Onan generators are a popular choice for providing backup power as well as for use in recreational vehicles and boats. However, when it comes to wiring an Onan generator, it can be a daunting task for those who are not familiar with electrical wiring. In this article, we will provide a comprehensive guide on Onan generator wiring schematic that will help you understand the wiring diagrams, and how to wire your Onan generator.
Introduction to Onan Generators
Onan generators are made by Cummins Inc. and are known for their reliability and efficiency. These generators are used in a range of applications, including backup power for homes and businesses, as well as power for recreational vehicles and boats. Onan generators come in various sizes and are designed for different purposes, but they all require proper wiring to function correctly.
What is a Wiring Diagram?
A wiring diagram is a simplified representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices. Wiring diagrams make it easy for technicians to understand how a circuit works and how to troubleshoot problems. When it comes to an Onan generator, a wiring diagram is crucial for understanding the wiring schematic and ensuring that the generator is wired correctly.
Types of Onan Generators
Onan generators come in different types, including diesel, propane, and gasoline generators. Each type has its unique wiring schematic, and it’s essential to understand the wiring diagram for your specific generator type before wiring it.
Onan Generator Wiring Schematic
The wiring schematic for an Onan generator can be a bit complicated, but with a basic understanding of electrical wiring, it becomes more manageable. One of the essential things to remember when wiring an Onan generator is to follow the wiring diagram closely. The wiring diagram will guide you on how to connect the various components of the generator, such as the battery, starter solenoid, fuel pump, and ignition coil.
Below is a general wiring schematic for an Onan generator:
| Component | Wire Color | Connection |
| Battery Positive | Red | Connect to positive battery terminal |
| Battery Negative | Black | Connect to negative battery terminal |
| Ignition Coil | Black/White | Connect to ignition switch |
| Starter Solenoid | Yellow | Connect to starter switch |
| Fuel Pump | Green | Connect to fuel pump relay |
FAQ
What size wire should I use for my Onan generator?
The wire size for your generator will depend on the generator’s amperage and the distance the wire has to travel. Generally, it’s recommended to use at least 14-gauge wire for the generator’s starter and ignition circuits and 12-gauge wire for the battery and fuel pump circuits.
What is the purpose of a grounding wire in an Onan generator?
A grounding wire is used to protect against electrical shock and equipment damage in case of a short circuit. The grounding wire provides a path for current to flow to the ground instead of through the equipment or person. The grounding wire in an Onan generator should be connected to a grounding rod or the generator’s frame.
Can I wire my Onan generator myself?
Wiring an Onan generator can be a bit complicated, and it’s recommended that you have some basic knowledge of electrical wiring before attempting to wire your generator. If you’re not confident in your wiring skills, it’s best to hire a licensed electrician to do the wiring for you.
What should I do if I’m not sure about the wiring diagram for my Onan generator?
If you’re not sure about the wiring diagram for your generator, you should consult the owner’s manual or contact the manufacturer’s customer support. Onan has an extensive library of wiring diagrams available on their website that you can download and use as a reference.
What maintenance should I do on my Onan generator’s wiring?
Regular maintenance of your Onan generator’s wiring includes checking for signs of wear and tear, such as frayed wires or loose connections. Make sure to keep the wiring clean and free of debris that can cause damage. Always follow the manufacturer’s recommendations for maintenance and inspection.
Conclusion:
Wiring an Onan generator can be a bit challenging, but with a proper understanding of the wiring diagram, you can wire your generator with confidence. Always follow the manufacturer’s recommendations for wiring and maintenance and consult a licensed electrician if you’re not confident in your wiring skills. Remember to keep the wiring clean and free of debris and perform regular maintenance and inspection to ensure that your generator functions correctly.
