Solar Wire Calculator
Size solar wire right — the pocket reference for PV installers and electricians. NEC 2023 compliant.
Coming Soon on the App StoreFeatures
Solar DC Sizing with NEC 690.8
Enter module Isc and the app automatically applies the 1.56x correction factor per NEC 690.8(A) and (B). No manual math.
Four Modes in One App
Solar DC, Residential AC, Marine/RV, and Industrial — all NEC 2023 compliant. Three-phase industrial uses the correct sqrt(3) factor.
Advanced Derating
Ambient temperature correction (NEC 310.15(B)), conduit fill adjustment (NEC 310.15(C)(1)), and equipment grounding per NEC 250.122.
100% Offline
Works on rooftops and job sites with no signal. All calculations run locally on your device — no internet required.