One of these days I will get my accounts synced.
I measured my 16.4 strip 24volt BTF strip and got 1.65amps. That will not be a good idea with 3 in parallel off a 5amp supply unless you turned the dimmer down about 25%. PSUs don't like being run near their current limit for long periods. Comes out to just under 40watts, so good job BTF rating their product.
Amazon has gobs of 24volt 10amp supplies though.
I noticed no visible difference between the front or back of the strip. Front got a little warmer, which is to be expected, but no other issues. This a far cry from 12volt strips in the same current class like 5054's that get blazing hot. Proof again how 24volt rules. They were stupid bright and color quality was excellent.
BTF strips typically come with a cylinder plug, male/female on either end. Makes plugging them into a typical power supply real easy, and potentially adding another string in series. You could in theory do this, but 33 feet of 24volt LEDs seems a little desperate to me. At worst you have to cut the plug off and strip the two wires in the sheath so you can gang them.
Anytime you are stuffing 24volt in a tight, confined area there's that decimal point of risk. More than likely though you just decrease the lifespan of those LEDs that are confined. It won't affect the rest of the strip. A 2.5amp fuse might not be a bad idea for each strip, but you need to wire the in series with each strip. My .02$