  Classical geometric and topological operations on polyhedra, maps and
polytopes often give rise to structures with the same symmetry group as the
original one, but with more flags. In this paper we introduce the notion of
voltage operations on maniplexes, as a way to generalize such operations. Our
technique provides a way to study classical operations in a graph theory
setting. In fact, voltage operations can be applied to symmetry type graphs,
and more generally to n-valent properly n-edge colored graphs. We focus on
studying the interactions between voltage operations and the symmetries of the
operated object, and show that they can be potentially used to build maniplexes
with prescribed symmetry type graphs. Moreover, a complete characterization of
when an operation can be seen as a voltage operation is given.
