Reply by tefinn

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Posted on Lighting: Help me understand the difference between T8 and T12

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1222 posts in 3499 days

#1 posted 01-12-2014 05:33 PM

Joe – It’s very easy. All you need to do is cut the wires on the old ballast (after you turn the power off of course) and connect the wires to the new one using the diagram that comes with the ballast. Blk to Blk, Wht to Wht, One Blue to one tube end, the second Blue to one end of the second tube and Red to the opposite end of both tubes. The new ballast’s have no Yellow wire. Now each tube is wired independent of the other, so if one goes out or is removed, the other stays lit.

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

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