Generator Guide

How to Fix a Low Voltage Generator in 3 Easy Ways

In this article, we will talk about low generator voltage, its causes, and how you can fix your generator if it’s producing low voltage without consulting your electrician or generator mechanic. Regardless, it is not in all cases you can do it yourself.

Table of Contents

What is Generator Voltage?

Generator voltage is known as the electrical potential difference between two points in a circuit. The voltage can be low for several reasons, including loose or corroded wires, bad connections, or a damaged generator. If you suspect that your generator’s voltage is low and after following the procedures below, then you should have it checked by a qualified technician.

What Causes Low Generator Voltage?

If you’re experiencing low generator voltage, there are a few potential causes. 

Firstly, check to see if the generator is overloaded. If it is, then you’ll need to reduce the load. If the generator isn’t overloaded, the problem may be with the generator itself. It’s possible that the voltage regulator is set too low or that there’s a problem with the engine. However, If you’re not sure what the problem is, then it’s best to call a professional.

Secondly, the common cause is a problem with the generator’s stator. The stator is the part of the generator that produces the electricity. If it’s not working correctly, the generator won’t have enough power, and the voltage will be low. 

Nonetheless, if your generator has any of these problems apart from the first one, you should call your technician or generator repairer.

Also Read:

How to Fix Generator AC Socket

Top 3 Ways to Run a Generator in Rain

How to Fix Generator That Won’t Start

How To Fix Low Generator Voltage Yourself

If your generator is providing low voltage, there are various ways you can fix it. Besides, I have looked at multiple factors that cause low voltage, and here we will talk about how to fix low generator voltage yourself.

1. The engine isn’t running at the correct speed—the speed is low. 

A generator running at low speeds is the most common cause of low generator voltage. If your generator speed is running low, it can cause your generator voltage to be low too. To fix this issue, ensure the engine runs at the correct rate according to the manufacturer’s specifications. And to do that is by increasing its speed.

2. The generator isn’t providing enough power. 

This could be due to several factors, a faulty capacitor. However, not all generators make use of capacitors. While some make use of AVR, others make use of Diode. So if this causes your generator voltage, it will be best if you change it.

3. Stator is not producing adequate current. 

If this is the reason your generator has low voltage, then the best way for you to fix this issue is to call your technician or generator repairer.


We have looked at the various causes of low generator voltage and how they can be fixed. Although you can set some, others can’t be resolved except if you call your technician or generator repairer. 

However, if your generator is low, it can also cause a low voltage. Instead of calling your technician or generator repairer, it will be best to do it yourself. If you feel uncomfortable doing it yourself, you can contact your technician or generator repairer.

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By Abdulmajeed Abdulwasiu

Abdulmajeed Abdulwasiu is the founder of Generator Hacks, a writer, student, generator consultant and generator mechanic. He has 7 years of experience repairing generators, which he learned from his uncle, but naturally, he’s a writer. He loves reading, and writing and hence if he’s not repairing generators he’s writing.

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