A power monitoring system has a power monitoring device that couples to at least one conductor of a transformer and collect data indicative of power usage corresponding to the at least one conductor. Additionally, the power monitoring system may have a protective cover that may comprise a top plate having an arch-shaped back edge adapted to abut and conform with an outside surface of a transformer, a face plate integral with and extending from the top plate and mirroring the outside surface of the transformer, and a bottom plate integral with and extending from the face plate and having an arch-shaped back edge adapted to reasonably abut and conform with the outside surface of the transformer.