text:  big switch a big weatherproof switch that you can turn off if you are going to clean that outside unit the first thing you do is you turn that off you don't want it turning on while you're doing this and you don't necessarily need electricity flowing in there but what you do is you turn that off so go up to that rocker switch or that wire handle or whatever it is maybe it's a panel with a breaker in there turn that off and close it up