Cisco Cisco 1 GHz GainStar Amplifier Installation Guide

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Important Safety Instructions, Continued 

If the plug still fails to fit, contact an electrician to replace the obsolete 2-terminal 
outlet. 

If this equipment is equipped with an external grounding terminal, attach one end of 
an 18-gauge wire (or larger) to the grounding terminal; then, attach the other end of 
the wire to a ground, such as a grounded equipment rack. 

 
Class I Mains Powered Equipment   

Provided with a 3-terminal AC inlet and requires connection to a 3-terminal mains 
supply outlet via a 3-terminal power cord for proper connection to the protective 
ground. 
Note: The equipotential bonding terminal provided on some equipment is not 
designed to function as a protective ground connection. 

Class II Mains Powered Equipment 

Provided with a 2-terminal AC inlet that may be connected by a 2-terminal power 
cord to the mains supply outlet. No connection to the protective ground is required 
as this class of equipment is provided with double or reinforced and/or 
supplementary insulation in addition to the basic insulation provided in Class I 
equipment. 
Note:  Class II equipment, which is subject to EN 50083-1, is provided with a chassis 
mounted equipotential bonding terminal. See the section titled Equipotential 
Bonding for connection instructions. 

If this equipment is equipped with an external chassis terminal marked with the IEC 
60417-5020 chassis icon (

), the installer should refer to CENELEC standard EN 

50083-1 or IEC standard IEC 60728-11 for correct equipotential bonding connection 
instructions.