Where should the rapid shutdown initiation device be located for one-family and two-family dwellings?

The rapid shutdown initiation device for one-family and two-family dwellings must be located at a readily accessible location outside the building to ensure quick access in case of an emergency. This is crucial for safety, as emergency responders need to have the ability to quickly and easily shut down the solar photovoltaic (PV) system to prevent hazards such as electrical shock or fire.

Having it outside the building allows for visibility and accessibility without needing to enter the dwelling, facilitating a faster response in critical situations. This requirement aligns with safety standards outlined in the National Electrical Code, ensuring that systems are designed with safety as a top priority.

The other locations mentioned, such as in an interior room or behind the main electrical panel, would hinder swift access during emergencies, potentially putting both first responders and occupants at risk. A basement location is similarly unsuitable since it is often less accessible and could delay the response when seconds matter. Thus, positioning the device outside the building fulfills the NEC’s emphasis on ensuring rapid accessibility for emergency situations.