According to Chap. 17, Vol. 1, of Titanic, the Ship Magnificent, by Bruce Beveridge, Titanic had about 10,000 incandescent lamps (bulbs). They ranged from 16 to 25 candlepower, with 16 being the most numerous. (1 candle = 4 pi lumens.) I don't know of a source for the candlepower of specific lamps. I'm just curious: why are you asking?