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Fulham WorkHorse 3 Electronic Ballast, 120 Volt

SKU: WH3-120-L | Ordering Code: WH3-120-L  | UPC: 872180100210

$21.49 per Ballast
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  • Ignites up to two 4-Pin lamps

Fulham Brand WorkHorse 3 Electronic Ballast, 120 Volt, with Leads. Ten ballasts operate 132 lamps in 860 combinations.  Ballast Lamp Starting Mode:  Instant Start.

WH3-120-L Fluorescent Ballast Ignites:

  • Circline:  One 20W - 40W
  • T5 Circline:  One 22W - 55W 
  • T5 HO:  One/Two F24HO - F54HO 
  • T6 Linear:  Two F42
  • T8 Linear:  One/Two F13, One F14 - F40, Two F15 - F32
  • T8 HO:  One F48HO - F72HO
  • T10 Linear:  One F40
  • T12 Linear:  One F14 - F84, Two F15
  • Twin:  One 13W - 55W, Two 13W - 24W
  • Flat Quad:  One 18W - 36W, Two 24W
  • Quad:  One 26W, Two 18W - 26W
  • Triple:  One 26W - 42W, Two 18W
  • 2-D:  One 28W - 38W, Two 21W - 28W
Full Specs



Input Volts


Input Watts


Number of Lamps


Ballast Factor

The percentage of a lamp's rated lumen output that can be expected when operated on a specific commercially available ballast. For example, a ballast with a ballast factor of 0.93 will result in the lamps emitting 93% of their rated lumen output. A ballast with a lower ballast factor results in less light output and also generally consumes less power.
Ballast Factor
0.69 - 1.18

Ballast Type

Magnetic ballasts are a legacy technology and use inductance to transform the line voltage to the voltage required to "fire" or excite the gasses in a lamp. Electronic ballasts use a variety of starting methods, and are more efficient than magnetic ballasts in converting input power to the proper lamp power and operate fluorescent lamps at higher frequencies, resulting in an overall lamp-ballast system – increasing efficacy 15% to 20% over a magnetic equivalent.
Ballast Type

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Width (in)

For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
Width (in)

Height (in)

For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.
Height (in)

Power Factor

0.91 - 0.94

Lamps by Wattage

1x13W-84W, 2x13W-32W


5 years

Ballast Lamp Type

The type of bulb the ballast can fire.
Ballast Lamp Type

Maximum Current (Amps)

The maximum amount of Amps that a ballast can hold.
Maximum Current (Amps)

Maximum Load (Watts)

The maximum power that a product can handle.
Maximum Load (Watts)

Start Type

For Ballasts, indicates the method the ballast uses to start its bulbs. HID ballasts can be Probe or Pulse start. Fluorescent ballasts can be Rapid, Instant or Programmed start. For HID and Fluorescent bulbs, indicates the start-type of ballast that the bulb will work with.
Start Type
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Customer Reviews


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Fulham WorkHorse 3 Electronic Ballast, 120 Volt

(based on 1 review)

Reviewed by 1 customer

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  • Easy To Install
  • Quality Construction


    Best Uses

    • Repair or replacement

    Comments about Fulham WorkHorse 3 Electronic Ballast, 120 Volt:


    • Primary use:
    • Business

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    Q & A

    Do you have questions about this product?

    Get answers from real customers and in-house experts with AnswerBox.

    1 Question | 1 Answer
    Displaying question 1
    • Q:

      Does this work with a one pin F42T6-CW?
      Asked on 4/20/2013 by Bartender from Alexandria, Ontario

      1 answer

      • LS1 Certified Lighting Specialist


        Yes, this ballast will operate two F42T6 lamps. A workhorse 2 will operate one F42T6.

        Answered on 4/22/2013 by Anonymous
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