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Connecting A Generator To A Home


By Dave Rongey - Summary:

How should I install the wiring to connect a generator to my home? How to Connect a Generator to a Home, Installing a Generator and a Transfer Switch.

Installing a Generator and Transfer Switch

Electrical Question: How should I install the wiring to connect a generator to my home?

This electrical question came from: Bob, a Homeowner from Pollock Pines, California.
Additional Comments: Very well thought out and organized.

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

How to Connect a Generator to a Home

Skill Level: Advanced – Best installed by a Licensed Electrical Contractor.
Tools Required: Electricians pouch of hand tools and the various power tools necessary for installing the generator and transfer switch.
Estimated Time: Depends on the type and size of the generator and transfer switch and the available access to the project area.
Precaution: Any existing electrical wiring within the immediate area that may interfere with the installation of the transfer switch may need to be relocated if necessary.
Important: Installing a generator and transfer switch requires planning and the application of electrical codes that will apply to the specific project. The project must be well thought out and performed with a permit, and all work must be inspected.
Note: If your home has sustained damaged from a storm then be sure that home repair work has been authorized and coordinated through your local or state building authorities. Contact your homeowners insurance provider for specific information relating to the home repairs. Detailed photos should be taken to document any damage.

Planning and Installing a Generator with a Transfer Switch

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FAQs Frequently Asked Questions and Comments

5 Responses to “Connecting A Generator To A Home”
  1. Tom Risinger says:

    Hi Bill,
    I’m installing a generator inlet box on the exterior of my garage. There is an exterior water faucet about a foot from the ground. How far away from the faucet should I install the inlet box? Thanks.

  2. Dave Rongey says:

    Hi Victor,
    With all the generator panels and transfer switches installations I have done I have always located to receptacle for the generator cord on the outside near the generator. As you nay know, a generator may not be located indoors for a number of reasons, most of all carbon monoxide and locating the generator receptacle indoors could be misleading. Ask the question to your local building department when you obtain your permit to be sure.
    Dave

  3. Victor says:

    I want to run my portable generator about 10 feet in front of my garage. Can I install the flanged power inlet inside the garage (connected ro the transfer switch by Romex run inside the wall), or is this against code and needs to be installed outside the house? I live in CT.
    Plugging the extension cord inside the garage would be safer (dry) but I don’t know if allowed.

    Thanks

  4. Dave Rongey says:

    Hi Bill,
    If the 10-4 SO Cable will be permanently installed then it would be best to protect it with EMT or PVC conduit which is strapped and supported. To prevent overheating, the size of the conduit should provide the same amount of free air space as the size of the 10-4 cable.
    Dave

  5. Bill Heisler says:

    I’m about to install a generator transfer switch with an outside power outlet for the generator using 10-4 SO wire which will run along sheetrock on the inside of the garage wall for 6 or 7 feet. Should this wire be run in conduit or is it possible it will overheat if it is? Thanks.