Generac — Operational Testing - RTS Load Center Transfer Switch

Operation · generator and transfer switch

From a Generac service manual — check it applies to your exact model before use.

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Procedure

1. Switch the generator's main circuit breaker OFF and put the mode switch in the OFF position.
2. Make sure utility power is OFF and place all priority circuit breakers in the transfer switch in the OFF position.
3. Insert the transfer handle into the main contactor slot and pull DOWN to the generator position.
4. Put the mode switch in MANUAL to start the engine, warm up, then switch the main breaker ON.
5. Check that line-to-line voltage is approximately 240 volts and line-to-neutral voltage is 120 volts.
6. For 8 kW models check that the frequency is approximately 60Hz.
7. Switch the generator's main breaker OFF and put the mode switch in the OFF position to shut down.
8. Move the main contacts to the UP (utility) position and switch the 2-pole breaker ON in the distribution panel.
9. Switch the generator's main breaker ON and put the mode switch in AUTO.
10. Shut OFF utility power and make sure the generator starts automatically.
11. With the generator supplying the transfer switch, close the breakers one at a time until the generator accepts the entire priority load.
12. With the generator carrying the entire priority load, recheck gas pressure to verify it is at the same level as before starting.
13. Switch the main breaker ON to restore utility power and allow the engine to cool down and shut off.

Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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