FAQs > PERFORMANCE > How do I use power limiting?

How Do I use Power Limiting?

Power limiting enables a facility to drop a portion of the wattage used by the lighting system. For example, during summer months when HVAC compressors are running at high levels, reducing the active power level of all lights (for example, from 100 to 90) is an effective way to temporarily limit total facility power consumption. This practice may be especially beneficial when a facility is facing peak demand surcharges or demand-response calls from electrical utilities.

Use the following method to perform power limiting:

  1. Create and activate a manual profile for a portion of the facility that reduces the active power level, starting with a reduction of 10.
  2. Using a light meter, evaluate the new illumination level. Ensure the new illumination level is adequate to meet facility operations safety requirements.
  3. If the illumination level is adequate, try reducing the active power level by another 5 and then re-evaluate.
  4. Repeat the process until the maximum reduction is achieved.

    Tip: Click the gang toggle next to multiple zones, and then use a single slider to make simultaneous changes across those zones (instead of changing them one-by-one).

  5. Apply the final settings across all zones.
  6. Activate the manual profile for a measurable period of time and then run LightRules reports s to compare the reduction in both energy use and cost.
  7. Save the manual profile and energy metrics for future use.

Last modified: August 09, 2016 11:42:40 AM