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Blue rectangular electronic ballast for fluorescent lamps

Fulham

Fulham WH6-277-L 5-140W 1-4 Lamps Electronic Ballast 277V

SKU CH-S1ZM-T90FT

Electronic fluorescent ballast runs one to four lamps from 5 to 140 watts at 277 volts

  • TypeTraffic & Parking Lot
  • Supports up to four fluorescent lamps for flexible installations
  • Operates from 5 to 140 watts covering a wide range of lamp powers
  • Instant start at 277 V AC delivers immediate illumination
  • Compatible with T5, T6, T8, T12 and circular bulb types
  • Starts reliably down to minus 22 degrees Fahrenheit

Electronic Ballast for Fluorescent Lamps

The Fulham WH6-277-L is an instant-start electronic ballast designed to operate one to four fluorescent lamps at 277 V AC. It supports a wide range of bulb types including T5, T6, T8, T12 and BX configurations with individual wattages from 8 W up to 85 W per lamp.

Installation Notes and Common Issues

Wiring follows standard instant-start topology; connect the line and neutral to the 277 V input and the lamp holders to the colour-coded outputs. The unit provides no dimming function, so dimmer circuits must be omitted. A frequent error is exceeding the 140 W total load or using unsupported lamp wattages such as 65 W which are not on the approved list.

Capacity and Operating Limits

The ballast handles a combined maximum of 140 W across all connected lamps and starts reliably down to -22 °F. It will not operate lamps above 85 W each or totals beyond 140 W, and it cannot dim or work with non-listed bulb types.

Highlights

  • Supports up to four fluorescent lamps for flexible installations
  • Operates from 5 to 140 watts covering a wide range of lamp powers
  • Instant start at 277 V AC delivers immediate illumination
  • Compatible with T5, T6, T8, T12 and circular bulb types
  • Starts reliably down to minus 22 degrees Fahrenheit

Specifications

BrandFULHAM
TypeTraffic & Parking Lot

Questions about this item

How can I verify the WH6-277-L ballast is operating correctly after installation?

Confirm each connected lamp illuminates instantly without flickering at the rated wattage, and that the unit starts reliably at the minimum starting temperature of -22 degrees F.

What components are included with the WH6-277-L and what must be purchased separately?

The package contains the electronic ballast unit only; compatible BX, DBX, T12, T5, T5-Circuline, T6, T8, or T8U fluorescent lamps must be bought separately.

Which lamp configuration should I select for the WH6-277-L given its supported wattages?

Choose a combination of one to four lamps whose individual wattages fall within the listed range of 8 W to 85 W, ensuring the total does not exceed 140 W.

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