Updated August 27, 2023

How Connect Generator To House Without Transfer Switch – (11 Steps)

When faced with a power outage having a backup generator can be a lifesaver providing you with essential electricity until the utility power is restored.

While its strongly recommended to use a transfer switch for connecting a generator to your home some homeowners may consider alternative methods due to various reasons.

However, it is crucial to understand that connecting a generator without a transfer switch can pose safety hazards and should be approached with caution.

This blog post will provide you with a detailed guide on how to connect generator to house without transfer switch but we strongly advise consulting a licensed electrician for a safe and compliant installation.


(11 Steps) How Connect Generator To House Without Transfer Switch?


Connecting a generator to a house without a transfer switch can be risky and potentially dangerous as it can create a safety hazard for both you and utility workers. It’s always recommended to use a transfer switch or consult a licensed electrician for proper installation.

However, if you are determined to proceed without a transfer switch, I can provide 11 general steps.



1. Assess Your Power

Needs Before connecting a generator determine the power requirements of your essential loads. Calculate the total wattage needed and select a generator that can handle the load without overloading.

2. Safety Precautions

Ensure that both your generator and your house are properly grounded. Follow all safety precautions, including wearing appropriate protective gear working in well-ventilated areas, and adhering to local electrical codes.

3. Selecting a Connection Point

Identify the circuits or appliances you want to power during a power outage. Choose the connection point closest to your main electrical panel to minimize cable length and voltage drop.

4. Generator Power Inlet Box

Install a generator power inlet box on the exterior of your house near the selected connection point. This box will act as a receptacle for the generator’s power cord. Ensure it is weatherproof and rated for the appropriate voltage and amperage.

5. Generator Interlock Kit

A generator interlock kit is a crucial safety device that prevents the main utility breaker and the generator breaker from being turned on simultaneously. Follow the manufacturer’s instructions to properly install the interlock kit ensuring it complies with electrical codes.

6. Cable Selection and Installation

Select the appropriate cables for connecting your generator to the power inlet box. Use cables that are rated for the generator’s amperage and voltage. If needed, use heavy-duty properly sized extension cords. Properly route and secure the cables, ensuring they are protected from damage.

7. Disconnect from the Main Power Supply

Before starting the generator disconnect your house from the main power supply by turning off the main utility breaker. This step is crucial to prevent backfeeding electricity into the utility lines which can endanger utility workers and damage appliances.

8. Starting the Generator

Follow the manufacturer’s instructions to start the generator and allow it to stabilize. Adjust the choke and throttle settings as required. Ensure the generator is properly grounded and positioned in a well-ventilated area.

9. Connect the Generator to the Power

Inlet Plug the generator power cord into the generator power inlet box on the exterior of your house. Only connect the pre-selected circuits or appliances to avoid overloading the generator. Do not connect the generator directly to the main electrical panel.

10. Power Up Selected Circuits

Flip the breakers of the circuits you wish to power with the generator. Ensure that the total electrical load remains within the generator’s capacity to prevent overloading. Prioritize essential loads and switch off non-essential devices to conserve power.

11. Monitoring and Managing Power Usage

Continuously monitor your power consumption and manage the connected loads to prevent overloading the generator. Be mindful of the generator’s limitations and avoid plugging in high-power devices that could exceed its capacity.

Keep in mind this treatment is not suggested due to safety reasons. A transfer switch provides a safer and more convenient way to connect a generator to a house allowing for a seamless and secure transition between utility power and generator power.

Please note this information provided for educational purposes only. Attempting to connect a generator to your home without a transfer switch can be dangerous and may violate electrical codes. Its always recommended to consult a professional electrician for assistance.

Related: Average Cost to Install Generator Transfer Switch?


Conclusion: How To Hook Up Generator to House Without Transfer Switch?


Connecting a generator to your home without a transfer switch should only be considered a last resort and under specific circumstances. While this guide provides general steps,

it’s important to emphasize the potential safety hazards associated with this method. A transfer switch offers a safer and more convenient solution for connecting a generator to your home enabling seamless transitions between utility power and generator power.

Always prioritize safety and consult a licensed electrician for proper installation and compliance with electrical codes.


FAQs: How to Connect Portable Generator to House Without Transfer Switch?


Can I connect a portable generator to my house without a transfer switch?

Yes, you can, but it’s not recommended due to safety risks and potential damage to appliances.

What’s the safest way to connect a portable generator to my house?

Using a manual transfer switch or an interlock kit is the safest way to connect a generator to your house.

Can I plug the generator directly into a wall outlet?

No, plugging a generator into a wall outlet, known as back feeding, is dangerous and violates electrical codes.

What’s an interlock kit?

An interlock kit is a device that ensures your main electrical panel and generator breaker cannot be turned on simultaneously.

Are there any alternatives to a transfer switch for connecting a generator?

Yes, you can use an interlock kit, which is a cost-effective alternative to a transfer switch for a safe generator connection.

About Saad Ahmed
Hi am Saad Ahmed and as you can see that i have been a generator mechanic for the past 12 years of experience in this industry. But now i am Full time digital marketer and affiliate blogger.