IB70-8671 For more information visit: www.eaton.comInstructional BookletEffective: July 2008 Page 19O & M Manual for the EGS AutomaticTransfer Switchwith RTC-50 Control and Integral Loadcenter - 100 Amp7.4.1.5 Wiring HarnessFigure 19. Wiring Harness Installed in a EGS ATS.Step 1: Turn the utility (Source 1) power off and turn the genera-tor (Source 2) control selector switch to the “OFF” posi-tion before attempting to replace the wiring harness.Step 2: Note their location then disconnect the red wires from thecontactor.Note: All wires connected to the contactor are labeled to ease identifica-tion.Figure 20. Wires to Disconnect from the Contactor.Step 3: Disconnect the J1, J2, J3, J4, J6, J7, and J8 plugs fromthe controller (see Figure 14).The wire harness is now free to be removed.Step 4: Place the new wiring harness in the ATS.Step 5: Connect the J1 through J8 plugs to the controller.Step 6: Reattach the red wires to the contactor. Examine eachwire to find the name then refer to Figure 20 for the cor-rect connection point.Step 7: Apply utility (Source 1) power and place the generatorcontrol selector switch in the “AUTO” position after thewiring harness has been replaced. Test the system forproper functionality.7.4.1.6 Replacing the 100 A LugsFigure 21. Replacing the 100 A Lugs.Step 1: Turn the utility (Source 1) power off and turn the genera-tor (Source 2) control selector switch to the “OFF” posi-tion before attempting to replace the lugs.Step 2: Disconnect all wire cables from the contactor.Step 3: Note their location then disconnect the red wires from thecontactor (see Figure 18).Note: All wires connected to the contactor are labeled to easeidentification.UTILITY COILCONNECTIONSUTILITYAUXCOM.UTILITYAUXN.C.GENAUXN.C. GENAUXCOMGENERALCOILCONNECTIONSE1E2N1N2LOAD LUGSGENERATOR LUGSUTILITYLUGS