Is there any circumstance when it is (N.E.C.) legal to run a wall-mounted flat panel's power cable in the wall to an outlet below? Does an outlet need to be installed when it may be a "temporary" apartment install? What if the association overseeing rental unit installs does not want to pay for an electrician every time a tenant requests to have a plasma or LCD mounted? Also, is it necessary to include surge protection when plugging into a new outlet behind an on-wall display? How is that best done?