This article explores (1) how to carry electrical currents on the CFRP structure using non-bolted metallic conductors, (2) the current capability of a fastened junction between an element representing an A/C skin (CFRP+ECF) and a metallic element representing an A/C frame and (3) how the AC is distributed in the presence of fasteners. For all cases (1)/(2)/(3), tests were carried out; additionally, in case (3) simulations were also performed. Precisely, in each (1)/(2)/(3) case, following use case were tested: (1) Transferring currents in the internal CFRP structure: ● Use of co-cured and co-bonded copper foil (2) Current capability of the junction: ● Different countersank fastener installation (3) Current distribution: ● A test varying the frequency of the AC from 50 to 5000 Hz was performed Following relevant magnitudes were recorded in the junctions during the tests: Figure 1 - Example of installation of metallic strips on A/C ● Electrical resistance ● Thermal elevation for a permanent injection current ● Thermal elevation for a sudden injection of current ● Current distribution among the fasteners Furthermore, in case (3), simulations have been performed in order to analyze the behaviour of the current distribution in the bolts. The simulated model represents the fastened junction between the skin (metal or CFRP) and a metallic frame, with a cable running parallel to the skin and perpendicular to the frame. A current is injected in the cable to the metallic frame and extracted through the skin.