PaloAlto Networks PA-5000 Series Hardware Reference Manual page 18

Connecting Power
Wind the power wires around the screws and tighten to secure. The -48VDC connection is on the left
and the 0VDC connection is on the right, as labeled when facing the power supply. Turn on the electric
current to the DC feed.
Figure 8. DC Power Supply - Attachment
Important notes on connecting the DC power supply
•
This equipment is designed to permit the connection of the earthed conductor of the DC power
supply circuit to the earthing conductor at the equipment.
•
If this connection is made, all of the following conditions must be met:
– This equipment shall be connected directly to the DC supply system earthing electrode
conductor or to a bonding jumper from an earthing terminal bar or bus to which the DC supply
system earthing electrode conductor is connected.
– This equipment shall be located in the same immediate area (such as adjacent cabinets) as any
other equipment that has a connection between the earthed conductor of the same DC supply
circuit and the earthing conductor, and also the point of earthing of the DC system.
– The DC system shall not be earthed elsewhere.
– The DC supply source shall be located within the same premises as this equipment.
– Switching or disconnecting devices shall not be in the earthed circuit conductor between the DC
source and the point of connection of the earthing electrode conductor.
20 • Installing the Hardware Palo Alto Networks