AS/NZS 5033

String Sizing Calculator

Calculate min/max panels per string based on inverter MPPT window and temperature derating.

For reference only — always verify panel and inverter datasheets and comply with AS/NZS 5033 and local installation standards. Cell temperature differs from ambient; adjust accordingly.

Solar Panel Specifications

Panel Preset

Panel Electrical Data (STC)

Voc (V)

Vmp (V)

Isc (A)

Imp (A)

Temp Coeff Voc (%/°C)

Negative value, e.g. -0.28

Panel Wattage (W)

Inverter Specifications

Min MPPT Voltage (V)

Max MPPT Voltage (V)

Max DC Input Voltage (V)

Max Input Current (A)

Site Conditions

Min Cell Temp (°C)

Coldest expected cell temp (winter dawn)

Max Cell Temp (°C)

Hottest expected cell temp (summer peak)

Tip: Cell temperature is typically 20–35°C above ambient. For an ambient range of -5°C to 40°C, use cell temps of approximately -5°C to 75°C. AS/NZS 5033 provides regional temperature data.