Understanding Commercial Electrical Panels: Key Components and Functions

Electrical systems are vital for any commercial building. Central to these systems is the commercial electrical panel. This panel acts as the heart, channeling electricity throughout the structure. In this blog, we’ll dive into the nuts and bolts of what we do at Cache Valley Electric with these panels, explaining their types, features, and key components.

1. Types of Electrical Panels

There are several types of commercial electrical panels, including:

  • Breaker Box: This is the most common type used in commercial setups. They come with a circuit breaker panel that trips when there’s an overload or short circuit, preventing an electrical fire.
  • Fuse Boxes: Old school, yet still present in some older establishments. Instead of tripping like a breaker, the fuse burns out.
  • Transfer Switches: These are primarily used in places with backup generators. When there’s a power outage, they automatically switch to the backup power source.
  • PLC Control Panel: Standing for “Programmable Logic Controller“, this type controls automated industrial equipment.

The types of electrical panels used might vary based on national electrical code recommendations, a building’s electric load, and specific requirements.

2. Features of a Panel

A commercial electrical panel box is typically defined by its electrical panel dimensions and commercial electrical panel sizes. Sizes can range from 100 amps to 200 amps or more, indicating the capacity of electricity it can handle.

The features to look for include:

  • Panel Sizes: Ranging from 100 amps for smaller commercial setups to 200 amps or more for larger establishments.
  • Number of Circuit Slots: To accommodate various branch circuits.
  • Safety Mechanisms: To prevent overload and potential fires. For instance, when a breaker trips, it’s a safety feature in action.

3. Functions of the Electrical Panel

The main purpose of a commercial breaker panel is to distribute electricity from a single source to various branch circuits throughout the building. Functions include:

  • Protecting circuits with breakers or fuses.
  • Providing a centralized spot for electrical meter reading, which measures power usage.
  • Offering a quick shut-off point during emergencies.
  • Meeting national electrical code requirements for safety and functionality.

4. Components of a Panel Board

Opening up a commercial electrical panel, you’d notice several components:

  • Breakers/Fuses: Safety devices to stop the flow of electricity in case of overload.
  • Bus Bars: Conductive bars that distribute electricity to branch circuits.
  • Main Lug or Main Breaker: The main point where electricity enters the panel.
  • Lug Panel: An arrangement where cables attach directly without a main breaker.
  • Grounding Wires: Wires that provide a direct path to the earth, offering protection from electrical faults.

5. Why Upgrade Your Electrical Panel?

Commercial spaces often grow and evolve, demanding more power for additional equipment. Sometimes, the existing commercial electrical panel sizes may not suffice. Here’s when you might require an electrical upgrade:

  • If you’re adding significant electrical loads.
  • The panel is old, using outdated fuse boxes instead of modern breakers.
  • Regular tripping of breakers, signaling the panel is reaching its capacity.
  • For enhanced safety and to meet updated national electrical code standards.

Conclusion

Every commercial building’s electrical system relies heavily on a well-maintained and adequately-sized electrical panel. While the home’s electrical panel might be simpler, commercial electrical setups often require more significant and more complex panels to handle the load.

If you notice signs like frequent breaker trips or if you’re planning to expand your business operations, it might be time to upgrade your electrical panel. Always prioritize safety, ensuring you’re protected from potential hazards like electrical fires. And remember, when in doubt, consult with a professional about your specific needs. Whether you’re considering new electrical panel dimensions, exploring types of commercial electrical panels, or just ensuring you’re up to code, the heart of your electrical system deserves the utmost care.

At Cache Valley Electric we focus on excellence—the highest quality work always completed with integrity, performance, and precision.