Voltage Drop Checker & Plug Reference

Power Checker — Voltage Drop Checker & Plug Reference

Power Checker — Voltage Drop Checker & Plug Reference

Make field decisions faster and more reliably. From conductor conditions, run length, and load, the app calculates ΔV, drop rate, terminal voltage, and recommended cross-sectional area in real time. NEMA/IEC plugs can be cross-checked instantly with search and card-style lists.

Voltage Drop / Plug Reference / Common/UI / Notes / Credits/Licenses

Voltage Drop (Calculate)

Input Fields

  • Conductor cross-section (mm²), material (Cu / Al), insulation type (PVC70 / XLPE90 / PVC105)
  • Ambient temperature (°C), run length (m), supply voltage (V)
  • Load current (A) or load power (W)
  • Circuit type (DC / Single-phase 2-wire or Three-phase 3-wire)
  • Power factor (PF), whether to use reactance and X (Ω/km)
  • Allowable voltage drop (%) and optional conductor temperature (°C)

Real-time Outputs

  • Voltage drop ΔV, drop rate %, terminal voltage, and (for DC) loop resistance
  • Adopted conductor temperature and recommended cross-sectional area (mm²)
  • Rating badges: GOOD / CAUTION / NG with a one-line explanation, likely causes, improvement suggestions, and risk notes
  • Notes about rules of thumb and calculation conditions

Behavior

  • Inputs are debounced and calculated automatically
  • Clear warnings for large drop, temperature overrun, insufficient terminal voltage, etc.

Example: Cu / PVC70 / 10 m / 200 V / 10 A → ΔV ≈ 1.024 V, drop ≈ 0.51%, terminal voltage ≈ 198.98 V (reference only)

Plug Quick Reference (Plugs)

  • Representative models for NEMA (5/6, L5/L6) and IEC (C5/6/7/8/13/14/15/16/19/20/21/22) shown as cards
  • Local images displayed in parallel (P = plug, R = receptacle) to quickly confirm model, voltage, current, and connection class
  • Search bar to scan across models and specifications
  • Quick tables for NEMA/IEC, an abbreviation guide, and credits/license information

Quick Examples (text)

  • NEMA 5-15P/R — 125V 15A
  • NEMA L5-15P/R — 125V 15A
  • NEMA 6-20P/R — 250V 20A
  • IEC C13/C14 — 250V 10A (15A in some regions)
  • IEC C15/C16 — 120/250V 10A
  • IEC C19/C20 — 250V 16A

For the full list, see the “Plugs” tab in the app.

Common / UI

  • Language switch in the header (JA/EN)
  • Clear, mobile- and web-friendly UI using Expo Router + React Native Web
  • Error handling and fallbacks implemented (e.g., image load failures)

Notes

  • This app is a design aid. Final decisions must follow laws/regulations and standards (IEC/NEMA/JIS, etc.) and your internal policies.
  • Actual values vary with wiring method, environment, temperature rise, cable bundling, and reactance settings.

Credits / Licenses

Images use locally bundled photos/diagrams (e.g., /assets/images/). When using external materials, follow each provider’s license terms.

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