Transfer Switches - Eaton Cutler Hammer — Service Entrance Breaker Replacement

A Transfer Switches - Eaton Cutler Hammer service procedure — check it applies to your exact model before use.

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Procedure

1. Turn the utility (Source 1) power off and turn the generator (Source 2) control selector switch to the OFF position before attempting to replace the service entrance breaker.
2. Disconnect all wire cables from the contactor.
3. Note their location then disconnect the twelve (12) red wires from the contactor.
4. Remove the hardware securing the utility bus extensions to the contactor and SE Breaker. Remove the utility bus extension.
5. Remove the four (4) screws securing the contactor to the base plate using a blade screwdriver or 0.25 in. socket or nut driver.
6. Remove the two (2) generator lugs and the two (2) load lugs using a blade screwdriver.
7. Once the load lugs have been removed, insert a blade screwdriver up through the circular hole in the load lug bus and remove screws securing the two (2) generator lugs.
8. Place the new utility lugs on the utility bus so the anti-turn protrusions fit in the holes. Once the lugs are in place, take one (1) supplied control wire terminal and hold it underneath the bus. Using one (1) screw and one (1) washer supplied, tighten the control wire terminal and lug to the utility bus. Repeat the process for the second utility lug.
9. Place the new generator lugs on the generator bus. Once the lugs are in place, take one (1) supplied control wire terminal and hold it underneath the bus. Using one (1) screw and one (1) washer supplied, tighten the control wire terminal and lug to the generator bus.
10. Make sure the TVSS wires are routed properly and do not interfere with any other components.
11. Turn utility (Source 1) power and place the generator control selector switch in the AUTO position after the service entrance breaker has been replaced. Test the system for proper functionality.

Source: manual:RLCM instruc manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.