Yep, same thing. Overdriving means connecting multiple leads of a ballast that can drive multiple bulbs to a single bulb. So for example you buy an electronic ballast that can drive 4 bulbs, and connect two of the four leads to one bulb.OK. Thanks for the replies!
How about using a 48" ballast to drive a 24" bulb? Same thing?
Not as long as non-overdriven bulbs. That's about as precise as one can be given that there are many bulbs, ballasts, and ways to overdrive.How long do overdriven bulbs last?