3-Phase Distro Balance Calculator
Balance a lighting rig across three phases: enter total load and see per-phase current and the imbalance to even out.
An 18 kW rig should pull ~26 A on each of three phases when balanced. Pile too much on one phase and that leg's breaker trips while the others idle — and an unbalanced neutral can overheat. Spread fixtures across phases as you patch so the distro sits near the even figure.
Rule / Formula
Note: Planning aid only — phase distribution and neutral loading must be verified by a qualified electrician.
Balance a lighting rig across three phases: enter total load and see per-phase current and the imbalance to even out.
About 3-Phase Distro Balance Calculator
Balance a lighting rig across three phases: enter total load and see per-phase current and the imbalance to even out. An 18 kW rig should pull ~26 A on each of three phases when balanced. Pile too much on one phase and that leg's breaker trips while the others idle — and an unbalanced neutral can overheat. Spread fixtures across phases as you patch so the distro sits near the even figure.
How to use 3-Phase Distro Balance Calculator
- 1Enter your values into the fields in 3-Phase Distro Balance Calculator.
- 2The result and any pass/fail verdict update instantly as you type — no button to press.
- 3Check the substituted formula and worked example to see exactly how the result was derived.
- 4Copy or note the result for your spec, delivery or planning.
Why use 3-Phase Distro Balance Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: Three-phase power distribution; touring electrics practice.
- ✓Shows the governing formula and a worked example, so you can trust and check every result.
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does 3-Phase Distro Balance Calculator do?+
Balance a lighting rig across three phases: enter total load and see per-phase current and the imbalance to even out. An 18 kW rig should pull ~26 A on each of three phases when balanced.
Is my data private?+
Yes. 3-Phase Distro Balance Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is 3-Phase Distro Balance Calculator based on?+
It follows Three-phase power distribution; touring electrics practice. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
3-Phase Distro Balance Calculator uses: balanced per-phase current = total W ÷ 3 ÷ phase voltage; worst phase = total × share ÷ voltage. The tool shows this formula with your own numbers substituted so you can verify the result.
Is 3-Phase Distro Balance Calculator free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
Embed 3-Phase Distro Balance Calculator on your website
Want 3-Phase Distro Balance Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/three-phase-distro-balance-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="3-Phase Distro Balance Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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