What is the specific measurement method for energy consumption in the US ceiling fan energy efficiency labeling rules?

1. Labeling requirements of the Federal Trade Commission (FTC) for ceiling fan energy consumption
Labeling content: The new labeling regulations require the energy consumption of the fan when running at high speed (in "watts"). This means that the energy consumption of the ceiling fan when running at high speed must be clearly marked on the energy efficiency label of the ceiling fan, in watts.
Effective scope: The new requirements are effective for ceiling fans produced on or after January 2009. This ensures that newly produced ceiling fans can meet stricter energy efficiency standards and provide consumers with more energy-saving product options.

2. Energy consumption measurement method
Although the specific energy consumption measurement method is not clearly mentioned at present, some possible measurement ideas can be inferred from the relevant regulations.
Relationship with other parameters: The new labeling regulations also require the airflow per cubic foot per minute when the fan is running at high speed, the power of the fan when running at high speed (in watts/cubic feet/minute), and the power range of standard-sized fans on the market when running at high speed announced by the FTC. There may be a certain correlation between these parameters and energy consumption. For example, by measuring the airflow and power of the fan when it is running at high speed, the energy consumption can be indirectly calculated. The specific calculation formula may need to be determined based on relevant physical principles and industry standards.
Reports that manufacturers need to submit: The regulations require manufacturers to affix the specified labels on the product packaging and provide the above information in paper and online product catalogs. Manufacturers are also required to submit a report to FIE with the application sample, including high-speed airflow, energy consumption, and high-speed airflow power. This indicates that manufacturers need to measure the energy consumption of ceiling fans during the production process and report the measurement results to relevant agencies. Manufacturers may use professional testing equipment and methods to ensure the accuracy of the measurement results.

In summary, the US ceiling fan energy efficiency labeling rules clearly require the labeling of energy consumption, but the specific measurement method is not detailed. However, it can be inferred from the relevant regulations that the measurement of energy consumption may be related to the parameters of the fan such as airflow and power, and manufacturers need to measure and submit reports on energy consumption. These regulations are intended to improve the energy efficiency of ceiling fans and provide consumers with more energy-saving product options.