Side by side FEM 3-D magnetic field comparison using ANSYS Maxwell and Surfer Voxler to simulate BIM EMF Modeling of unshielded and shielded MER with 75% energized transformers, network protectors, secondary feeders, switchgears, and distribution panels. Constructing electrical distribution model in ANSYS Maxwell, generating 3D simulation of 60 Hz magnetic field model, importing Maxwell 3-D with Revit/Navisworks building simulation models into Voxler to generate 3-D animation requires weeks of computational and programming time. Although the unshielded and shielded FEM 3-D animation looks impressive it is labor intensive to modify and implement small electrical and building design changes into the large and complex BIM model and re-simulate to generate another 3-D animation to evaluate EMI impact.