What must a generator’s grounding system meet when there is no overcurrent protection?

When a generator's grounding system lacks overcurrent protection, it is essential that the system complies with NEC (National Electrical Code) guidelines for bonding jumpers. This requirement ensures that the grounding system effectively minimizes the risk of electrical faults and provides a safe path for ground fault current.

The NEC outlines specific standards for grounding and bonding that help ensure safety and reliability in electrical systems. Following these guidelines is crucial, particularly in scenarios where additional protective measures like overcurrent devices are not available. By adhering to NEC guidelines for bonding jumpers, the grounding system is designed to maintain a low impedance path to ground, which is vital for the safe operation of the generator and the overall electrical system it supports.

In contrast, while specific voltage levels, manufacturer’s instructions, and local state regulations may also play a role in grounding practices, they do not specifically address the critical aspects related to grounding systems without overcurrent protection like the NEC guidelines do. The bond provided by bonding jumpers is integral to reducing the risks of electrical shock and equipment damage in such cases.