When using a portable generator as a standby source, should the equipment grounding conductor be bonded to the system grounding electrode?

When utilizing a portable generator as a standby source for electrical power, it is essential for safety that the equipment grounding conductor be bonded to the system grounding electrode. This practice helps ensure that any potential fault currents can safely return to the ground, minimizing the risk of electric shock or equipment damage.

Bonding the grounding conductor to the grounding electrode system promotes proper grounding and allows protective devices, like circuit breakers or fuses, to operate correctly during a fault condition, thereby enhancing the overall safety and reliability of the system. Without this bond, there may be a risk of multiple grounding paths which can lead to dangerous voltage potentials on equipment, posing a hazard to personnel and property.

This requirement applies broadly to all setups involving portable generators, reinforcing the importance of adhering to local code requirements and the National Electrical Code (NEC) guidelines for effective electrical safety.