ElectricalEngineeringCalcsKit
iOS Universel / Utilitaires
EE Calculators is a professional electrical engineering reference tool built to NEC 2023 standards. Designed for electricians, electrical engineers, inspectors, and students who need fast, accurate calculations on the job or in the field. One of the most comprehensive set of calculators. ElectricalEngineeringCalcsKit is a unique, purpose-built NEC 2023 compliant electrical engineering calculator suite designed specifically for licensed electricians and electrical engineers. It includes 14 integrated calculators covering NEC Articles 210, 220, 240, 250, 310, 430, 445, and 450, with SwiftData-backed calculation history, real-time NEC code references on every screen, and a professional dark UI designed for field use.
CALCULATORS INCLUDED:
- Voltage Drop — Calculate conductor voltage drop per NEC 210.19 & 215.2. Supports single-phase and three-phase circuits with copper or aluminum conductors.
- Wire Size & Ampacity — Determine minimum wire size using NEC Table 310.12 with ambient temperature correction and conductor bundling adjustment factors.
- Conduit Fill — Calculate conduit fill percentage per NEC Chapter 9. Supports EMT, IMC, and RMC conduit types with THWN conductors.
- Breaker & Fuse Sizing — Size overcurrent protection for continuous and non-continuous loads per NEC 210.20 and Article 240.
- Grounding Conductor — Size grounding electrode conductors and equipment grounding conductors per NEC Tables 250.66 and 250.122.
- Ohm's Law — Enter any two known values (V, I, R, or P) and instantly solve for the remaining two using V=IR and P=VI.
- Power Factor — Calculate real power, reactive power (kVAR), apparent power (kVA), power factor angle, and correction capacitor sizing.
- Energy Consumption — Estimate energy usage in kWh and monthly/annual electricity cost based on load wattage, operating hours, and utility rate.
- Lighting — Calculate average illuminance in footcandles or lux using the Zonal Cavity Method per IESNA RP-1.
- Motor Calculations — Determine motor full-load current from NEC Table 430.250, branch circuit wire size, overload protection, and OCPD sizing per Article 430.
- Transformer Sizing — Size single-phase and three-phase distribution transformers based on connected load with spare capacity allowance per NEC Article 450.
- Generator Sizing — Calculate standby or prime generator kW/kVA requirements from a dynamic load list with demand factors per NEC Article 445.
- Panelboard Load — Compute total connected and demand loads for panelboards with continuous/non-continuous load handling per NEC Article 220.
- Short Circuit — Estimate available fault current at transformer secondaries for overcurrent device interrupting rating selection per IEEE 1584.
KEY FEATURES:
- NEC 2023 compliant calculations
- Save calculation history for future reference
- Copy results to clipboard instantly
- Universal app — optimized for iPhone and iPad
- Professional dark theme designed for field use
- Searchable calculator list with category filters
- Built-in NEC code references on every calculator
- Detailed descriptions for every calculation type
IMPORTANT: These calculations are for reference purposes. Always verify results against the current adopted NEC edition and local amendments. Consult a licensed professional before installation.
