5.1.4 Application of measuring instrument Tests are conducted using one of the measuring instruments in Annex D, or any other circuit giving the same results.Terminal B of the measuring instrument is connected to the earthed (neutral) conductor of the supply (see Figure 5A or 5B).Terminal A of the measuring instrument is connected as specified in 5.1.5. For an accessible non-conductive part, the test is made to metal foil having dimensions of 100 mm by 200 mm in contact with the part. If the area of the foil is smaller than the surface under test, the foil is moved so as to test all parts of the surface. Where adhesive metal foil is used, the adhesive shall be conductive. Precautions are taken to prevent the metal foil from affecting the heat dissipation of the equipment. NOTE 1 The foil test simulates hand contact. Accessible conductive parts that are incidentally connected to other parts are tested both as connected and disconnected parts.NOTE 2 Incidentally connected parts are described in more detail in Annex C of IEC 60990. 5