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Connect each pedestal to four strips using 1/4 in. (6.0 mm) bolts
tightened to the manufacturer’s torque recommendation.
• Good—Use the raised floor structure as a ground grid. In this case,
the floor must be designed as a ground grid with bolted down
stringers and tin-lead or zinc plating (to provide low resistance and
attachment points for connection to service entrance ground and HP
rp7400 server equipment). The use of conductive floor tiles with this
style of grid further enhances ground performance.
• Adequate—If the excellent or good ground grid systems are
impossible to implement, contact your Hewlett-Packard site
preparation specialist. Arrangements can be made to provide custom
lengths of ground braid to interconnect system cabinets. However,
connecting system cabinets with custom lengths of braided ground
straps causes higher ground impedance than the techniques used in
the excellent and good ground grid systems, and the resulting ground
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