Systems with port-Hamiltonian (pH) structure have several beneficial properties, such as power balance and passivity. Moreover, the interconnection of pH systems results in a system that preserves the pH structure. Recently, an energy-based pH framework for field/circuit coupled systems has been proposed. The framework enables the pH structure to be proven for systems containing both field models and circuits, for example in the three-phase transformers. The goal of this project is to show the effectiveness of the proposed framework for systems containing foil conductors. This necessitates implementing a structure-preserving interconnection for the foil conductor model.