What are Transformers?
Transformers are electrical devices that change voltage levels to safely distribute power throughout a building or construction project.
Definition
Purpose
A transformer provides the right voltage for different electrical systems and equipment. By stepping voltage up or down, it helps properly distribute power while keeping electrical equipment operating within its required voltage range.
Transformers also help connect a building's electrical system to the utility supply and distribute power to downstream equipment such as switchboards, panelboards, lighting systems, HVAC equipment, and other loads.
Examples of Use
- Transformers are used in commercial buildings to reduce incoming utility voltage to levels suitable for the building's electrical distribution system.
- In industrial facilities, transformers supply the voltage needed for large equipment, machinery, and production systems.
- Construction sites may use temporary transformers to provide power for tools, lighting, temporary offices, and other site equipment.
- Transformers can also be used with specialized systems where equipment requires a specific voltage that differs from the building's main electrical supply.
Notes
- Common types include dry-type transformers and liquid-filled transformers, with the choice depending on the application and installation environment.
- Transformer size and capacity are selected based on the building's electrical load and future requirements.
- Transformers are typically coordinated with switchboards, panelboards, disconnects, and other electrical distribution equipment.
- Proper transformer installation requires attention to clearances, ventilation, grounding, protection, and applicable electrical codes.
- Transformers can be installed indoors or outdoors, depending on the project requirements and transformer type.
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