This document provides information on neutral grounding resistors (NGRs) including their specifications, types of resistor elements, enclosures, and advantages. NGRs are used to limit fault current in power systems and are rated based on factors like system voltage, rated current, resistance value, time rating, and temperature rise. Common element types are wire wound and edge wound resistors made of stainless steel or alloys. Enclosures provide IP protection ranging from indoor to outdoor use. Key advantages of NGRs include a wide range of options, stable and predictable resistance, fast cooling, easy installation, low costs, and reliability.