Is it ever Code-compliant to install a feeder to a separate building without an equipment grounding conductor for new installations?

The installation of feeders to separate buildings without an equipment grounding conductor is not code-compliant for new installations under the National Electrical Code (NEC). The NEC sets forth stringent guidelines to ensure electrical safety, particularly regarding grounding.

For new installations, a feeder that supplies power to a separate building must include an equipment grounding conductor to provide a safe and effective path for fault current. This requirement is essential for preventing shock hazards and ensuring that overcurrent protection devices function correctly in the event of a fault.

While there may be some exceptions in specific situations for existing systems or depending on historical installations prior to certain code changes, for new installations, the NEC mandates that an equipment grounding conductor be included. This is essential in promoting safety in electrical installations and protecting both property and individuals from the dangers of electrical faults.