Tools

Power Calculator.

Real DNO call checks for kVA, kW, and amps with PF, phase, voltage presets, and headroom.

Reminder: DNO capacity is often stated in kVA, not kW.

Mode + supply assumptions

Mode

Phase

Voltage

Using phase-to-neutral voltage for single-phase calculations.

Supply type (drives fuse list)

Known value (one active input)

Known kVA Known kW Known amps

Power factor (PF) 0.98

PF affects kW ↔ kVA conversion. kVA itself is unchanged by PF.

Advanced assumptions

Show all sizes (advanced)

LV service cable preset (optional)

Show LV headroom anyway (advanced)

Jump to Results

Results

kVA—

kW—

A—

PF0.98

Phase1φ

Voltage230 V

LV warning ≥250 kVA LV ceiling ≥276 kVA LV view

Fuse / breaker size

Fuse presets adapt to your supply assumptions.

Apply 80% design rule to effective limit

Suggested fuse (next standard size): —

UtilisationGreen

—

Effective limit: —

Remaining amps—

Remaining kVA—

Enable this panel to compare proposed load against approved DNO kVA capacity.

Methodology: values are first-principles electrical conversions using entered PF, voltage, and phase assumptions.