How is the grounded conductor typically connected to the service disconnecting means enclosure?

The grounded conductor is typically connected to the service disconnecting means enclosure using a system bonding jumper. This connection serves a critical purpose in ensuring the safety and proper functioning of the electrical system. The system bonding jumper provides a continuous path that connects the grounded conductor to the grounding electrode system, which helps to safely direct fault current away from the system and prevent electrical shock hazards.

The bonding jumper also establishes a solid connection between the neutral ground system and the service disconnect, helping to maintain the correct voltage levels within the system and ensuring that overcurrent protection devices can operate effectively during fault conditions. This connection is essential for maintaining the integrity of the electrical system and complying with the National Electrical Code (NEC) regulations.

The other options involve different components or methods that do not specifically address the connection of the grounded conductor to the service disconnecting means enclosure in the same way that a system bonding jumper does. For example, a grounding machine screw or sheet metal screw might be used for securing various components, but they do not serve the same functional purpose as a bonding jumper.