![found this big onan transfer switch in our basment, anyone know how old this is, of its oversized or what these switches do? There are replacment spark plugs for what i assume found this big onan transfer switch in our basment, anyone know how old this is, of its oversized or what these switches do? There are replacment spark plugs for what i assume](https://preview.redd.it/found-this-big-onan-transfer-switch-in-our-basment-anyone-v0-r652ktply7eb1.jpg?width=640&crop=smart&auto=webp&s=2fb5ecde5444b82879da3d7c2a3705e2e82e4b63)
found this big onan transfer switch in our basment, anyone know how old this is, of its oversized or what these switches do? There are replacment spark plugs for what i assume
![New 300 Amp Cummins Onan Automatic Transfer Switch OTPCC 480V | S/N: F000120219 | Fetting Power, Inc. New 300 Amp Cummins Onan Automatic Transfer Switch OTPCC 480V | S/N: F000120219 | Fetting Power, Inc.](https://fettingpower.com/wp-content/uploads/2021/10/FullSizeRender-28.jpeg)
New 300 Amp Cummins Onan Automatic Transfer Switch OTPCC 480V | S/N: F000120219 | Fetting Power, Inc.
![Onan Load Transfer Control LTE30-3/272A 30 Amp 242139 LTE LTM 30 272A Studebaker (GA0096-1) - River City Industrial Onan Load Transfer Control LTE30-3/272A 30 Amp 242139 LTE LTM 30 272A Studebaker (GA0096-1) - River City Industrial](https://cdn11.bigcommerce.com/s-0cnuc/images/stencil/2048x2048/products/25346/656840/ga0096%20(5)__55209.1674614259.jpg?c=2)