Workhorse 7 ballast
Product DescriptionFour red leads (36") and one yellow lead (36") plus black (120v), white (neutral) wires. Case ground. 120VAC/1.82A max draw. Size: 19.24" x 1" x 1.75", 33 oz.
This is one of the new generation ballasts, so doesn't have a fixed output, and instead the output depends on what you have connected to it. The benefit of this system is that you can power a great many lamps with this ballast; some which are certified, and some that are not but are common and tested. The amp draw will vary according to what you have connected as well. Some of the possible wiring configurations are:
4x F32T8 (1" diameter) comes out to around 44w each. Can probably power fewer, but wattage isn't tested in that configuration. Perfect match for this application.
4x F32T12 (1.5" diameter) Not fully tested, but seems to be around 45w when powering 4 of these.
6 foot lamps, 1.5" diameter: 3 in EHO mode, 4 in HO mode. Still need testing for other configurations, but two in VHO mode with double the red wires each is possible. Not nearly as strong as the SunHorse for powering these F71T12 lamps, but adequate.
Most people use this ballast to power four of the 4' lamps, which is a perfect balance of power and life for the lamps. Sometimes for longer lamps if you don't need maximum output for them, and it extends the life. Best all around ballast for powering 4 foot lamps. See the wiring diagrams for basic wiring info, it is a very easy ballast to wire up.
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