6.1.3 Use of measuring networksAppropriate measuring electrodes (see 5.2), measuring network (see 5.1) and measuring device (see G.4) shall be used in accordance with the appropriate systems of Figure 6 to Figure 14 (see 5.4) to make measurements of TOUCH CURRENT between simultane ously accessible parts, and between accessible parts and earth.The terminal A electrode shall be applied to each accessible part in turn.For each application of the terminal A electrode, the terminal B electrode shall be applied to earth, then applied to each of the other accessible parts in turn.For power system with an earthed power conductor, the terminal B electrode may be connected directly to the earthed power conductor at the interface of the EUT and the power supply, instead of being connected to the protective conductor. This connection may be used even though the voltage difference between the protective conductor and the earthed power conductor is more than 1% of the line-to-line voltage (see 4.2).