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CHAPTER 5: INSTALLING THE SWITCH
NOTE: You can (optionally) use the CLI to assign the master unit role, or select a different stack member as the standby unit, based
on priority or MAC address.
5.5 GROUND CABLE
Black Box recommends that you ground your switch. To attach the ground cable to the chassis, use a single M4 x 0.7 screw. The
cable itself is not included with the switch.
To properly ground the chassis, Black Box recommends using a 6 AWG one-hole lug, #10 hole size, 63” spacing, not included in
shipping. The one-hole lug must be a UL recognized, crimp-type lug.
CAUTION: Grounding conductors must be made of copper. Do not use aluminum conductors.
NOTE: The rack installation ears are not suitable for grounding.
NOTE: Coat the one-hole lug with an antioxidant compound before crimping. Also, bring any unplated mating surfaces to a shiny
finish and coat with an antioxidant before mating. Plated mating surfaces must be clean and free from contamination.
1. Cut the ground cable to the desired length.
The cable length must facilitate proper operation of the fault interrupt circuits. Black Box recommends using the shortest cable
route allowable.
2. Take the one M4 x 0.7 screw from the package.
3. Attach the one-hole lug to the chassis using the supplied 10–32 screw with the captive internal tooth lock washer. Torque the
screw to 20 in-lbs.
4. Attach the other end of the ground cable to a suitable ground point. The rack installation ears are not a suitable grounding point.
