8 Installing the Hardware
E300 DC PEM Chassis Ground
E600i TeraScale and ExaScale DC Chassis Ground
Step Task
1 Locate the chassis ground connector studs on the PEM front panel. The
two studs on the upper left are the ground connection.
2 Remove all nuts and washers from the two ground studs.
3 Apply a coat of anti-oxidant paste to the connector studs.
4 Install the grounding cable. This cable is typically green or green and
yellow.
NOTE: Termination points require UL-listed 2-hole lug with 1/4-
inch holes on 3/4-inch spacing.
5 Replace the two washers and nuts on the studs.
6 Secure the nuts with a nut driver or torque wrench (not to exceed 4
ft/lbs).
7 Connect the opposite end of the grounding cable to the appropriate
nearest grounding.
Step Task
1 Remove one outer nut and one washer from each of the six studs. The
inner nut should remain tight on the stud, at no more than 25 inch-lbs.
2 Locate the chassis ground connector studs on the PEM front panel. The
two bottom studs are the ground connection.
MAKE GROUND CONNECTION FIRST
CAUTION - CAUTION -
Use copperUse copper
conductors onlyconductor
s only
(-) -48V cable, typically black
Ground cable, typically green or
green with yellow stripes
(+) Return cable, typically red
Over-current protector switch
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