Conduit Bending
Saddle bends, offsets, kicks, segment bends, rolling offsets, and conduit bend multipliers for field layout.
Electrical Calculators for Motors, Solar, Voltage Drop, and Loads
Find calculators for motors, conduit bends, wire sizing, voltage drop, lighting, solar, backup power, and test readings.
Calculator Categories
Browse calculation families by equipment, field task, and electrical method.
Electrical Formulas
Voltage, current, resistance, power, energy, power factor, and cost calculators for basic electrical math.
Estimating And Material Planning
Material takeoff, conduit cut length, wire pull length, waste allowance, and job quantity calculators.
Lighting And Illumination
Lumens, footcandles, lux, fixture count, lighting load, emergency lighting, and lighting energy calculators.
Load Calculations
Residential, commercial, industrial, feeder, panel, service, appliance, HVAC, and EV load calculators.
Motors And Power Quality
Motor current, starter sizing, VFD checks, transformer kVA, generator load, harmonics, and power quality.
Solar And Backup Power
Battery capacity, runtime, inverter size, UPS capacity, generator load, fuel use, and backup power planning.
Solar And PV Systems
PV array size, solar panel count, string voltage, cable voltage drop, charge controller checks, and solar energy output.
Testing, Protection And Grounding
Insulation resistance, short-circuit current, pull-box sizing, grounding, bonding, touch voltage, and protection checks.
Wire, Cable And Raceway
Wire size, cable resistance, raceway fill, ampacity, voltage drop, bend radius, and pull-length calculators.
Available Calculators
Open a calculator to enter values, inspect the formula, and read the result units.
Demand Factor Calculator
Apply an entered demand factor and fixed allowance to connected load for a parent load workflow; the adopted demand method remains external.
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Demand Charge Cost Calculator
Calculate monthly and selected-period demand charge cost from billing demand, demand rate, and billed months.
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DC Voltage Drop Calculator
Calculate round-trip DC voltage drop, drop percentage, entered limit voltage, and limit margin from entered circuit values.
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DC Power From Voltage And Current Calculator
Calculate steady-state DC watts from entered voltage and current at the same operating point.
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Daylight Factor Calculator
Calculate daylight factor ratio and percent from paired indoor and outdoor illuminance readings recorded on the same basis.
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Data Logger Interval Calculator
Calculate logger point count, maximum interval for required points, and raw storage from duration, interval, channels, and bytes per sample.
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Current Limiting Resistor Calculator
Calculate DC series resistance, resistor voltage, and resistor power for a target current using entered supply and load voltage.
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Current From Power And Voltage Calculator
Calculate current in amps from entered power and voltage; AC phase, power factor, inrush, and protection decisions remain separate.
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Control Relay Contact Load Calculator
Calculate relay contact VA, utilization, and remaining entered rating from contact voltage, contact current, and VA rating.
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Control Circuit Fuse Calculator
Calculate control load current, inrush reference current, and entered fuse-rating margins without selecting or approving a fuse.
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Control Cable Shield Calculator
Calculate control-cable shield loop resistance, voltage drop, and dissipation from entered length, resistance, and current.
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Contactor Coil VA Calculator
Calculate steady-state VA, inrush VA, inrush ratio, and inrush excess for an entered contactor coil.
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Conduit Trade Size Calculator
Compare entered conductor area with a candidate conduit inside diameter and explicit fill-limit assumption; no trade-size lookup is performed.
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Conduit Three-Bend Sequence Calculator
Calculate three-bend mark positions, travel by bend, total bend angle, and geometry shrink from entered angles.
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Conduit Stub Length Calculator
Calculate conduit stub tangent run, layout mark position, and stub allowance from height, bend angle, take-up, and end allowance.
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Conduit Shrink Calculator
Calculate per-set and total conduit shrink from offset depth, bend angle, and bend-set count.
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Conduit Saddle Shrink Calculator
Calculate saddle mark spacing and geometry shrink from obstruction height, outside bend angle, and saddle count.
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Conduit Parallel Run Calculator
Calculate total parallel conduit length, centerline spread, outside span, and entered per-run allowance for equal parallel runs.
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Conduit Offset Travel Calculator
Calculate offset travel, second bend mark, multiplier, and geometry shrink from entered rise and bend angle.
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Conduit Multibend Layout Calculator
Calculate grouped multibend total angle, arc length, average mark spacing, and last mark from bend rows and centerline radius.
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Conduit Bend Radius Calculator
Calculate centerline radius, developed arc length, radius-to-diameter ratio, and margin against an entered minimum radius.
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Conduit Bend Multiplier Calculator
Calculate offset bend multiplier, travel, shrink factor, and geometry shrink from entered bend angle and offset depth.
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Conduit Bend Angle Calculator
Calculate conduit bend angle, multiplier, second mark, and geometry shrink from entered rise, travel, and first mark.
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Conduit Back-to-Back Bend Calculator
Calculate back-to-back bend marks, bend travel, separation, combined rise, and geometry shrink from separate bend inputs.
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