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Calculadora de Queda de Tensão — Ferramenta online grátis

Perda de tensão ao longo do cabo

Calcule queda de tensão em um trecho de cabo. Cobre ou alumínio, monofásico ou trifásico. Essencial para conformidade.

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.

Pontos-chave

  • Voltage Drop Calculadora is a free, browser-based calculator tool — voltage loss over wire length.
  • Não signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Voltage Drop Calculadora

  1. Open the tool: Launch Voltage Drop Calculadora on Ferramentaolis — 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 Calculadora — Quick Facts

Preço
Grátis — sem limites, sem marca d’água, sem paywall
Privacidade
100% no navegador — nenhum dado é enviado a servidores
Plataforma
Qualquer navegador moderno — desktop, tablet ou celular
Categoria
Calculadora Ferramentas on Ferramentaolis
Offline
Works offline after first visit (Progressive Web App)
RecursoDetalhes
FerramentaVoltage Drop Calculadora
CategoriaCalculadora
Cadastro necessárioNão
Upload de arquivoNenhum — processado no navegador
Suporte mobileTotalmente responsivo
CustoGrátis para sempre

Why Use Voltage Drop Calculadora?

You should try Voltage Drop Calculadora for a quick, private way to voltage loss over wire length. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

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% Privacidade. Esta ferramenta funciona inteiramente no seu navegador. Seus dados nunca são enviados a nenhum servidor.