What are Panelboards?
Panelboards are electrical distribution units that receive power and safely route it to circuits throughout a building.
Definition
Purpose
The main purpose of a panelboard is to distribute electrical power safely and efficiently to different circuits in a building. Each circuit can be protected by its own breaker, making it easier to control and isolate electrical loads.
Additionally, it offers overcurrent protetction and enables electrical technicians and maintenance teams to quickly locate, isolate, or service individual circuits.
Examples of Use
- A commercial building may use multiple panelboards to distribute power to lighting, receptacles, and equipment on different floors.
- In a residential project, a panelboard can serve circuits for rooms, appliances, lighting, and other household loads.
- HVAC systems may be supplied through dedicated circuits connected to a panelboard.
- Industrial facilities can use panelboards to distribute power to machinery, controls, and other equipment.
- During construction, electricians install and connect panelboards after determining the building's circuit and load requirements.
Related Terms
Notes
- Panelboards are generally installed where they can be accessed safely for operation and maintenance.
- Each circuit should be properly labeled so electricians can quickly identify what it serves.
- Panelboards have different sizes and configurations depending on the number and type of circuits they need to support.
- Panelboard locations and ratings need to be coordinated with the electrical plans and the building's expected loads.
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