Solar Cable Sizing Calculator for PV DC Circuits
Use this GEESYS calculator to estimate a suitable solar cable cross-section for PV strings, combiner box feeders, and inverter-side DC runs. Enter the design current, system voltage, cable route length, allowable voltage drop, and conductor material to get a planning recommendation.
This tool is useful during preliminary sizing for rooftop and ground-mounted solar systems where cable heating and voltage drop both matter for performance and safety.
Estimated Result
Recommended Cable Size
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Estimated Voltage Drop
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Estimated Cable Ampacity Range
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Results will appear here after calculation. Final cable selection should be checked against installation method, ambient temperature, grouping factor, and applicable standards.
