Let's say the internet goes out for a few days. Will the antminers still be using significant power or would they barely be using any (just enough to power the fan and standby mode)
Bitmain products not only keep using power, they use MORE power. Beware of overheating when you see all 3 pools "Dead".
Would be great if they had the power saving features any brand of cpu or gpu have nowdays, but they don't.
Do the test: disconnect the lan cable and observe the temperature values and fan speeds. Look at power usage too if you happen to have a kill-a-watt or such around.