I need to reattach an outside electrical box (not an outlet, but the main electrical box) to the house because it has come loose and tips and water is getting in causing lighting problems. I believe I have to call my power company to shut off power while I reattach the box to the house. Is there any reason I cannot reattach the box myself? What do I need to know? I would prefer not to have to pay an electrician to do it. Thanks for any help!