LED panel driver failed, housing partially melted

[Kjelt]

Concerning overrating the drivers there is another thing to check: efficiency.
Most SMPS are the most efficient almost at the top of their rating, if you overrate it twice you might loose 10% or more efficiency so check the specs of the driver efficiency at the desired operating power.

[bookaboo]

http://www.mouser.com/ds/2/260/HLG-320H-spec-226092.pdf

On page 5 you can see the meanwells are pretty flat in their efficiency down to about 40% load and from there only drop 10% efficiency all the way down to 10% load.
I like using 0-10V control versions as you can do some neat projects with standby presence and ambient light detection.

[eug]

Thanks Kjelt and bookaboo. Meanwell's FAQ recommends 30% overhead. Since the LED strips aren't used frequently I went for one 320W (~40% overhead) and one 240W (~20% overhead). At least if the 320W one flickers when switched off, I'll know if the 240W will fix it!

[eug]

Just thought I'd mention, both the 240W and 320W ones work perfectly. No more flashing when switched off. Now, to see how long they both last!