The transformer heats greatly and cut after 5 minutes if using white light with maximum brightness. After searching on the internet a 5050 type RGB tape consumes 10W per meter of LED used, I have 2 meters either 20W + 10% margin, so it takes a minimum of 2.2A transformer that here operate normally (a 3A would be ideal ) and on my own power output is 1A !!! therefore normal that heats here and here cut.