I have a 3 foot strip light that I converted into 2 lamp F15T8 a while back. When i use a magnetic ballast rated for them, it gets quite hot as well as the lamps, especially with BLB lamps.
Was wondering if a 2 lamp instant start ballast rated for two F17T8 to F32T8 would be okay to use to run two F15T8?
On a side note I have tried this before and it worked. Have also tried using 4 F15T8 on a 2lamp F17T8 - F32T8 ballast; with 2 sets of 2 lamps in series. and that also worked.