Installation guide

Connecting Protective Earth Ground and External Power to the Shelf

Chapter 4

Connecting Protective Earth Ground and External Power to the Shelf

This chapter provides information on connecting protective earth ground and external system power to the

installed 14-Slot Shelf.

WARNING Disconnect all power cords to completely remove power. This is a shock hazard.

IMPORTANT Overcurrent protection for the system must be provided at the installation site at not less than

125% of the load for each supply circuit. Due to safety issues when servicing the system, only

one blade should be removed at a time and any slots not containing a blade must have a cover

plate installed.

NOTE System DC power requirements are located on the side of the ATCA chassis. HP PN:

AD171-2000A on the power label is equivalent to the FCLSB-0602.

Connecting the Shelf to Earth Ground

WARNING Protective ground must be connected to the 14-Slot Shelf before connecting any

external power. This is a high voltage hazard if not connected.

On the right-rear of the 14-Slot Shelf, connect an earth grounding cable to the two grounding lugs located

above the power entry module A (PEM A). See Figure 4-1 and Figure 4-2.

Recommended minimum specifications for the grounding cable and its connection include the following:

• Recommended Minimum Wire Size: AWG6

• Recommended Terminals: Use only double lug terminals, with a 45

angle.