A motor leakage current detector and/or a heat compensating circuit, devices using same and related methods are disclosed herein. Included are a uniquely wired current transformer to allow for polarity agnostic leakage current detection, a leakage current detector using same and having a notifier to alert a user. In other forms, an accessory power cord and power strip are disclosed capable of detecting early motor failure conditions. In still other forms, other machinery failure early warning systems are disclosed as are numerous motor operated devices using same including without limitation pumps.

A device for monitoring pump equipment may include a pump monitoring device comprising sensor devices configured to monitor the pump equipment, a controller configured to configure the sensor devices and collect sensor data from the sensor devices, and a wireless transceiver configured to communicate with a cellular base station. The device may further include a battery configured to provide power to the pump monitoring device; a solar panel; a charging system to charge the battery using the solar panel; and a chassis configured to secure the pump monitoring system, battery, solar panel, and charging system into a self-contained mobile monitoring device.