Electrical fields

I am thinking of moving my equipment rack to a different side of my listening room (which is in my basement). Just when I find the perfect spot, I realize it is only a couple feet from my house electrical breaker box (150amp service-power company meter in the basement next to the box). How far would I need to be, or what could I use to shield the box, to prevent any electrical field from it affecting my component rack/cable runs?

Thanks.
Art