I'm making an LED matrix with a board and 4X WS2811 strips (5 m length, 150 LEDs). Each strip is 45 W, takes 12 V and is 3.75 A. I have connected them in series and injected a 12 V, 60 W/5 A adapter for every strip. It's powered by an Arduino Uno and all grounds are connected to the ground in the Arduino.
My question is, can this safely be power on from a single household outlet? I believe here in Canada each outlet can handle 15 A. So if this is true, is it unsafe to power all of these from a single outlet? The reason I want it to come from a single outlet is because I can turn on all adapters at the same time from the switch on my power bar.
If this is not possible, can the adapters be spread out from different outlets and simply turned on by connecting or disconnecting the Arduino?