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How to Set Up a Generator Transfer Switch


By Dave Rongey - Summary:

Installing a Generator Transfer Switch for an Electrical Service Panel


Installing a Generator Transfer Switch

Electrical Question: We have a 400 amp main panel with 3 meters so essentially we have 3 separate main electrical service panels that provide power to three separate sub panels- two separate structures and a water well pump. Is it possible to set this system up with a single backup generator and an automatic transfer switch(or three separate switches) that will power all three sub panels from the single generator when switched to Generator power, and then when switched back to main service power the three sub panels would be powered by the three separate Main electrical panels?

Thanks,
Bob

This electrical question came from: Bob, from Lebec, California

Dave’s Reply:
Thanks for your electrical question Bob

Install a Generator Transfer Switch

  • A generator transfer switch is typically located after the electric meter of the utility company or electrical service provider.
  • Careful attention to the specific electrical service is required for the proper location and installation, especially with the multiple services as mentioned in this question.
  • A project such as this may require one transfer switch for each separate or electrical service unit.
  • A generator transfer switch is installed with a permit and inspections and the project should be performed by a licensed electrical contractor in cooperation with the local building department.

RESOURCES

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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all projects.

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