For Canadian electricians
Electrical tools
Quick calculations and references for residential, commercial and industrial work across Canada.
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Electrical work
Electrical calculationsSolve electrical quantities and check circuit performance with field-focused calculations.Conductors & racewayCheck conductor, grounding, raceway and cable-handling tasks with explicit inputs.Loads & servicesPlan loads, feeders, power-factor quantities and connected energy systems.Equipment & systemsWork with motors, batteries, lighting, PV, thermal and measurement systems.
Field tools
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- Voltage drop calculatorEstimate physical voltage drop or maximum one-way distance from supplied impedance.
- Electrical calculatorSolve DC relationships, convert AC power/current, or compare power-factor current ratios.
- Connected load calculatorTotal electrical input loads sharing one voltage, phase arrangement and power factor.
- EV charge time calculatorEstimate an AC charging window from usable capacity, power limits and efficiency.
- Battery runtime calculatorEstimate constant-load runtime from available energy at an explicit AC or DC boundary.
- Battery energy calculatorConvert nominal pack voltage and rated amp-hours to Wh and kWh, without estimating usable energy.
- Energy duration calculatorConvert constant-power energy, power and operating time.
- Resistance temperature calculatorAdjust supplied resistance between two temperatures using an explicit coefficient.
- Conductor area equivalence calculatorCompare copper and aluminium areas for equal calculated resistance.
- Resistor colour code calculatorDecode source-listed three-band and four-band carbon composition resistor markings.
- Transformer current calculatorCalculate nominal transformer line currents or kVA from known rated data.
- Conduit bend calculatorCalculate offset, fifteen-shot segment or listed three-bend saddle layouts.
- PVC expansion calculatorEstimate Scepter conduit movement and a known expansion fitting's piston setting.
- Lighting layout calculatorLay out a rectangular room or convert incident surface lumens and average illuminance.
- PV string voltage calculatorCalculate known-string Voc at supplied temperatures and compare it with a supplied upper limit.
- Motor current calculatorConvert mechanical hp and kW, or estimate full-load current from matching motor data.
- Induction motor speed calculatorCalculate synchronous speed, rotor speed, slip or speed regulation from supplied motor data.
- Duct heater calculatorRelate sensible heat, airflow and air-temperature rise with an explicit fixed-factor method.
- Cable reel calculatorEstimate round-cable capacity and loaded mass with separate volume, payload and drum comparisons.
- Cable tray area calculatorCompare circular cable areas with a supplied usable rectangular section.
- Conduit area ratio calculatorCompare supplied round-cable areas with a supplied clear circular bore.
- Three-phase neutral current calculatorSum phase-current vectors with individual displacement PF and compare their magnitude spread.
- Three-phase voltage unbalance calculatorChoose line-magnitude deviation or fundamental sequence ratio.
- Enclosure thermal calculatorEstimate passive temperature rise from enclosure dimensions, installation arrangement, internal heat and an explicit coefficient.
- Power factor correction calculatorCalculate reactive-power correction from supplied real power and lagging power factors.
- Ground electrode test plan calculatorLay out source-table fall-of-potential stake distances and one-metre probe verification positions.
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