This paper describes an advanced PSpice® model, which is used to complement the experimental work on explosive flux compression generators . This work is conducted at Texas Tech University in the framework of a MURI program. The results from the model are compared to actual results from generators that have been tested in our laboratory. To achieve better fidelity of the model, the effect of transient current diffusion into the conductors of the generator is modeled by using a ladder network with many concentric layers of each current carrying conductor . For the optimum accuracy, the spacing of the concentric layers is closest at the surface of the conductor. The paper shows results, comparisons with experimental data and applications of the model for the design of power conditioning systems for MFC-Generators.