Hello,

I understand based on the local jurisdiction, the location of PV rapid shutdown device could be on the interior of the building or on the exterior. I would appreciate some comments on following scenario:

We're planning to install a 8 kW grid-tied PV system on a roof top of two-storey multi-unit residential building. The electrical utility meter and distribution equipment are installed inside the building in the main electrical room. We would install a PV system shutdown device on the rooftop which would activate upon loss of utility AC power and as I understand by code, another PV system shutdown device grouped with the one on the rooftop is required before the DC/AC inverter.

My query is that knowing all electrical equipment is installed inside the building, would the PV system shutdown device installed before the inverter be located inside the building or outside the building as per standard industry practice. In the end the local authority would dictate the terms, but I wanted to understand the industry practice for such scenario.

Thank you.