Abstract: Power monitoring devices, a converter therefor that may be installed in the field, and a kit comprising such a power monitoring device and a converter are disclosed herein. The power monitoring devices may include a housing enclosing circuitry having one or more processors to monitor parameters of a power system and having a plurality of conduits passing therethrough and an electrically conducting plate mounted in the housing in contact with each of the conduits to electrically ground the conduits. The power monitoring device may also include a class two input terminal block for powering the circuitry and a plurality of wires connected thereto that extend out of the housing through such that the device, before installation in the field, can be pre-configured.