## RA4.6 Solar Electric Systems

### RA4.6.1 Photovoltaic Systems

When photovoltaic (PV) system performance is used in the performance compliance approach as specified in the Residential ACM Reference Manual, the PV system shall meet the eligibility criteria in (a) or (b).

(a) PV systems meeting all requirements of the NSHP Guidebook; or,

(b) PV systems meeting all of the following requirements:

1. The PV modules and inverter(s) meet the equipment eligibility requirements in the NSHP Guidebook.

2. The PV system nameplate DC power rating, measured under Standard Test Conditions, is no less than 2000 watts.

3. The PV array is installed at a slope no greater than 2.4 degrees from the horizontal (ratio of rise to run no greater than 0.5:12); or, the PV array is installed at a slope no greater than 30.3 degrees from the horizontal (ratio of rise to run no greater than 7:12) and with an orientation between 110 degrees and 270 degrees of true north.

4. The PV system is equipped with a system energy production meter that is integral to the inverter, a standalone system energy production meter, or an energy production monitoring system.

5. Any obstruction that projects above a PV array shall be located at least twice the distance, measured in the horizontal plane, of the height difference between the highest point of the obstruction and the horizontal projection of the nearest point of the PV array, measured in the vertical plane.

6. Prior to occupancy of the building, the building inspector shall confirm that PV system is operational.