How to Connect Generator to House without Transfer Switch

How to Connect Generator to House without Transfer Switch

how to connect generator to house without transfer switch

Do you frequently experience sudden power outages at your place? Do you want to know how to connect the generator to the house without a transfer switch?

If you frequently experience sudden power outages in your home, you probably want to use generators as your backup power. and using an extension cord to connect the generator to the house without the transfer switch is easy, but it’s a bit tricky isn’t it?

Reading: How to connect a home generator

To make it cleaner and more accessible, I recommend installing a generator plug for the house, which you’ll learn about in this article.


tools you need


You can use an old extension, but you have to make sure the line and end plugs are not damaged.

The perfect length of line to connect your generator is at least 25 feet. you can use as much as you need to hook up the generator, but it also requires a sizable waterproof storage box.

I use a power generator with 3500 watts and 30 amp circuit breakers with 120 volt power supply for this application. you wouldn’t need anything more powerful as this is just a power outage backup. you may want to use a more powerful generator, but you need to upgrade the electrical cables you need to connect it.

Also, using an automatic transfer switch to connect the generator to the house is ideal, especially if you have larger, higher voltage generators.

step by step guide on how to use a generator without the need for any transfer switch


step 1: create a place for the output toolbox


See also: TV Antenna Setup: How to Access OTA Signals from Multiple Directions | Over The Air (OTA) DVR | Tablo

See Also:  How to Connect a Laptop to a Mixer for Playing Sound - Virtuoso Central

create a place for the generator output in your preferred location. To do this, create a rectangular hole that fits your outlet in the wall using your wood and drywall oscillating tool. if you have a cement concrete wall, you can also use your drill.

step 2: drill a hole to run the cables from the generator to the outlet


Using your drill, make a hole to run the wires from the outside of your house. make sure it is larger than the expected diameter of your cables. this way you can avoid damaging electrical wires when installing them inside your outlet kit.

step 3: install the waterproof box outside your wall


On the exterior wall, install your waterproof box. this box is to protect your end cap from any possible damage. you can use any lock box like this sigma electrical box to cover the end plug. however, you may need to find a larger lock box to fit your cables.

step 4: connect the cable to the outlet


To connect the cables to your outlet kit, insert the other end of the cables into a plug outside your house. after inserting the line, you can now assemble the outlet kit inside.

When mounting the outlet and cable, you can seal the outer and inner hole with a sealant. you need it to waterproof your installation.

Step 5: Plug the generator into the outlet and test it

To test this plug-type connection, turn on the generator, engage the input plug, and connect the extension cord to the generator’s input plug. plug in your power consumption tester and plug in a few appliances with a wattage rating that is compatible with your generator to read how many watts your generator produces.

See Also:  How To Use Bose Headphones on PS4 / PS4 Pro

you can watch this video from getmytips to connect a generator to a house. gives you an idea of ​​how this step-by-step guide can be done safely.

how many appliances and devices can I use with a 3000 watt generator

The answer depends on how many watts your appliances have or how many devices you have in your home. you can even use several lower wattage lights and some electrical devices like a phone charger and a laptop at the same time.

See also: Can Ethernet Cables Be Joined? – Home Network Geek

means you can run multiple devices and lights as long as you don’t exceed the maximum capacity of the generator.

However, if you need to run power-hungry appliances like a portable electric stove, you may need to run them individually. this is to prevent overloads that could damage your generator circuitry. It’s also good practice to do essential power consumption checks on your appliances before using them on your backup power source.

note: a wrong calculation of the power can cause overloads that can damage the circuit of your generator. so instead of aiming for the maximum power rating of 3000 watts, you should aim for roughly 2500 to 2800 watts only. this will prevent damage to your generator and prolong its life.

a 15 kilowatt generator will run a house


Most average appliances use 3,000 to 6,500 watts of circuit power. so if you have a 15kw generator you can probably run all your appliances and lights with it. In addition, it generally supports 120 and 240 volt electrical power outlets, allowing it to operate low and high wattage machines.

See Also:  ➤How to connect Sky to the Internet 🕹

in a simple explanation, 1 kw is equal to 1000 watts of nominal power. Therefore, a 15 kW generator set is rated at 15,000 watts. However, if you have more powerful appliances that you use all at once, even a 15kw generator might not be enough. You must first calculate your home requirements before running them all on your generator.

In addition, the use of manual transfer switches or a generator interlock or automatic transfer switch is essential on a 15 kw backup power supply. this way you can easily switch to the main power supply when the power comes back.

because if you have your backup electricity running at the same time as your main power supply, it could damage your generator.


This method of connecting a generator to a home without a transfer switch installed is convenient, especially if you only need a small electric generator.

for this application, you can use any lockbox, especially if you want to use extension cords.

so what do you think of this step by step guide on how to connect the generator to the house without a transfer switch? Is it worth sharing this idea with your neighbor? Share your thoughts in the comments section below.

See also: 12 Ways To Connect A Phone To A Projector

Related Articles

Leave a Reply

Your email address will not be published.

Back to top button