IB70-8671
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Instructional Booklet
Effective: July 2008
Page
19
O & M Manual for the EGS AutomaticTransfer Switch
with RTC-50 Control and Integral Loadcenter - 100 Amp
7.4.1.5 Wiring Harness
Figure 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 the
contactor.
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 from
the 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 each
wire 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 generator
control selector switch in the “AUTO” position after the
wiring harness has been replaced. Test the system for
proper functionality.
7.4.1.6 Replacing the 100 A Lugs
Figure 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 the
contactor (see Figure 18).
Note:
All wires connected to the contactor are labeled to ease
identification.
UTILITY COIL
CONNECTIONS
UTILITY
AUX
COM.
UTILITY
AUX
N.C.
GEN
AUX
N.C. GEN
AUX
COM
GENERAL
COIL
CONNECTIONS
E1
E2
N1
N2
LOAD LUGS
GENERATOR LUGS
UTILITY
LUGS
