How to Hook Up Generator to House?

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When emergency situations arise, generators can come in very handy as backup sources in an emergency. The importance of the generator cannot be denied, regardless of whether you are a regular user or not. Generators come in handy when electricity is not available, such as during frequent blackouts.

I’m sure you bought the generator if you are dealing with these types of situations, but now you wonder how to hook up generator to house? If you don’t know what to do, things will go wrong and become a mess.

How to Hook Up Generator to House

Throughout this article, you will learn how to hook up a generator to the house in a clean manner.

Let’s get right into the steps without further ado.

How To Hook Up Generator To House (Step By Step)

1. Find out what type and the amperage of the plug is

Choosing a suitable plug and amperage is the first step.

A generator’s capacity or size determines its power output. A gauge next to the plug indicates its ampacity.

2. Supplies

In order to get an insurance company to accept the installation of a generator, it could be a good idea to purchase a UL-listed device that matches the control box and has been tested and measured for its performance as many insurance companies will demand the UL rating. Material requirements.

The cable should match the circuit breaker box, the double-pole circuit breaker (double pin), the amplifier’s input box, and the cable housing sticker.

A generator must match the size of the power plant where it will be installed.

3. The conduit hole should be drilled or found

There may not be a channel hole in the house, so you will have to drill one. Be sure to drill as near to the plate as possible.  Drilling a hole is easier with a hammer drill.

4. The installation of the input box for power

Prepare the PVC connection by creating a blind hole in the front cover of the power input housing. Both glue and waterproof plugs are suitable for this task. Power input boxes are required materials.

5. Conduit glued and tested

Make the line the length you require using a hacksaw and glue. Before sticking them, make sure they are the right size. Check the measurements before attaching.

6. Connect the generator input

Once the glue is dry, the wiring can be run. Pull the wires one by one from the lead body and connect them to the connector after removing the cover.

At least three-quarters of the insulation should be removed. A large screwdriver or nut should be used to tighten the clamps.

7. Fit the wiring in

Cables should be guided through the duct into the house individually, checked to see that they fit well, and then the duct cover should be replaced.

A silicone or expansive filler must be used to fill the space between the canal and the house.

8. Set up the cable switch box

Remove the four screws on the front panel of the switch and turn off the main power and ranch switches.

Then screw the cable adapter into the blind hole. Next, pull all cable connections through the cable adapter.

9. Arrange the switches in an open area

To do this, most of the switch areas on the right and top of the screen must be clear. You can use enough replacement cables if you move one or two switches down.

The short, insulated cable can be used if space is limited.

10. Installation of switches and cables 

Place the switch in the free space on the switch box’s top right.

Those connected to the red wire will go to one connector, those connected to the black, those connected to the white, and those connected to the ground bars.

11. The hold switch should be installed

The hold switch should now be installed. It prevents the switch from moving in any direction

12. With the interlock, secure the cover of the control panel

Switch the generator switch to the primary off position and replace the control panel and switches that are in the off position.

Make sure the switch is off and the slider is dropped so that it doesn’t turn on. A five-second pause is fine if the light does not turn on immediately.

As a result, the generator can be configured and it has been installed to start working.

How to Connect a Generator to a House without a Transfer Switch

Here is what you need to do if you are connecting a generator to your house without a transfer switch:

1. Create a place to install the outlet utility box

Create an outlet in the location of your choice for the generator. Using your oscillating tool for wood and drywall, create a rectangular hole on the wall that fits your outlet. Also, a drill will work on concrete or cement walls.

2. Drill a hole to run the generator cable

Create a hole outside your house using your drill to run your wires. The hole needs to be bigger than what your wires will be. Installing the electrical wires inside your outlet kit in this manner will prevent damage to the wires.

3. The waterproof box should be installed

Install your waterproof box on the exterior wall. Your end plug will be protected from possible damage by this box. Covering the end plug with this Sigma Electric Box is an option. The smaller safety box might not fit the wires; you’ll need a larger one.

4. The wire should be connected to the outlet

The other end of the wires should be plugged into an outside outlet to be connected to the outlet kit. The outlet kit can now be assembled inside after inserting the line.

Seal the exterior and interior holes with sealant after you have assembled the outlet and the wire. Doing so will prevent your installation from leaking.

5. Test the generator by connecting it to an outlet

Connect your extension to the generator inlet plug and turn on your generator to test this type of connection. To find out how many watts your generator produces, connect a power consumption tester to your generator and attach some appliances with an appropriate power rating.

How to Wire a Generator Transfer Switch

  • Identify which home appliances the generator can access
  • Calculate how much power your generator will require to run each device individually in the fuse box.
  • Ensure that the amperage required for the generator exceeds its capacity. If it does, the generator will fail.
  • The same number should be marked on each appliance and circuit breaker
  • Block the circuit breaker from receiving power from your main power source
  • Switches and circuit breakers need to be removed
  • If you want your insulating tube to cover your wires, trim it to a reasonable length.
  • and use PVC cement to attach the wires. To connect the circuit breaker to the unit, use the wiring harness of the transfer switch.
  • Mark the location of the mounting screws and place the transfer switch on the wall where it is to be installed. Mount it with screws.
  • Using the insulating tube, pull wires through it, trim 1.6 cm of the insulation, and connect them to the transfer switch following the labels created earlier. Each wire should be labeled according to its duty.
  • In addition, join the white wire to the neutral at the center of your transfer switch and the other black wire to the utility 2 pole breaker. On the lower side of the switch, connect the green wire to a grounding bar.
  • Ensure that the main load center’s power supply is disconnected before returning the switch’s cover.
  • Trim 1.6 inches from the insulator on each wire on each appliance’s wire assigned to the circuit breaker box.
  • Attach the other black wires to the other two pole breakers using the wire connectors and follow the labels. It is important that you remove the appliance wires from the 2 pole breakers.
  • To the neutral bar, connect the white wire, and to the ground bar, the green wire. Turn on the power and replace the cover on the main circuit breakers.



There are many of the best, most reliable home generators on the market today that have transfer switches, and they are getting cheaper all the time.

When you are faced with a power outage, rather than wiring your whole house with a generator, just running high-quality extension cords from the generator to the equipment you need is much easier, safer, and less costly.

By doing so, you avoid risky installations. Whether you use a transfer switch or not, connecting your generator to your house should always be done by a professional.

Did this article properly answer your question about how to hook up generator to house? Please spread the word to others who face similar challenges. Leave your comments below.

MyGeneratorLab was founded and is headed by Kaif Rai. As a long-time outdoorsman, I've always been fascinated by generators. I founded MyGeneratorLab to share my knowledge of the best generators on the market with others. I provide reviews on generators with in-depth guides. I will help you learn how to maintain generators properly so they will last longer by using my guides! I started my generator reviews in 2021. Since then, I’ve had the privilege of experiencing and testing generators of all shapes and sizes.

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