An inductive wireless power transfer device comprising: a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance; a first magnetic core cap on the primary winding assembly and a second magnetic core cap on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly; and a multi-section high voltage isolator interposed between the primary winding assembly and the secondary winding assembly, the multi-section high voltage isolator including at least one individual insulator section comprising a dielectric material, and wherein the multi-section high voltage isolator including at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly, wherein the at least one individual insulator section of the multi-section high voltage isolator includes a core isolator portion extending along a first axis, between a first core isolator portion and an opposing second core isolator portion to define a core isolator height, and an outer isolator surface extending along a second axis, perpendicular to the first axis, to define a multi-section high voltage isolator width, wherein the at least one intermediate magnetic core includes a middle non-sectioned ferrite core embedded in the core isolator portion, wherein the middle non-sectioned ferrite core extends along the first axis, to define a ferrite core height, and extends along the second axis, to define a ferrite core width that is less than the ferrite core height. a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance; a first magnetic core cap on the primary winding assembly and a second magnetic core cap on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly; and a multi-section high voltage isolator interposed between the primary winding assembly and the secondary winding assembly, the multi-section high voltage isolator including at least one individual insulator section comprising a dielectric material, and wherein the multi-section high voltage isolator including at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly, wherein the at least one individual insulator section of the multi-section high voltage isolator includes a core isolator portion extending along a first axis, between a first core isolator portion and an opposing second core isolator portion to define a core isolator height, and an outer isolator surface extending along a second axis, perpendicular to the first axis, to define a multi-section high voltage isolator width, wherein the at least one intermediate magnetic core includes a middle non-sectioned ferrite core embedded in the core isolator portion, wherein the middle non-sectioned ferrite core extends along the first axis, to define a ferrite core height, and extends along the second axis, to define a ferrite core width that is less than the ferrite core height.