Connecting the Chassis to Ground

Before connecting power and turning on the router, you must provide an adequate ground connection for your system. Two M5 ground receptacles provide a chassis ground connection for electrostatic discharge (ESD) and for your safety. A grounding lug mount is provided on the rear of the chassis. The mounting nuts are in the lower right corner of the rear of the chassis. (See Figure 8.)

Figure 8 Ground Lug Location

uBR7225-VXR

270534

Ground lug location

The building installation should provide a means for connection to the protective earth, and the equipment must be connected to that means.

Before installing the equipment, you must check whether the socket-outlet from which the equipment is to be powered provides a connection to the building protective earth. If not, arrange for the installation of a protective grounding conductor from the protective grounding terminal on the equipment to the protective earth wire in the building.

Warning

Caution

High leakage current—earth connection essential before connecting to system power supply. Statement 342

Use copper connectors only. Statement 1025

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024

The Cisco uBR7225VXR router installation must comply with all applicable codes and is approved for use with copper conductors only. The ground bond fastening hardware should be of compatible material and preclude loosening, deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis ground to a headend, hub, or other interior ground system should be made with a 6-AWG, copper ground conductor at a minimum.