Electrical Distribution Systems: A Guide on What to Know

Author: Passey Electric. |


Electrical distribution systems are the backbone of our modern society, powering everything from homes and businesses to hospitals and schools. These systems are responsible for delivering electricity from power plants to customers, and they play a critical role in ensuring that we have access to reliable, safe, and affordable energy. 

While the workings of electrical distribution systems may seem complex and intimidating, this guide aims to provide a brief overview of the key components and processes involved in these systems. Whether you are a homeowner, a business owner, or simply someone looking to learn more about how electricity gets to your home or workplace, this guide will provide you with a solid understanding of the basics of electrical distribution systems.

What Are Electrical Distribution Systems?

Electrical distribution systems are networks of electrical infrastructure that deliver electricity from power generation facilities to homes, businesses, and other end-users. These systems typically operate at lower voltages than high-voltage transmission systems that transport electricity over long distances, and they are responsible for distributing electricity to specific customers and loads. 

These particular systems can vary widely in size, complexity, and design, depending on factors such as the location, population density, and energy demands of the area they serve. However, they generally consist of three main components: distribution substations, distribution lines, and transformers.

How Do Electrical Distribution Systems Work?

Electrical distribution systems work by converting high-voltage electricity from the transmission system into lower-voltage electricity that can be used by homes and businesses. This process starts at distribution substations, where the voltage is reduced using transformers. The lowered voltage electricity is then distributed along distribution lines, which are typically overhead wires or underground cables. These lines connect to transformers that are located in neighbourhoods or near individual buildings, where the voltage is further reduced to the appropriate level for use by customers.

Once the voltage has been reduced to an appropriate level, the electricity is delivered to individual customers through service lines that connect to their homes or businesses. These service lines may be overhead or underground, and they typically terminate in a meter that measures the amount of electricity used by the customer.

To ensure that the electrical distribution system operates safely and reliably, various protection devices and control systems are employed. For example, protective relays can detect faults or abnormal conditions in the system and trigger circuit breakers to isolate the affected area. Additionally, control systems can monitor and adjust the flow of electricity to meet changing demands and maintain system stability.

What to Know about Power Distro Boxes

Power distribution boxes, or distro boxes, are devices used to distribute electrical power to multiple devices or equipment from a single power source. They are commonly used in the entertainment industry for events such as concerts, festivals, and film productions.

Distro boxes typically have multiple outlets, which are connected to circuit breakers or fuses to protect against overloading or short circuits. They may also have power monitoring capabilities to track the amount of power being used by each outlet.

Distro boxes can be designed for indoor or outdoor use and may be portable or mounted on a rack. They are available in various sizes and configurations to meet different power distribution needs.


Electrical distribution systems play a vital role in ensuring the safe and efficient distribution of electrical power to homes, businesses, and other facilities. It is important to understand the different components that make up a distribution system, including transformers, switchgear, and breakers. 

Proper maintenance and inspection of these components are crucial to ensure the system remains reliable and safe. Additionally, advancements in technology have led to the development of smarter and more efficient distribution systems, such as microgrids and renewable energy systems. As the demand for electricity continues to grow, it is important to continue to invest in and improve our electrical distribution systems to meet the needs of the future.

If you need commercial electrical services in Lethbridge, contact Passey Electric. Whether it be new construction or maintenance we have the tools and ability to help you with your needs.