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Generator ATS Provides Power During Partial Power Loss

How a Generator Automatic Transfer Switch Works and is a Very Important Part of the Home Generator System

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Guide to Residential Electrical Wiring guide to electrical wiring

A Generator HTS/ATS Can Provide Power When One Leg Of Power Is Lost
Question: I am in a building in Summit county where there are no known power outages. I am assuming there is three phase coming in to our building by the looks of the transformer outside. We have a backup generator which is a Generac Elite series that is supposed to supply backup power for half of the building. Earlier today the power went out in 1/3 of the building.

I am assuming just one phase went out, and so the generator kicked on and has been supplying power ever since. Now the reason I am thinking just one phase went out is because we have two HTS transfer switches. One has standby operation lit with utility power not lit, and the other has utility power lit and the switch position is utility. Is it possible that there is a problem with the power company that just one of the phases are down? And if so, should I report this as a power outrage?

Background: Eric, a Other from Stow Ohio

Dave’s Reply:
Thanks for your electrical question Eric.

How a Automatic Generator Transfer Switch Works

The Importance of a Generator Transfer Switch

Generator Transfer Switches

Home Generator
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Home Generators
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Wiring Home Electric Circuits
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How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
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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 Electric Wiring Projects.

Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

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The Plug-In Outlet Tester
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Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

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My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
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