How to Connect Generator To House Without Transfer Switch
Power and Energy

How to Connect Generator To House Without Transfer Switch

Standby or portable, compact, or a giant, generators are next to a man’s best friend during power outage seasons. Hence, learning to use and maintain a generator and hooking it up properly with your house operations is essential.

Installation of using transfer switches is an essential step to generator usage. But many ignore that given the cost of installation and the switch itself. So one familiar alternative house owners are always after, is learning how to connect generator to house without transfer switch. In this article, we introduce things you’ll need, featuring the most important part- an “interlock kit,” using which, in five broad steps, and you’ll have something done!

Also, Don’t forget to checkout Whole House Generator Reviews

Things You’ll Need

Here’s what you will need:

transfer switch installation tools
  • Safety Wear – You will be dealing with all things electrical soon; hence you need to be safe yourself. Get your pair of working gloves, get your protective goggles, and wear that working boot. Make sure there isn’t an open water source nearby.
  • Tools – Drill, electrical tape, wrenches, pliers, screwdrivers, and drill bits are essential everyday tools that you may need.
  • Wires – This will depend on the area you mean to cover. Ten feet of ten gauge in three sets should be enough electrical wire to get the job done. Get different colors if that is more convenient to work with, and if you need help, get that too.
  • Breaker – Your breaker should suit your generator. A double switch of 30-ampere current should be enough.
  • Interlock Kit – This is the deal you will need as the substitute for a transfer switch connection. You can find kits with models made for your generators. Get one of those, and we promise it doesn’t break the bank.

How to Connect Generator to House Without Transfer Switch:

Follow these five broad steps to help you with the connection. These are somewhat similar in case you wanted to know how to connect a portable generator to your house without using a transfer switch:

Get Ready

Since you will be dealing with electricity, wires, and the big old generator that holds all that power, we need you to be safe in your position. Make sure that everything is within your reach, the tools, and emergency help.

If you can make sure that these and the safety measures are done well, only then proceed forth. And if you aren’t sure at any point, call for professional help. Also, understand that what you are moving with is somewhat illegal and may be unacceptable in some states.

The next thing that needs to keep in mind is that you shouldn’t be connecting male to male plugs. Again, you are not to connect the generator directly to any sort of circuit breaker. Any of these two and you will see an explosion. So be careful.

Read Amperage

Once you are done understanding the safety precautions and making sure that your house or property doesn’t catch fire, it is time to do some more work.

The first thing that you need to do next is to check the plug type of your generator. You can easily find the huge round plug on your generator when you look for it. This is the same plug that powers the two sides of the breaker. Near it, you will find the amperage. Along with the amperage, you will see some codes. Reading the codes, you can adjust them as required.

Read Amperage


Now that you have adjusted the necessary materials using the plug codes we just talked of, it is time to drill a hole on a house wall. This hole will be the gateway of wires between the generator and the house itself. Drill a big one to make sure that all the cables can pass easily through and are accessible. All the electrical wires should be comfortable sitting in the hole without being forced into positions.

Also, find a spot for the hole that is distant from the power generator. This is a reasonable safety precaution, and also makes sure that your goodnight’s sleep isn’t ruined from all the massive rumbling noises a generator is guilty of! So, to make sure that you are sleeping well and to make sure of safety, place the generator where people wouldn’t usually run into. If it is in the garden, then putting it covered with a soundproof box also helps to reduce the noise and maintain that nobody comes too near it by accident. If you want, you can also have the generator box colored according to the colors of adjacent shrubbery or environment to let it better blend in.

Drill a hole


Next, come to the exterior wall of your house where you drilled the hole. It is time to install the power inlet. The mounting of the power inlet should happen a couple of feet away from the hole in question. Also, while you’re at it, ensure that the gap is watertight. Once you’re done with the power inlet, it is time for another job.

Take the conduits and assemble them nicely. It is time to glue them.

Now you will need to wire the inlet plug of your generator. Take the aggregate conduit body and pull one wire after the other and attach them to the plug. Now, make the breaker box ready to receive all that wire we have been throwing to it. Push all the wires while making sure that the main breaker is turned off. You should have installed all fences by now.

Also, Read How Do You Properly Break in a Generator

Prepare for Cover

All you need to do now is stall the breaker retainer. Once that is done, you will need to cover the breaker. And you’re done!

Word of Caution:

We get it. During emergencies and disasters, you need a generator more than anything to function your house normally. Whatever happens without electricity now?


So wanting a generator as backup power is understandable. But when you are not taking into consideration the usage of a transfer switch, you are allowing yourself to be open to safety hazards.

A transfer switch is a recommended safety installation, and you are now planning to bypass it. For a safe run of the generator, transfer switches are super important. Even though we will not include the use of a transfer switch in this article, it is our duty to have you one recommended at your household.

So, if you have a heavy-duty generator at home that connects to multiple appliances and devices, you should have the generator hooked up to a transfer switch. It is also essential to have one installed at home if you plan to move on from and hand over your property to another. All of this is according to The National Electric Code. Also, having a transfer switch reduces the chances of electrocution or fire from extension wires and prevents death by injury. Hence, a transfer switch is essential to effectively, safely, and efficiently, and immediately power your house. Knowing all of these, only then should you proceed with your task of how to hook up the generator to the house without a transfer switch.


Hopefully, you have learned how to connect a generator to your house without a transfer switch now. Remember that, when you don’t have a transfer switch, your only best alternative is using an interlock kit.

If you mean to try or have come across ideas that can do this otherwise, be sure to check it with the state rules. It is illegal to do otherwise than the kit. Ensure your right to safety is intact and that the price you’re saving by not going for a transfer switch is worth it. Keep yourself and your property safe!

Read Next

As an Amazon Associate, I earn from qualifying purchases.

Leave a Reply

Your email address will not be published.

Social media & sharing icons powered by UltimatelySocial
Follow by Email