--- title: "Volt Drop Check & Plug - Reviews, Revenue and Downloads in South Africa | Apple App Store" description: "Volt Drop Check & Plug is an iPhone-only electrical calculation toolkit for field electricians, maintenance technicians, and design engineers. Stop juggling paper tables, calculators, and spreadsheets" --- # Volt Drop Check & Plug — South Africa > Voltage Drop & NEMA/IEC Guide ![Volt Drop Check & Plug App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/7c/7c/7a/7c7c7ae2-04f2-480f-e8a9-663b792770ba/AppIcon-0-0-1x_U007ephone-0-1-85-220.png/434x0w.png) **Developer:** [MASAHIRO HIRAIWA](https://apptail.io/developer/masahiro-hiraiwa-SuUuy) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** 9.99 R **Bundle ID:** jp.co.yahoo.powerchecker **Store:** Apple App Store **Country:** South Africa **Version:** 1.2.0 (released 2026-04-25) **Original Release:** 2025-09-12 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/za/app/app/id6752117109) **AppTail Page:** [https://apptail.io/app/volt-drop-check-plug-Rkjx/south-africa](https://apptail.io/app/volt-drop-check-plug-Rkjx/south-africa) ## Volt Drop Check & Plug Description Volt Drop Check & Plug is an iPhone-only electrical calculation toolkit for field electricians, maintenance technicians, and design engineers. Stop juggling paper tables, calculators, and spreadsheets — switch between tabs and get the answer you need in seconds. ■ What's inside 1) Voltage Drop Calculator • Inputs: supply voltage, load current (or power in W), cable length, conductor material (copper / aluminum), insulation (PVC 70°C, XLPE 90°C, heat-resistant PVC 105°C), circuit type (DC / 1-phase 2-wire, 3-phase 3-wire), power factor, and optional reactance. • Outputs: ΔV, drop %, terminal voltage, loop resistance, and assumed conductor temperature. • GOOD / CAUTION / NG verdict badge with a one-line explanation, improvement suggestions, risk notes, and basis notes. • Round-trip ×2 applied automatically for DC / single-phase; √3 factor applied for three-phase. 2) Cable Size Selection (reverse calculation) • From load current, voltage, cable length, allowable drop %, material, circuit type, power factor, and ambient temperature, get the minimum required conductor area and a recommended cable size. • Side-by-side comparison of common sizes with PASS / FAIL / BEST indicators. 3) Ampacity Calculator • From conductor material, size, installation method (free air / in conduit / bundled), insulation type, ambient temperature, and grouping count, see base ampacity with temperature and grouping correction factors. • Corrected ampacity plus a per-installation-method summary. 4) Breaker Selection Guide • From circuit current, circuit voltage, usage (general load / motor / lighting / IT·server), and phase (single / three), get a recommended rating (AT), frame size (AF), and type (MCCB / MCB / ELCB). • Earth-leakage (ELCB) recommendation is highlighted automatically where appropriate. Includes a type guide. 5) Power Calculator (W ↔ VA ↔ kVA ↔ var) • Convert between active power (W / kW), apparent power (VA / kVA), reactive power (var / kvar), and phase angle φ from voltage, current, and power factor. • Three input modes: V×A, W, or VA. Single-phase / three-phase switchable. 6) NEMA / IEC Plug Quick Reference • A searchable cheat sheet for plugs and connectors — useful for overseas sites and imported equipment. Filter by code, voltage, and more. ■ Designed for the field • One-tap Japanese / English UI toggle (selection is remembered). • All calculations run on-device — works reliably even with poor signal. • Clear separation of inputs and results, with verdict badges and plain-language notes. • iPhone-first layout tuned for one-handed use. ■ Great for • Field electricians and contractors • Facility and maintenance technicians • Plant and building-services engineers • Solar, energy-storage, and EV-charging designers • Teams working with imported or overseas equipment • Electrical students and trainees ■ Important Results are reference values based on generic targets (e.g., 3% voltage-drop goal, 5% maximum). Always follow your local codes, internal standards, and equipment specifications for actual design and installation. ## Volt Drop Check & Plug Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6c/4d/20/6c4d20c7-2d1e-1a14-9b2a-1cac8ffdd0e4/IMG_4180.PNG/1290x2796.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/79/c0/a4/79c0a42a-0f52-4bb2-7656-4b1f3d7d9a9f/IMG_4181.PNG/1290x2796.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bd/70/ca/bd70ca99-8d9f-a53a-a1e0-4c1449a1aa53/IMG_4182.PNG/1290x2796.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2e/e6/e6/2ee6e633-de19-fb30-d5be-a3c4ce8ce94c/IMG_4183.PNG/1290x2796.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0a/df/33/0adf33ce-7cbe-d9c1-fc43-6ba9ab55dee9/IMG_4184.PNG/1290x2796.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/23/9c/81/239c8126-5f93-d57f-1920-b81f564ac7cf/IMG_4185.PNG/1290x2796.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/15/a3/2f/15a32f96-f665-0cf1-6c34-be58f96030e9/IMG_4186.PNG/1290x2796.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b7/dc/e8/b7dce8f3-6d3b-91cf-5f6a-70ba1f2b5c13/IMG_4187.PNG/1290x2796.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/52/11/ce/5211ce1e-869d-f0ab-0e8d-f9ef3bcb416f/IMG_4188.PNG/1290x2796.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/96/37/23/96372307-14a3-871f-12b7-80e024f0e051/IMG_4189.PNG/1290x2796.png) ## Volt Drop Check & Plug Available In - [United Arab Emirates](https://apptail.io/app/volt-drop-check-plug-Rkjx/united-arab-emirates) - [Angola](https://apptail.io/app/volt-drop-check-plug-Rkjx/angola) - [Argentina](https://apptail.io/app/volt-drop-check-plug-Rkjx/argentina) - [Australia](https://apptail.io/app/volt-drop-check-plug-Rkjx/australia) - [Bahrain](https://apptail.io/app/volt-drop-check-plug-Rkjx/bahrain) - [Bermuda](https://apptail.io/app/volt-drop-check-plug-Rkjx/bermuda) - [Belarus](https://apptail.io/app/volt-drop-check-plug-Rkjx/belarus) - [Indonesia](https://apptail.io/app/volt-drop-check-plug-Rkjx/indonesia) - [Sri Lanka](https://apptail.io/app/volt-drop-check-plug-Rkjx/sri-lanka) - [North Macedonia](https://apptail.io/app/volt-drop-check-plug-Rkjx/north-macedonia) - [Netherlands](https://apptail.io/app/volt-drop-check-plug-Rkjx/netherlands) - [Nepal](https://apptail.io/app/volt-drop-check-plug-Rkjx/nepal) - [Portugal](https://apptail.io/app/volt-drop-check-plug-Rkjx/portugal) - [Qatar](https://apptail.io/app/volt-drop-check-plug-Rkjx/qatar) - [Singapore](https://apptail.io/app/volt-drop-check-plug-Rkjx/singapore) - [Senegal](https://apptail.io/app/volt-drop-check-plug-Rkjx/senegal) - [United States](https://apptail.io/app/volt-drop-check-plug-Rkjx/united-states) - [South Africa](https://apptail.io/app/volt-drop-check-plug-Rkjx/south-africa) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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