An articulated-base mounting, with pinned connections for both ends of the post member, is a characteristic of a horizontal vee. For such an arrangement, the loads on the post component, neglecting eccentricity effects, are tension or compression loads. Provided any compression loads are below the load at which the post member starts to buckle, the application of ceramic or composite post insulators in horizontal vee assemblies is only limited by their respective compression (or tension) ratings.