Tools
Calculators and references for Canadian electrical work.
- Voltage drop calculatorEstimate physical voltage drop or maximum one-way distance from supplied impedance.Calculation · Single-phase and three-phase
- Electrical calculatorSolve DC relationships, convert AC power/current, or compare power-factor current ratios.Calculation · DC and balanced AC
- Connected load calculatorTotal electrical input loads sharing one voltage, phase arrangement and power factor.Calculation · Connected load, not code demand
- EV charge time calculatorEstimate an AC charging window from usable capacity, power limits and efficiency.Calculation · Constant-power AC charging
- Battery runtime calculatorEstimate constant-load runtime from available energy at an explicit AC or DC boundary.Calculation · Energy-based runtime
- Battery energy calculatorConvert nominal pack voltage and rated amp-hours to Wh and kWh, without estimating usable energy.Calculation · Nominal energy only
- Energy duration calculatorConvert constant-power energy, power and operating time.Calculation · kWh, kW and hours
- Resistance temperature calculatorAdjust supplied resistance between two temperatures using an explicit coefficient.Calculation · Linear resistance correction
- Conductor area equivalence calculatorCompare copper and aluminium areas for equal calculated resistance.Calculation · Equal length, 20°C resistivity
- Resistor colour code calculatorDecode source-listed three-band and four-band carbon composition resistor markings.Reference · Nominal value and tolerance
- Transformer current calculatorCalculate nominal transformer line currents or kVA from known rated data.Calculation · Single-phase and three-phase
- Conduit bend calculatorCalculate offset, fifteen-shot segment or listed three-bend saddle layouts.Calculation · Bend chart methods
- PVC expansion calculatorEstimate Scepter conduit movement and a known expansion fitting's piston setting.Calculation · IPEX Scepter method
- Lighting layout calculatorLay out a rectangular room or convert incident surface lumens and average illuminance.Calculation · Room layout and surface flux
- PV string voltage calculatorCalculate known-string Voc at supplied temperatures and compare it with a supplied upper limit.Calculation · Open-circuit voltage
- Motor current calculatorConvert mechanical hp and kW, or estimate full-load current from matching motor data.Calculation · Shaft conversion or full-load point
- Induction motor speed calculatorCalculate synchronous speed, rotor speed, slip or speed regulation from supplied motor data.Calculation · Frequency, poles and speed
- Duct heater calculatorRelate sensible heat, airflow and air-temperature rise with an explicit fixed-factor method.Calculation · Thermal balance
- Cable reel calculatorEstimate round-cable capacity and loaded mass with separate volume, payload and drum comparisons.Calculation · Cable reel logistics
- Cable tray area calculatorCompare circular cable areas with a supplied usable rectangular section.Calculation · Geometric ratio only, not allowable fill
- Conduit area ratio calculatorCompare supplied round-cable areas with a supplied clear circular bore.Calculation · Geometric ratio only, not allowable fill
- Three-phase neutral current calculatorSum phase-current vectors with individual displacement PF and compare their magnitude spread.Calculation · Sinusoidal four-wire wye
- Three-phase voltage unbalance calculatorChoose line-magnitude deviation or fundamental sequence ratio.Calculation · Explicit measurement metric, no threshold
- Enclosure thermal calculatorEstimate passive temperature rise from enclosure dimensions, installation arrangement, internal heat and an explicit coefficient.Calculation · Passive enclosure heat balance
- Power factor correction calculatorCalculate reactive-power correction from supplied real power and lagging power factors.Calculation · kVAr arithmetic, not capacitor selection
- Ground electrode test plan calculatorLay out source-table fall-of-potential stake distances and one-metre probe verification positions.Planning · Measurement layout, not resistance or compliance