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Generac 20kW — The transfer switch is now electrically

For the Generac 20kW.

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Procedure

  1. 5. Use an accurate AC voltmeter to check utility power source voltage across transfer switch terminals N1 and N2. Nominal line-to-line voltage should be 240 volts AC.
  2. 6. Check utility power source voltage across terminals N1 and the transfer switch neutral lug; then across terminal N2 and neutral. Nominal line-to-neutral voltage should be 120 volts AC.
  3. 7. When certain that utility supply voltage is compatible with transfer switch and load circuit ratings, turn OFF the utility power supply to the transfer switch.
  4. 8. On the generator panel, set the Auto/Off/ Manual switch to MANUAL. The engine should crank and start.
  5. 9. Let the engine warm up for about five minutes to allow inter- nal temperatures to stabilize. Then, set the generator’s main circuit breaker to its ON (or closed) position.  Proceed with caution! Generator power volt- age is now supplied to the transfer switch. Contact with live transfer switch parts will result in dangerous and possibly fatal electri- cal shock. Post Installation Start-up and Adjustments

Source: manual:9f84685f-0bec-42e0-a4e9-5c2c50b4b67b.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.