AUWiring

Solar and battery calculators

Check PV string voltage, DC and AC cable voltage drop, array capacity, inverter sizing, export limits and battery cable drop from project inputs.

  • 9 calculators
  • Australian workflow
  • 230/400 V a.c. context

Solar and battery calculators project basis

Check PV string voltage, DC and AC cable voltage drop, array capacity, inverter sizing, export limits and battery cable drop from project inputs. These calculators support Australian design, estimating, installation and verification preparation. Keep the circuit, equipment, route, supply arrangement and source data with the result before it is used in a project record.

More

Confirm the nominal 230/400 V a.c. or project-specific voltage basis, 50 Hz context where applicable, phase arrangement, metric units, manufacturer information, DNSP or authority conditions and current project documents before applying a result.

Check entered values, supply arrangement, cable or equipment data, product limits, DNSP or authority conditions and review limits before using the result.

Records covered

  • PV string voltageCheck string voltage using module data and temperature values. Inputs: Module voltage data, temperature coefficient, module count and temperature range. Output: String-voltage estimate requiring product listings and current rules.
  • Inverter AC cable voltage dropEstimate AC voltage drop between inverter and connection point. Inputs: Inverter current, phase arrangement, route length and conductor data. Output: Voltage-drop estimate with DNSP and inverter-manufacturer review.
  • Battery cable voltage dropEstimate DC voltage drop for battery cable runs. Inputs: DC current, route length, conductor material and voltage. Output: High-current DC estimate requiring equipment and safety review.
  • PV DC cable voltage dropEstimate PV DC cable voltage drop from entered string current and conductor data. Inputs: String current, parallel strings, DC voltage, route length, conductor resistance and temperature factor. Output: PV DC voltage-drop worksheet requiring cable, protection and product review.
  • PV string currentConvert module current data and parallel strings into PV string and array current records. Inputs: Module Imp, module Isc, parallel strings, current factor and entered current limit. Output: Current record for downstream PV DC cable and protection review.
  • Inverter sizing recordCompare PV array DC capacity with inverter AC capacity and entered ratio targets. Inputs: Array kW, inverter kW, ratio range and optional export-limit value. Output: DC/AC ratio worksheet that does not select equipment.

Review before applying

Solar and battery calculator results are preparation records. Keep entered values beside current Australian requirements, DNSP or authority conditions, manufacturer information and project documents before applying a result.

Recheck the selected calculator whenever the supply arrangement, equipment data, route length, tariff basis, measurement method or project document set changes.