NOTE: The rack installation ears are not suitable for grounding.
To connect the ground cable to the switch, follow these steps:
1 Cut your ground cable (not included) to the desired length. The cable length must
facilitate proper operation of the fault interrupt circuits. Use the shortest cable route
allowable.
2 To attach the ground cable, use one of the following:
• Using one threaded M3 hole, attached the ground cable to the lug using an M3
screw with a captive internal tooth lock washer, as shown. Torque the screw to
±4-5 in-lbs.
• Using one of the two M4 threaded holes, attach the ground cable to the lug. Use
an M4 screw with a captive internal tooth lock washer, as shown. Torque the screw
to ±5-6 in-lbs.
3 Attach the other end of the ground cable to a suitable ground point such as the rack or
cabinet.
14
Z9264F-ON switch installation
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