ElecFlow — Electrician Toolbox

ElecFlow is the professional electrical toolkit built for the job site. Whether you're sizing wire, calculating voltage drop, filling out a panel schedule, or prepping for inspection — everything you need is one tap away, offline and instant. Trusted by journeymen, master electricians, and apprentices alike, ElecFlow replaces the clipboard, the dog-eared code book, and the back-of-envelope math with a fast, accurate toolbox designed for real field conditions. ELECTRICAL CALCULATORS • Ohm's Law — Solve for voltage, current, resistance, or power from any two known values • Voltage Drop — Single and three-phase drop calculations with NEC 3% pass/fail indicator • Wire Ampacity — NEC Table 310.12 sizing for copper and aluminum at 60°C, 75°C, and 90°C • Conduit Fill — Wire count and AWG to conduit size for EMT, PVC, and RMC • Residential Load Calculator — NEC Article 220 service load with demand factors • Box Fill — NEC 314.16 conductor, device, clamp, and ground volume calculations • Motor Circuit Sizing — NEC 430 FLA lookup, minimum wire gauge, breaker size, and overload setting • Transformer Sizing — Required kVA, standard size recommendation, and full-load amps • Power Factor Correction — kVAR required and capacitor sizing in µF • Short Circuit Current — Available fault current at transformer secondary and end of conductor run, with OCPD interrupt rating comparison • Battery & Inverter Sizing — Off-grid load list to Ah and inverter wattage • Conduit Bending — Stub-up, offset, three-point saddle, and back-to-back with live multipliers and shrinkage FIELD TOOLS • Panel Schedule — Fill in a 20 or 40-circuit breaker directory and export a professional panel card image to share or print • Inspection Checklist — NEC-based rough-in and trim-out checklists for residential and commercial jobs, with flag, note, and share features REFERENCE LIBRARY • NEC Quick Reference — 40+ searchable NEC articles across GFCI/AFCI, grounding, motors, services, and special locations • Wire Color Codes — US, Canadian, and IEC/EU standards at a glance • Resistor Color Code — 4-band and 5-band decoder • Electrical Symbols — Device, power, control, and lighting symbol guide • Torque Specifications — Terminal torque values from #14 AWG to 500 MCM UNIT CONVERTER Convert between kW and horsepower, kVA, power factor, amps, and motor efficiency — all in one place. BUILT FOR THE FIELD — Works completely offline. No account, no subscription, no ads — All NEC data hardcoded — no internet required on the job site — Dark mode designed for low-light environments — Large, readable result displays — glanceable at arm's length — Haptic feedback on every calculation ElecFlow is a reference and calculation aid. Always verify results against current NEC code, local amendments, and applicable standards. Not a substitute for a licensed electrician's judgment.