I contacted the eBay seller about what power supply I would need to power the 5M cable they provided. They told me 12V 5A. After a little research it seems that this is wrong.
I read that 5050 LEDs draw 60mA per segment (3 LEDs per segment). There are 200 segments in this 5M strip, so 60mA x 200 = 12,000mA. Which would mean I would actually need a 12V 12A power supply. Unless the current draw from 5050 LEDs differ from different manufacturers?
I won't need this much current since I'm cutting off 3 individual 132.5cm strips from mine. Each strip has 159 LEDs, which equates to 53 segments (159 / 3). 60mA x 53 gives a current of 3180mA for one strip. The total current of all three is 9,540mA (3180mA x 3). So I guess this means I need a 12V 10A adapter? This is expensive though, so I am wandering, if I'm not powering them to white all the time, I could manage with less current?
I've already tested a 12V 5A adapter on the strips and it seems to work fine. It doesn't get hot or anything. I even tried a smaller section of strip to see if it was any brighter and it's seems to be the same brightness. Surely it should be brighter than using a longer strip??