If the driver is located on the LED panel, then there is definitely a risk of a capacitor failing if the temperatures go up to 100C. Whether the enclosed space will reach that temperature is dependent on the LED wattage and insulation.
A good driver module should have internal temperature sensors that do thermal shutdown if something gets too hot, but you never know what features a driver has without looking at the part number or schematic. I heard Mars Hydro uses Meanwell Drivers, and they have a thermal shutdown page, but you have to check if the actual model used has this feature:
https://www.meanwelldirect.co.uk/glossa ... rotection/
IMO fire or not, without cooling an enclosed space can easily reach 35-40C and cook any plants inside.
I recommend a failsafe, such as a temperature monitor that will cut the mains power if it detects an abnormal temperature. Plants can survive fine in the dark for days, giving you time to come back to fix the issue.
Apollyon wrote:Do they consistently cut the plant down when a node activates? Idk. I'm talking about the ones who grow massive species like Rajah or Macrophylla.
I think those plants grow so slow that once it gets to the point of being too big you'll have plenty of time to figure out a solution. Plus if it outgrows a large terrarium, then the plant itself is probably worth so much money that you might as well invest in another bigger terrarium just for the plant