BaileydePaor Posted January 29, 2017 Share Posted January 29, 2017 Hello I wonder does anyone know a top surface temperature of Fluorescent Tubes I was looking for a maximum of 58w T8 fittingMany thanks for any help Link to comment Share on other sites More sharing options...
adam2 Posted January 29, 2017 Share Posted January 29, 2017 Average under normal working conditions ? or worst case under fault, failure or misuse conditions ? The ends get hotter than the middle under both normal and fault conditions, or more accurately the very ends may be relatively cool but a few cm in from the ends is the hottest part. Copper iron control gear runs the lamps hotter than modern electronic ballasts. I have measured a surface temperature under normal operating conditions of about 50 degrees in the middle of a lamp and about 75 degrees at the hottest points near the ends. That was a 58 watt lamp on an electronic ballast in a warm room. Not certain what the upper limit under fault conditions is, but I have seen cases where the glass has softened enough to result in a pinhole being sucked into the glass. Link to comment Share on other sites More sharing options...
timsabre Posted January 29, 2017 Share Posted January 29, 2017 If you are asking this because heat is a problem. look at the LED fluorescent tubes which are now available - as bright if not brighter than a conventional tube and run fairly cool. Link to comment Share on other sites More sharing options...
BaileydePaor Posted January 30, 2017 Author Share Posted January 30, 2017 Hello Thanks for all the information ! I imagine the temperature may be increased in a luminescent environment (on a stage ** laughs out loud **). That's great was looking at high temperature cable to run behind the lamp, but LED are looking like a better option and connect at one end which should illeviate the problem although cables resistant to around 130deg arnt too expensive ! I'm surprised by how little information is out there. Managed to find a little proper research, but only regarding T5 lamps. Removing the need for ballasts will also remove a considerable cost ! Link to comment Share on other sites More sharing options...
timsabre Posted January 30, 2017 Share Posted January 30, 2017 Ledhut is a good uk supplier for the LED tubeshttps://www.ledhut.co.uk/commercial-led-lighting/led-tube-lights.html Link to comment Share on other sites More sharing options...
abbotsmike Posted January 30, 2017 Share Posted January 30, 2017 If it will be within reach of hands I guess you have to take that into account? Maximum touch temperature is usually 60 Degrees, and based on some of the tubes I've touched over time, they get hotter than that at the ends! Link to comment Share on other sites More sharing options...
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