Ground Fault Interrupter GFI’s are designed to protect from electrical shock by interrupting a household circuit. Sometimes called a circuit breaker of RCD adapter. Related CoursesRelated CoursesRelated Courses SP3801Installing Premises Cabling Systems NETCONNECT ACT IMore Info SP3802SYSTIMAX MasterClass D&E & I&M RecertificationsMore Info SP3801RInstallation Recertification Training NETCONNECT ACT IMore Info