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Generac — GENERATOR TESTS UNDER LOAD

A Generac service procedure — check it applies to your exact model before use.

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Procedure

  1. Set generator’s main circuit breaker to its OFF (or OPEN) posi-
  2. Turn OFF all breakers on the load center of the transfer box (T1
  3. Set the generator's AUTO/OFF/MANUAL switch to OFF.
  4. Turn OFF the utility power supply to the transfer switch,
  5. Manually set the transfer switch to the STANDBY position, i.e.,
  6. Set the generator's AUTO/OFF/MANUAL switch to MANUAL.
  7. Let the engine stabilize and warm up for a few minutes.
  8. Set the generator’s main circuit breaker to its ON (or CLOSED)
  9. Turn ON the load center of the transfer switch (T1 and T2).
  10. Connect an accurate AC voltmeter and a frequency meter

Tools required

  • the means provided

Source: manual:0H8358.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.