Wherein this chapter certain powers are conferred upon the Board of Zoning Appeals, such Board shall study the specific property involved and the neighborhood, cause the property to be posted in a conspicuous place, hold a public hearing, consider all testimony and data submitted and hear any person for or against the application or appeal. However, the application shall not be approved where the health, safety, security, morals, or general welfare would be adversely affected or would result in dangerous traffic conditions or would jeopardize the lives or property of people living in the neighborhood, nor will any action be taken which will be contrary to an adopted plan. (When a question arises as to whether the contemplated action of the Board is contrary to an adopted plan, the Board shall request the advice of the Planning Commission.)