Is it possible to power the Arduino Mega through an external power input, through a 5v 30A power supply?

Question

Arduino

Arduino controls a led strip that is connected to a power supply, I think to power the Arduino from the same block through the power cord, is it a good idea?

Answer 1

Can. Just in case, you can put a fuse at the input of the arduino if you are not sure of its quality.

Answer 2

You can only take into account such blocks are very noisy, it is desirable to add smoothing capacitors.