The Advance Centinum ballast is Nema Premium rated and will operate 3 or 4 F17T8, F25T8, F32T8(32W), F32T8(28W), F32T8(30W). This ballast will also run InstantFit LED T8 lamps. Parallel operation Instant Start. 5 Year warranty The old code ICN-4P32-SC was the Small Can version. Now the ICN-4P32-N is also the same size as the SC and has the N for Nema Premium.