need some help on ballast

[trevally]

currently I have a 15 watt fl tube and intend to change to eballast. Due to out of stock of a 18 watt e ballast, I purchased a 22 watts e ballast. Will that be ok for the 15 watt fl tube ? Will it cause damage to the tube life in the long run ? thanks..

[xiggie]

think it will shorten the life of your tube ....

[nim75sg]

It's okay and won't shorten the life of the tube as the e-ballast can deliver max 22W power whereas in your case, it is "working" at about 81.82% of its capacity - 18W tube.

[trevally]

thanks bro. last night wired it up and it's better then those magnetic ballast.