User Manual    AMETEK Programmable Power 
RS Series    34 
CHASSIS
GND
TB3
TB1B
TB1A
CHASSIS
GND
 
 
Figure 3-2: Location of AC Input Connection Block (TB3) and Chassis Ground Connection 
 
 
Note:  To comply with product safety requirements, EARTH GROUND must be 
connected to the chassis of the AC power system using the ground stud located 
directly below the AC input fuse block. Use a Green/Yellow ground wire. 
 
Note:  DO NOT USE THE NEUTRAL CONNECTION OF A 3 PHASE Y AC POWER 
CONNECTION IN PLACE OF A TRUE EARTH GROUND CONNECTION. AC power 
system neutrals cannot be used for protective earth ground. 
The mains source must have a current rating equal to or greater than the input fuses and the 
input wiring must be sized to satisfy the applicable electrical codes.  All covers must be re-
installed prior to use and the strain relief provisions located at the rear bottom of the unit must be 
used to maintain protection against hazardous conditions. 
 
AC Line input