HP 9000 rp5400 Servers - Manual (Page 147)

Figure C-1 Raised Floor Metal Strip Ground System
Equipment Grounding Implementation Details
Connect all Hewlett-Packard equipment cabinets to the site ground grid as follows:
1.
Attach one end of each ground strap to the applicable cabinet ground lug.
2. Attach the other end to the nearest pedestal base (raised floor) or cable trough ground point
(nonraised floor).
3. Check that the braid contact on each end of the ground strap consists of a terminal and
connection hardware (a 1/4-in. (6.0-mm) bolt, nuts, and washers).
4. Check that the braid contact connection points are free of paint or other insulating material
and treated with a contact enhancement compound (similar to Burndy Penetrox).
System Installation Guidelines
This section contains information about installation practices. Some common pitfalls are
highlighted. Both power cable and data communications cable installations are discussed.
NOTE: In domestic installations, the proper receptacles should be installed prior to the arrival
of Hewlett-Packard equipment. Refer to the appropriate installation guide for installation
procedures.
Wiring Connections
Expansion and contraction rates vary among different metals. Therefore, the integrity of an
electrical connection depends on the restraining force applied. Connections that are too tight
compress or deform the hardware and causes it to weaken. This usually leads to high impedance
Electrical Factors 147