250
250w ballasts for grow lights can operate up to 250w high pressure sodium (HPS), metal halide (MH), and Conversion grow lamps, depending on their specifications. Digital (electronic) ballasts use circuitry in place of transformers, capacitors, and ignitors that traditional magnetic ballasts have. Magnetic ballasts often run warmer than electronic ballasts, and they require slightly more power (approximately 5% more wattage) to drive the same wattage bulb as an electronic ballast, yet they are often less expensive in terms of upfront cost.
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Lumatek Electronic Ballast -- 250W 120/240V (Standard Plug)
$115.14MSRP:$164.95 -
Phantom 250W Digital Ballast, 120/240v
$116.41MSRP:$164.95 -
SG 250W 120/240v HPS Ballast
$113.36MSRP:$149.95
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