Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Operation

Generac 20kW — Operation

For the Generac 20kW.

Browse Generac generators & specs →

Procedure

  1. 20
  2. 5. Use the manual transfer handle inside the transfer switch to move the main contacts back to their UTILITY position, i.e., loads connected to the utility power source (Figure 3.2).
  3. 6. Turn ON the utility power supply to the transfer switch using the means provided.
  4. 7. Set the system to automatic operation as outlined in Automatic Transfer Operation section.
  5. 3.5 SIDE COMPARTMENT (FIGURES 3.3 & 3.4) Local codes may require this compartment to be locked. A hasp is provided so the owner can secure the compartment with their own padlock. Check local codes in the area.
  6. 3.5.1 MAIN CIRCUIT BREAKER This is a 2-pole breaker rated according to the Specifications sec- tion.
  7. 3.5.2 EXTERIOR READY LIGHTS Green LED ‘Ready’ light is on when utility is present and switch • is in AUTO indicating the generator is ready and when the gen- erator is running. Red LED ‘Alarm’ light is on when the generator is OFF or a fault • is detected. (See the Protections Systems section.) Yellow LED ‘Maintenance’ light (See the Protections Systems • section.)
  8. 3.5.3
  9. 120 VAC GFCI OUTLET & 15 AMP BREAKER (17 & 20 KW ONLY) These models are equipped with an external, 15 amp, 120 volt, GFCI convenience outlet that is located in a compartment on the right side of generator (Figure 1.3). When the generator is running, in the absence of utility power, this outlet may also be used to power items outside your home such as lights or power tools. This outlet may also be used when utility power is present by running the generator in manual mode. This outlet does not provide power if the generator is not running. This outlet is protected by a 15 amp circuit breaker in the same com- partment as the outlet. (Do not use when the generator is running in exercise mode.) Figure 3.3 – Side Compartment Figure 3.4 – Open Side Compartment 120V GFCI Outlet
  10. 15 Amp Outlet Breaker Main Circuit Breaker LED Indicator Lights

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.