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Home Generator Automatic Transfer Switch Design


By Dave Rongey - Summary:

How to Wire a Custom Generator Transfer Switch – This series covers a wide variety of topics all about home generators including sizing, selecting, connecting and safely operating this all important addition to your home.

Custom Designed Automated Generator Transfer Switch

Electrical Question: Hey Dave: About a year ago in this time you were indispensable to me at helping me successfully wire a 2 speed whole house attic fan with a Leviton electronic timer. You were worth every penny of the consultation!

I’m back with an entirely different question, and am only too glad to pay you for your time.

My purpose is for you to:
A) Review work I am considering for potential safety problems, or
B) Better ways of handling the matter.

I am going to try to have power from a backup generator AUTOMATICALLY provide electricity to several circuits in my home. These circuits are now part of my main (and only) electrical panel, in my otherwise stand-alone single family home.

With somewhat more detail, my hardware includes the following:

A) outdoor generator/inverter that cannot produce more than 3000 (clean) watts AC
B) electrical sub-panel
C) automatic transfer switch

Currently, when power goes out, I manually fire up the generator, and manually, using (manual) transfer switches, provide power to these select few circuits from the generator. Of course, once utility power is restored, the whole thing gets reversed, manually.

Additional Comments: Awesome website with clear instructions.
Background: Russ, a Homeowner from Scarsdale, New York

Dave’s Reply:
Thanks for your electrical wiring question Russ.
NOTE:
This was a custom designed project so the details are not shown due to specific sizing.

I have provided the following resources that lead to fully detailed information on this website that will assist you with your electrical question:

How to Wire a Custom Generator Transfer Switch

Custom Designed Automated Generator Transfer Switch
Generators
Generators

This series covers a wide variety of topics all about home generators including sizing, selecting, connecting and safely operating this all important addition to your home.

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Learn How to Wire it Right with my
Complete Guide to Home Electrical Wiring
Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electrical Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
Electrical Codes for Home Electrical Wiring
....and much more.

» Click here to learn more about Home Electrical Wiring «
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FAQs Frequently Asked Questions and Comments

2 Responses to “Home Generator Automatic Transfer Switch Design”
  1. Dave Rongey says:

    Hi Pubadu,
    Can you provide any more information about the automatic transfer switch?
    That would be very helpful.
    Dave

  2. pubudu says:

    Do you have a wiring diagram of a contactor controlled ATS automatic transfer switch?