Frequently asked questions

  • How do I change the wattage setting?

    A wattage selector switch is located on the back of the driver compartment. Move the switch to one of 3 labeled positions (90W, 120W, 150W). The change takes effect immediately on power-on. Document the setting on the installation log for warranty and rebate tracking.

  • Does the wattage setting affect warranty?

    No. All 3 wattage settings are factory-tested and warrantied identically. The 5-year warranty applies regardless of which mode the fixture is operated at.

  • Can I change the wattage during operation?

    No. Wattage must be changed with the fixture de-energized (power off, allow 30 seconds for capacitors to discharge). Changing wattage while powered can damage the driver and voids the warranty.

  • How does utility rebate work with adjustable wattage?

    Utilities calculate rebate based on the connected load (the wattage setting at installation), not the maximum capacity. If you install at 90W, you claim 90W rebate; at 150W, you claim 150W rebate. Most utility programs use the lower of the spec sheet maximum and actual installed wattage. Document your installed wattage with your rebate application.

  • What's the difference vs the HB Black Series?

    The Black Series is a fixed 150W fixture in a black housing — slightly lower price, no wattage flexibility, classic commercial industrial look. The White Series is the adjustable-wattage version in a white housing — typically priced 5–10% higher but worth it for any project with uncertain wattage requirements or aesthetic preference for white.

  • Is the white finish the same powder-coat as competitor brands?

    Yes. The white powder coat is RAL 9003 (signal white), the standard architectural white used across the industry. It's UV-resistant and color-stable for outdoor applications, though we recommend the Black Series for direct outdoor exposure.

  • Can I use this on a 277V three-phase commercial circuit?

    Yes. The driver accepts 100-277V AC, covering all single-phase and three-phase commercial wiring including 277V phase-to-neutral, 240V split-phase and 208V three-phase. For 480V industrial circuits, use our high-voltage variant (contact sales@ggjia-led.com).

  • How does this work with a 0-10V dimmer?

    Connect the violet (positive 0-10V) and gray (negative/0V) leads to your 0-10V dimmer or BMS. The fixture dims smoothly from 1% to 100% of the selected wattage setting. For example, at 150W setting with 50% dimming, actual power consumption is 75W.

  • Can I daisy-chain multiple fixtures on a single dimmer?

    Yes. A standard 0-10V dimmer typically supports 10–20 fixtures on a single control loop. The GGJIA 0-10V Dimmer Switch supports up to 20 fixtures per zone. Beyond 20 fixtures, use multiple dimmer zones or a centralized BMS controller.