Tools
Each tool works on its own and can send its result into the Workbench model. Every result shows the formula summary, assumptions, warnings and a link to its Methods page.
Cables & Raceways
Sizing, voltage drop, fill and conductor data.- Cable Check →
Current, size adequacy for the size you specify, and running / starting voltage drop.
- Conduit Fill →
Fill percentage from the conduit and conductor dimensions you enter.
- Tray Fill →
Cable tray occupancy from tray width and cable diameters.
Loads & Power Quality
Current, power triangle, power factor and loading.- Full-Load Current →
Amperes from kW, HP or kVA with voltage, phase, power factor and efficiency.
- kVA Triangle →
Solve kW, kVA, kVAR and power factor from any two values.
- Motor Starting Voltage Dip →
Bus dip and motor terminal voltage when a motor starts on a utility transformer, with the feeder and existing load.
- Power Factor Correction →
kVAR required to move from the present to a target power factor.
Short Circuit & Protection
Fault current, protective devices and relaying.- Short-Circuit Duty: ANSI vs IEC →
Fault current by ANSI/IEEE C37 and by IEC 60909 at one bus, each checked against its own breaker ratings.
- Transformer Secondary Short-Circuit →
Secondary fault current on an infinite bus or with a finite source impedance.
Power Sources & Backup
Generators, UPS, batteries and solar.- Emergency Generator Sizing →
Running kW, largest motor starting kVA, transient voltage dip and step loading.
- Solar PV Area & Output →
Area for a target kW, or kW and annual energy for an area; fixed tilt or tracking; row spacing.
- Stationary Battery Sizing →
IEEE 485 period method: duty cycle sections, capacity rating factors, temperature, aging and margin for switchgear, UPS and control batteries.
Grounding, Lightning & Corrosion
Electrodes, step and touch voltage, lightning risk, cathodic protection.- Cathodic Protection Groundbed →
Current requirement, anode count and life, and groundbed resistance for deep-well, vertical and horizontal beds.
- Ground Grid Step & Touch Voltage →
Tolerable and calculated step and touch voltages for a substation grid (IEEE 80 method).
- Ground Rod and Wire Resistance →
Rods, a buried horizontal ground wire, or both together (Dwight formulas).
- Lightning Risk Assessment →
Collection area, expected strike frequency and tolerable frequency (NFPA 780 / IEC 62305-2 methods).
Electrical Rooms & Lighting
Heat dissipation, cooling and illumination.- Electrical Room Heat Load →
Heat from panels by type, rating and quantity, and the cooling it takes to remove it.
- Illuminance (Lumen Method) →
Average illuminance or luminaire count for a room.
Testing & Maintenance
Checklists and field test corrections.- IR Temperature Correction →
Correct a measured insulation resistance to a reference temperature.
- Maintenance Checklist →
Printable checklists for six equipment types with instrument classes and document pointers. No pass/fail values.
Units & General Reference
Units, voltages, colors, ratings and terminology.- Unit Converter →
Engineering unit conversions.