I usually shut them down and unplug the power strip(s) into which they're plugged. This disconnects the computer, printer, speakers, phone power, etc. Another one disconnects the TV, DVR, blueray, etc. This after losing phones, router, TV and other damage. The phone connection box mounted outside has been blown off twice and the wires from it back to the main lines fried once. The meter got damaged once as well.