Yea man. Ill be on laptop and hook you up with what I can shortly...
You can use any % up to 100. I also find that the meanwell drivers are usually very slightly underrated . For instance there are 240 watt models usually will push 245 to 250 Watts when cranked up . Many drivers/power supplies or devices similar actually run easier and cooler at 100%. A lot of devices like drivers and power supplies of various types actually will warm up more running at lower percentages of their rated output because they are trying to hold back. Does that make sense? They need to dissipate the power they are producing . Dissipating it through the lights is obviously the best way . I have ran my drivers for long periods of time at about 20% load and it seems to me that they get just as warm there as they do running at 80 - 100%. Now as far as adding the analog dimmer or potentiometer goes. What happens when you turn it all the way down really depends on the exact driver you pick and the amount of cob chips in the array. But for the most part by turning the 100k potentiometer all the way down you will simply shut off the lights and the driver will draw no more than two to three Watts from the wall outlet basically going into a standby so to speak. I'm sure he added the resistor that he needed in his situation so that when he turned the dimmer all the way down the lights were barely at the point of turning on. Basically instead of the dinner going from 0% to 100% it would go from 1% to 100%.
