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#1
05-22-2011, 04:58 AM
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I just did the same thing with my dual ballast. I shut everything else off to see what it was drawing and I got 6.2 amps. I always thought ballasts would be more consistent. Maybe this topic deserves its own thread?
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour 
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#4
05-22-2011, 02:51 PM
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True, it is old but the amazing thing is there is not a whole bunch of discussions around it online. Sanjay Joshi seems to be the only one that has done any extensive research, he has published some really good articles. If you check other forums, there is mention of it but they don't go anywhere. I guess it's not as cool as the new LED trend, but overdriving MH bulbs with magnetic ballasts is interesting nonetheless.
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#5
05-22-2011, 03:48 PM
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In the case of some bulbs such as the radiums I run they fire to spec on hqi ballasts and aren't actually over driven. Not exactly going green using these ballasts but I love the output
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#6
05-22-2011, 04:35 PM
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hmmm.. I was wondering why I saw a subscribed post I didn't remember reciently LOL
a M80 ballast (true magnetic M80) which is only made by Advance transformers (north american company) should be pulling around 400 watts with a 250 watt SE bulb a little less with a DE bulb, at 310 watts I would say they put a M80 starter and capacitor on a pulse start ballast and used that. will be a little lower output this way (well a fair bit actualy) I am not saying thats what they did but I have seen that done. the other thing I saw once was a european ballast converted to NA voltage (easy to do) this gives different out put as they are not a HQI ballast but are simular. Steve
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