Definition
String current is the current flowing through a series-connected PV string. In series wiring, current is constant across all modules, equal to the module-level current (Imp at MPP, Isc at short circuit).
Key Takeaways
- String current = module-level current.
- Imp at MPP, Isc at short circuit.
- Per-MPPT current = parallel strings × Imp.
- Wire sized to 1.25 × Isc × 1.25.
Frequently Asked Questions
1 commonly searched questions about String Current.
What's string current?
Current through a series-wired PV string. Equal to module Isc (at short) or Imp (at MPP), regardless of string length.
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