Can One Use 20w Fluorescent Tube Lamps As A Substitute To 40w Lamps?
Posted by China Sourcing CommentatorFeb 26
I bought a second hand, mini sun bed to sustain a few bonsai trees, this winter, indoor. The sun bed has a build in ballast to power 6X40W fluorescent lamps, thus a 240W system (220V~50Hz). Unfortunately the UV-lamps do not emit the best spectrum needed for cultivation and growth. The lamps I need to replace the UV-lamps with, has to be 590mm in length, but the highest wattage, available in this length is 20W. I plan to keep 2 of the UV lamps in the system. I want to know if I am going to blow the 20W lamps by I replacing the old 40W lamps. If so, why?
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If you are going from 40Watts down to 20 Watts, you’ll be fine. It’s bulbs that have a higher wattage than is recommended for your lamp that start blowing things up and setting things on fire.
Yes they will work if they fit the fixture…. They will only draw the 20 watts they need to operate, so No, you will not blow the 20W lamps….
Ensure however that the lamps you will be using are rated for 220 volt operation… I am guessing you are in Europe since you mentioned the 220V ~50Hz so that shouldn’t be a problem.
Should be fine.