Charts

Formula, relationship and measurement charts that explain calculator methods without replacing calculator input pages.

7 charts
6 collections
Australia

Formula charts by workflow

Open the workflow area that matches the calculation relationship.

Cable and voltage1 chartsCable and voltage chartsFormula and relationship charts for voltage drop, route length and cable-run calculations.
Power and load1 chartsPower and load chartsPower-factor, kW, kVA, kVAr and load relationship charts.
Protection and testing1 chartsProtection and testing chartsFault-current and protection relationship charts for Australian worksheet review.
Motors and transformers1 chartsMotor and transformer chartsTransformer current and motor-related formula charts.
Solar, battery and EV1 chartsSolar, battery and EV chartsPV string, inverter and battery formula charts.
Power quality and backup2 chartsPower quality and backup chartsVoltage unbalance, harmonic distortion and generator relationship charts.

All formula charts

Use these charts to review formulas before opening the calculator that owns the project-specific values.

Cable and voltageType: Formula chart · Sensitivity: Low · Reviewed: 2026-07-13Voltage-drop formulasFormula chart for AC voltage drop, voltage-drop percent, receiving-end voltage and route-length relationships.
Power and loadType: Relationship chart · Sensitivity: Low · Reviewed: 2026-07-13Power-factor relationshipRelationship chart for kW, kVA, kVAr, power factor and power-factor-correction estimates.
Protection and testingType: Relationship chart · Sensitivity: Medium · Reviewed: 2026-07-13Fault-current relationshipRelationship chart for voltage, source impedance, transformer impedance and prospective fault current.
Motors and transformersType: Formula chart · Sensitivity: Low · Reviewed: 2026-07-13Transformer current formulasFormula chart for transformer kVA, primary current and secondary current relationships.
Solar, battery and EVType: Formula chart · Sensitivity: High · Reviewed: 2026-07-13PV string voltage formulasFormula chart for PV string voltage, temperature adjustment and module-count relationships.
Power quality and backupType: Measurement chart · Sensitivity: Low · Reviewed: 2026-07-13Voltage unbalance formulasMeasurement formula chart for average voltage, maximum deviation and percent voltage unbalance.
Power quality and backupType: Measurement chart · Sensitivity: Low · Reviewed: 2026-07-13Harmonic THD formulasFormula chart for total harmonic distortion from fundamental and harmonic RMS magnitudes.

AUAUWiring

Calculation tools, structured tables, charts and guides for Australian electrical work using local terms, metric conductor sizes and 230/400 V, 50 Hz context.

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