String sizing
String sizing is the process of choosing how many PV modules are wired in series so voltage and current stay within inverter and code limits across expected temperatures.
Product(s)
No items found.
Need assistance? Get in touch
What does String sizing mean?
String sizing is the process of choosing how many PV modules are wired in series so voltage and current stay within inverter and code limits across expected temperatures.
What should designers verify about String sizing before selecting PV equipment?
In PV design, this term helps define the electrical operating envelope of modules, strings, conductors, inverters, MLPE, and protection devices. The value may look simple on a datasheet, but the design impact depends on temperature, irradiance, configuration, and the ratings of every connected component.
Practical design considerations
- Check the term against the current datasheet and installation manual, not only a product overview.
- Consider temperature, irradiance, string length, and equipment input limits before applying the value.
- Use the same units and test conditions when comparing products or calculations.
Related Tigo Support: For design, installation, commissioning, or troubleshooting details, see TS4 PV Module Compatibility.