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View Full Version : 400w MH only using 190 watts


epicentyr
09/16/2006, 03:53 PM
I just bought a Kill-a-watt meter and was testing my MH ballast and the 400w ballast is only using 190 watts. the ballasts are 2 years old m59 and the light may be dimmer than when new. Could he ballasts be failing? the lights still fire right up but they could be brighter.