The core function of a data center's electrical system is to provide quality and reliable power to critical components in the data center. In support of this, a variety of systems are used to monitor the status of electrical feeds and measure at various points in the distribution system. While generally effective, some opportunities for increased reliability and safety are overlooked by not considering Residual Current Monitoring, or RCM. This presentation will focus on RCM and the hardware and software offerings from Janitza integrated into a comprehensive solution for full data center electrical infrastructure monitoring.