How to connect a generator to your house without transfer switch

Standby generators perform the crucial task of supplying power during outages. They are permanently connected appliances that operate automatically within seconds after a power supply disruption. Most residential generator models run on natural gas, propane, and diesel, allowing them to activate during an outage. As an owner, it's essential for you to understand what it takes to add a generator to your home or RV.

While the installation itself may be complex and require skills from several trades, you, as the owner, can easily manage the project by understanding and implementing the necessary steps to have an excellent experience.

Generator connection diagram

Standby Generator Overview A residential standby generator consists of the generator itself, an electronic controller, and an automatic transfer switch. The system tracks incoming power from the utility company and, upon detecting an outage, begins a sequence of events to run the generator. Once running, the automatic transfer switch disconnects from the main utility lines and stores power in the generator.

In a whole-house system, the switch would include the main service panel. In some configurations, transfer switches may only move specific circuits onto the generator. In both scenarios, the generator mechanisms block inbound utility lines from the power produced by the standby generator to ensure safety. This measure prevents the standby generator from energizing downstream utility lines, which would endanger line works on the utility line restoring the local grid.

Generator transfer switch

DIY is an attractive option for those looking to save costs and enjoy working on their home—our advice: skip the DIY for this project. Most homeowners aren't qualified to complete an installation, and the consequences of a mistake are too significant when dealing with electrical systems. Consult and adhere to the manufacturer's guidelines for proper standby generator placement.