Connecting A Generator To A Home Video
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How should I install the wiring to connect a generator to my home? Planning and Installing a Generator with a Transfer Switch: How to Connect a Generator to a Home. |
Installing a Generator and Transfer Switch
Electrical Question: How should I install the electric wiring to connect a backup generator to my home?
- I have a new 5000watt generator I plan to install in my home.
- I have purchased a 7500watt, 10 circuit transfer switch and a weather tight power inlet box.
- I have a couple of questions about installing my generator and transfer switch.
- Can I do the wiring myself, and is a permit required?
- If I use 10-4 Romex Type-NM, can I just run it from the Power Inlet Box through the wall to the Transfer Switch?
This electrical question came from: Bob, a Homeowner in 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
Application: How to Install a Portable Generator for a Home.
Skill Level: Advanced. This electrical project is best installed by a Certified Electrician or 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 Backup Generator with a Transfer Switch
- Generator Installation
- First, begin by checking with your local county to see if you can install the generator and transfer switch yourself.
- I am familiar with your county and I believe they will allow you to do the work yourself but yes, you will need a permit and inspection.
- Generator Transfer Switch
- The local electrical utility provider is very serious about generators and transfer switches being installed right, and you want the circuit wiring that takes care of your essential home generator circuits to be functional as well.
- Generator Circuits
- As for installing 10/4 Romex through the wall, this will depend on if the cable will be protected or not which is the concern here.
- It’s always a good idea to use flex conduit to make sure the wiring is protected.
- Generator Capacity
- In all you preparation and planning for your generator set up just keep in mind that the limitation is based on the size of your generator and the type of generator that you purchase.
See More about Home Generators and Home Electrical Wiring
- Home Electric Wiring
- The Importance of a Generator Transfer Switch
- Generator Transfer Switches
- Home Generators
- Home 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.
Electrical Circuits
Electric Circuit Listing
The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.
- Junction boxes
- Electrical Junction Boxes for Home Wiring
- Understanding electrical junction boxes and what they are used for.
- Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance.
- One very important component is the box where the wire will be installed.
- The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.
Electrical plan
Basic Home Wiring Diagrams
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Learn more about Home Electrical Wiring
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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.
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
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
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
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.