Introduction
The Lutron NF-10-277-WH is a 1-pole slide dimmer switch designed for fluorescent lighting applications operating at 277V. This dimmer allows for precise control of light levels, enabling users to slide up to brighten and slide down to dim. Its robust design ensures reliable performance and includes features like adjustable low-end trim for optimal lighting customization.
This manual provides essential information for the safe installation, operation, and maintenance of your Lutron NF-10-277-WH dimmer switch.
Safety Information
WARNING: To avoid fire, shock, or death, turn off power at the circuit breaker or fuse box and test that power is off before wiring. Installation must be performed by a qualified electrician in accordance with all local and national electrical codes.
- Do not use with non-dimmable fluorescent ballasts, incandescent, LED, or other non-fluorescent loads.
- Use only with compatible 277V fluorescent dimming ballasts.
- Ensure the dimmer's maximum capacity of 8A (1000W) is not exceeded.
- Ground the dimmer in accordance with all local and national electrical codes.
- Do not paint the dimmer.
- For indoor use only.
Package Contents
Verify that all components are present before beginning installation:
- Lutron NF-10-277-WH 1 Pole Slide Dimmer Switch
- Wire Nuts (included for connections)
- Installation Guide (this document)
- Wall Plate (not included, sold separately)
Setup and Installation
Follow these steps carefully to install your dimmer switch:
1. Prepare for Installation
- Turn Off Power: Locate the circuit breaker or fuse that supplies power to the switch location. Turn it OFF. Verify power is off by attempting to turn on the light controlled by the switch.
- Remove Existing Switch: Carefully remove the wall plate and unscrew the existing switch from the wall box. Gently pull the switch out to expose the wiring.
- Identify Wires: Identify the line (hot), load (to fixture), and ground wires. If you are unsure, consult a qualified electrician.
2. Wiring the Dimmer
The Lutron NF-10-277-WH dimmer uses screw terminals for connections. Use the included wire nuts for secure connections.
- Connect the line (hot) wire from the wall box to the designated line terminal on the dimmer.
- Connect the load wire (to the fluorescent fixture) from the wall box to the designated load terminal on the dimmer.
- Connect the ground wire from the wall box to the green ground screw on the dimmer.
- For 1-pole applications, ensure only these three connections are made.
- Note: This dimmer is designed for 1-way circuit types.
Image: Front view of the Lutron NF-10-277-WH 1 Pole Slide Dimmer Switch. It is a rectangular white dimmer with a vertical slide control in the center, featuring the "LUTRON" logo embossed on the slider. The overall dimensions are approximately 3.7 x 5.9 x 5.5 inches.
3. Mounting and Finishing
- Carefully fold the wires and push the dimmer switch into the wall box.
- Secure the dimmer to the wall box using the provided mounting screws.
- Attach the wall plate (not included) over the dimmer.
- Restore Power: Turn the power back ON at the circuit breaker or fuse box.
Important Note: No derating is required if this dimmer is ganged with other devices in a multi-gang wall box.
Operating Instructions
The Lutron NF-10-277-WH dimmer provides intuitive control over your fluorescent lighting:
- Turn On/Off: The dimmer features a tactile control method. Push the slide control fully up to turn the lights on to full brightness. Push it fully down to turn the lights off.
- Dimming: To brighten the lights, slide the control upwards. To dim the lights, slide the control downwards.
- Adjustable Low-End Trim: This dimmer includes an adjustable low-end trim feature, typically located behind the wall plate or on the side of the dimmer. This allows you to set the minimum light level to prevent flickering or ensure stable operation at low dimming levels. Refer to the detailed instructions provided with the dimmer for specific adjustment procedures.
Maintenance
The Lutron NF-10-277-WH dimmer switch requires minimal maintenance.
- Cleaning: To clean the dimmer, wipe it with a soft, damp cloth. Do not use chemical cleaners or abrasive materials, as these may damage the finish.
- No User Serviceable Parts: There are no user-serviceable parts inside the dimmer. Do not attempt to disassemble or repair the unit.
Troubleshooting
If you experience issues with your dimmer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lights do not turn on. | No power to the dimmer; incorrect wiring; incompatible ballast/fixture. | Check circuit breaker. Verify wiring connections. Ensure fluorescent ballast is dimmable and compatible with 277V. |
| Lights do not dim or flicker at low levels. | Incompatible ballast; low-end trim not adjusted; dimmer overloaded. | Ensure ballast is dimmable. Adjust the low-end trim setting. Verify total wattage does not exceed 1000W (8A). |
| Dimmer is warm to the touch. | Normal operation; dimmer is dissipating heat. | This is normal for dimmers. If it feels excessively hot or smells, turn off power and consult an electrician. |
If the problem persists after attempting these solutions, contact Lutron customer support or a qualified electrician.
Specifications
| Attribute | Detail |
|---|---|
| Model Number | NF-10-277-WH |
| Brand | Lutron |
| Operation Mode | Slide Dimmer |
| Lamp Type | Fluorescent |
| Switch Type | 1-Pole |
| Voltage | 277V AC |
| Max. Capacity | 8A (1000 Watts) |
| Color | White |
| Wall Box Size | Single Gang |
| Standards | UL1472/CSA C22.2 184.1 |
| Connector Type | Screw Terminals |
| Circuit Type | 1-way |
| Actuator Type | Slide |
| International Protection Rating | IP54 |
| Item Dimensions (L x W x H) | 3.7 x 5.9 x 5.5 inches |
| Item Weight | 14.4 ounces |
| Manufactured In | United States |
| UPC | 695971241868 |
Warranty Information
Lutron products are designed for reliability and performance. For specific warranty details regarding your NF-10-277-WH dimmer switch, please refer to the warranty statement included with your product packaging or visit the official Lutron website. Keep your proof of purchase for warranty claims.
Customer Support
If you have any questions or require assistance with your Lutron NF-10-277-WH dimmer switch, please contact Lutron customer support:
- Website: www.lutron.com
- Phone: Refer to the Lutron website for regional contact numbers.
When contacting support, please have your model number (NF-10-277-WH) and purchase information ready.