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Originally Posted by adidas
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Yes they're fine. They're probably probe starts though. It's too bad they don't publish the ANSI code for those. Probe starts are M57, M58, M59 for 175W, 250W, 400W respectively; Pulse starts are M137/157 for 175W, M136/156 for 250W, M135/155 (I think) for 400W. Also there's HQI 250W pulse start M80 (uhh .. I think. I always get M80 and M81 mixed up. One is 250W and one is 150W).
Anyhow that's roughly the going rate for bare bones ballasts like that. Pulse-starts will cost a little more but not too much. You'll have to wire them up yourself and put them in a case yourself but that's not hard.
If you elect to go with pulse-starts make sure you get a long-distance ignitor .. the ones that come standard tend to be good for a ballast-to-lamp distance of 2', which is not very useful for our purposes.