What Is an Electrical System? Here’s What You Need to Know

Knowledge of your home’s electrical system is (quite literally) power

A bedroom in a modern house
Photo: Gayrat Tolibov / iStock / Getty Images Plus / Getty Images
A bedroom in a modern house
Photo: Gayrat Tolibov / iStock / Getty Images Plus / Getty Images
Highlights
  • Electrical systems consist of several essential components such as the breaker box, wiring, and outlets. 

  • Replacing or upgrading your system can cost anywhere from $500 to $5,000

  • Hire a licensed electrician to repair or replace any aspect of your home electrical system.

  • Regularly service your electrical system to prevent electrical hazards and energy inefficiencies. 

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Since your electrical system is a vital part of your home, it’s important to know what it includes and how it works. Having a basic knowledge of electrical systems can alert you to electrical issues in your home, keeping you and your family safe. Read on to learn more about electrical systems: basic components, repair costs, common problems, and when to hire an electrician.

Breaker box parts illustrated, including hot wires, lugs, and circuit breakers

What Is An Electrical System? 

Simply put, an electrical system consists of every component in your home that receives and manages electrical power. Your electrical system includes power lines, a breaker box, circuit breakers, wiring, and outlets and switches. The importance of a properly functioning electrical system cannot be understated; it’s the lifeline of the home. A faulty electrical system can be life-threatening, leading to electrical fires or shocks. For this reason, it’s crucial that you hire an electrician to service your electrical system regularly. 

Basic Components of an Electrical System

Electrician installing a power outlet
Photo: Hispanolistic / E+ / Getty Images

An electrical system is made up of several components, each playing a vital role in the overall functioning of your system. Basic components include:

  • Main service panel: Also known as the breaker box, the main service panel is the heart of your electrical system. It’s made up of circuit breakers that distribute electricity to different areas in your home. 

  • Circuit breakers: When inspecting your breaker box, you’ll see rows of switches known as circuit breakers. Each breaker is responsible for a certain area of your home. Breakers will automatically trip when the current exceeds a specific amperage, preventing electrical hazards. 

  • Electrical meter: Usually located outside of your home, the electric meter shows the amount of energy that your home uses. Your meter can make you more conscious of your energy usage, reducing energy waste and monthly electricity bills. 

  • Electrical wiring: Electrical wiring consists of conductors that move electrical currents throughout your home. It’s an extremely important part of an electrical system, responsible for distribution and circuit formation. 

  • Electrical outlets: Outlets are our most frequent point of contact with our home’s electrical system. They allow us to power appliances and electronic devices. Ground fault circuit interrupters, or GCFIs, prevent deadly shock by shutting off the circuit’s power supply if it exceeds a set limit. 

The Cost of an Electrical System

There are many electrical services that your system may need over its lifetime, ranging from minor repairs to full replacements. The cost of each service will depend on the type of repair or replacement, severity of the damage, the item’s location, and local labor rates.

For example, the cost to replace an electrical panel ranges anywhere from $500 to $5,000, with an average cost of $1,313. Your final price tag will depend on several factors, including the type of system, amperage needed, labor, and any required permits. 

Upgrading an electrical panel costs between $1,200 and $2,000 on average, though costs can range from $800 to $4,000. When deciding whether to replace or upgrade your panel, you’ll need to consider your unique electrical needs. Depending on the lifespan of your system, it may make sense to invest in complete replacement rather than an upgrade. If you’re unsure, a licensed electrician can help you make an informed decision. 

Common Electrical System Problems 

Whether you live in a brand-new or older home, chances are you’ll eventually experience problems with your electrical system. Regularly inspecting your electrical system and immediately resolving any issues can mitigate these problems. 

Minor Electrical System Issues

  • Tripped circuit breaker

  • Loose or faulty outlet

  • Flickering lights

  • Frequent lightbulb burnouts

Major Electrical System Issues

  • Faulty or outdated wiring

  • Inefficient power distribution

  • Sparking or warm outlet

  • Presence of aluminum wiring

  • Overcircuited breaker box

  • Ungrounded circuits and fuse boxes

DIY vs. Hiring a Pro

If you encounter issues with your home’s electrical system, it may be tempting to troubleshoot and resolve the problem on your own. However, we strongly recommend that you reach out to an electrician near you for help. Professional electricians charge anywhere from $50 to $150 per hour. 

However, the cost of hiring a pro is well worth it. Electrical work is very dangerous and mistakes can be costly. A licensed electrician is highly trained and has an in-depth knowledge of electrical systems. They’ll quickly be able to diagnose and fix the issue. Additionally, your pro will ensure that electrical work is done safely and in compliance with local building codes.

Frequently Asked Questions

There are several ways to upgrade your home’s electrical system. Common upgrades include installing new outlets and light switches, replacing the electrical panel, and updating wiring. You might also consider making your appliances automated, allowing appliances to shut down on their own. These upgrades can promote energy efficiency and help you save on electricity costs. 

The average lifespan of a home electrical system is anywhere from 30 to 70 years or more, depending on the type of system you have. Modern electrical wiring, like aluminum or copper, can last 50 to 70 years while older types may need to be replaced sooner. Additionally, circuit breakers tend to last anywhere from 30 to 40 years, while electrical outlets need to be replaced every 10 to 25 years. 

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