top of page

What the Heck is Reversed Polarity? Understanding a Common Electrical Issue

plugging into a reversed polarity outlet

If you've ever heard the term "reversed polarity" thrown around in electrical discussions and found yourself scratching your head, don't worry, you're not alone. Reversed polarity is a common electrical issue that can pose risks to both your appliances and your safety if left unchecked. So, let's break it down and demystify what reversed polarity is all about.

Understanding Polarity Basics

First things first, let's talk about polarity. In an electrical system, polarity refers to the direction of flow of electrical current. For most appliances and electrical devices to work properly, they need to be connected to the electrical supply with the correct polarity: the hot wire (usually black or red) should be connected to the brass-colored terminal, and the neutral wire (usually white) should be connected to the silver-colored terminal. This ensures that electricity flows in the intended direction.

So, What Exactly is Reversed Polarity?

Reversed polarity occurs when the hot and neutral wires are connected incorrectly at an electrical outlet or receptacle. In other words, the hot wire is connected to the silver-colored terminal (neutral) and the neutral wire is connected to the brass-colored terminal (hot). This reverses the direction of electrical flow, which can lead to various issues and potential hazards.

Why Reversed Polarity Matters

Reversed polarity may not seem like a big deal at first glance, but it can have serious consequences. Here are a few reasons why it's important to address reversed polarity promptly:

  1. Electrical Shock Risk: Reversed polarity can increase the risk of electrical shock, especially if you come into contact with metal parts of appliances or electrical fixtures.

  2. Appliance Damage: Appliances connected to outlets with reversed polarity may not function correctly and could suffer damage over time due to the irregular flow of electricity.

  3. Fire Hazard: Reversed polarity can create conditions that increase the risk of electrical fires, particularly if it causes appliances or wiring to overheat.

How to Identify Reversed Polarity

Identifying reversed polarity is relatively straightforward, and it's a good idea to periodically check your outlets for this issue. You can use a simple plug-in tester or a multimeter to determine if the hot and neutral wires are correctly connected. Signs of reversed polarity may include:

  • The tester indicating "hot" on the neutral side and "neutral" on the hot side.

  • Appliances not working properly or exhibiting unusual behavior.

  • Electrical shocks or tingling sensations when touching appliances or electrical fixtures.

Fixing Reversed Polarity

If you discover reversed polarity in your electrical system, it's essential to address it promptly. In most cases, correcting reversed polarity involves rewiring the outlet so that the hot and neutral wires are connected correctly. This task is best left to qualified electricians who have the expertise and tools to ensure the job is done safely and correctly.


Reversed polarity may sound like a technical term, but it's a relatively simple concept with potentially significant implications for electrical safety and functionality. By understanding what reversed polarity is and knowing how to identify and address it, you can help protect your appliances, your home, and yourself from potential hazards.

If you suspect that your electrical system may have reversed polarity or if you need assistance with any other electrical issues, don't hesitate to reach out to us for professional help. Your safety is always worth the investment.

bottom of page