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Spannungsabfall-Rechner — Kostenloses Online-Tool

Spannungsverlust über Kabellänge

Berechne Spannungsabfall über eine Kabelstrecke. Kupfer oder Aluminium, einphasig oder dreiphasig. Wichtig für Neinrmen. Ohne Anmeldung.

Voltage drop
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Voltage drop calculator

Calculate voltage loss across a wire run. Meet NEC 3% recommendation.

How to use this tool

  1. 1

    Enter current (amps)

    Load current the circuit carries.

  2. 2

    Enter wire length

    One-way distance from source to load.

  3. 3

    Pick AWG + material

    See voltage drop + percentage.

Frequently Asked Questions

What is acceptable voltage drop?
NEC recommends max 3% for branch circuits, 2% for feeders. Combined total should not exceed 5%.
Single vs three phase formula
Single phase: Vdrop = 2 × I × R × L. Three phase: Vdrop = √3 × I × R × L. Three-phase has lower drop for same load.

Wichtigste Punkte

  • Voltage Drop Rechner is a free, browser-based calculator tool — voltage loss over wire length.
  • Nein signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Voltage Drop Rechner

  1. Open the tool: Launch Voltage Drop Rechner on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Voltage Drop Rechner — Quick Facts

Preis
Kostenlos — keine Limits, kein Wasserzeichen, keine Paywall
Privatsphäre
Wird im Browser verarbeitet. Tools, die einen externen Dienst brauchen, sagen das auf der Seite. Seitenaufrufe werden gezählt (Google Analytics).
Plattform
Jeder moderne Browser — Desktop, Tablet, Mobil
Kategorie
Rechner Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
MerkmalDetails
ToolVoltage Drop Rechner
KategorieRechner
Anmeldung nötigNein
Datei-UploadKeine — wird im Browser verarbeitet
Mobile-UnterstützungVoll responsive
KostenFür immer kostenlos

Why Use Voltage Drop Rechner?

You should try Voltage Drop Rechner for a quick, private way to voltage loss over wire length. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privatsphäre. Dieses Tool läuft komplett in deinem Browser. Deine Daten werden niemals auf einen Server hochgeladen.