Can I power (2) x 5 meter 150 LED power strips with a single 20 amp power supply?
The question is can I use just 3? (two strips on one power supply
Also, if you use one power supply, you will have to "inject" power along the strip. My suggestion is to insert power every 5m.
You'll need to tie all the grounds together if you use different power supplies.
Another thing to consider is that 25 meters is a long run and depending on how you plan to have everything wired up, apa102s or ws2811s might be more reliable because they have a dedicated clock line an arnt so dependent on tight timing, like ws2812/13.
If you are going to be running jumpers in between the strips i would use twisted pairs with a ground in each of the pairs (one for clock, one for data).
I am using 45 meters of 12v 2811 strip for my project. (eve lighting) I am running it in a meanwell 100amp power supply. I fused the power supply at 60 amps, then each branch is fused at 5 amps.
Please convince me if I really need to run a 5m power copper line segment next to one of the strips for the one area I can't really get a dedicated power supply to after reading this plan.)