# InstElectric Pro - Electricity — Electrical installations

> Electrical installation calculation tool for professionals. (iPhone/iPad app by Angel Martinez.)

- Source: https://appshunter.io/ios/app/instelectric-pro-electricity/id1447888290 (this page in markdown: same URL + `.md`)
- Developer: [Angel Martinez](https://appshunter.io/developer/1446956865)
- Category: Productivity, Utilities
- Price: $4.99
- Rating: 3.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.0 · 15 MB
- Languages: American English, French (France), European Portuguese, European Spanish
- Released: 2019-01-04
- Data updated: 2026-07-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/instelectric-pro-electricity/id1447888290/reviews.md

## What is InstElectric Pro?

Tool to support the calculation of electrical installations that will allow the user (designer/electrician/technician) to perform electrical calculations easily and quickly.

· Dimensioning complete of low voltage circuits with the most frequent installation methods
· Phase cable size, neutral, protective conductor
· Criteria based on the admissible current of the cable, voltage drop and overcurrent protection
· Designation of the most used cables.
· Circuits with automatic circuit breaker until In=4000 A (Ir rating setting), maximum fuse In=1600 A (gG type), maximum 12 conductors parallel per phase, maximum size 630 mm²
· Short-circuits, including MV network, LV lines and final circuit
· Estimate of the maximum short-circuit current (simplified method)
· Maximum protected length for minimum short circuit (approximate method)
· Earthing system with diferentes types of electrodes (rods, buried conductor, rings and grid)
· Distance between the earthing systems
· Forecast of loads of a building destined to houses with several sections: dwellings, common services, commercial premises/offices and garage with/without infrastructure for recharging electric vehicles
· Reactive power of the capacitor bank for the compensation of the power factor (cos φ) and capacity (µF) of the capacitors
· C/K Factor for automatic capacitor bank
· Frequency resonance capacitors
· Compensation of the power factor for a three-phase transformer
· Choice of installation system in the function of the circuit, cable and its situation
· Overvoltage due to defects to earth in medium voltage MV depending on the earthing systems
· Power in an unbalanced three-phase system
· Overvoltages due to loss of neutral conductor, earth fault and short circuit
· Electricity parameters of a single-phase or three-phase (balanced)
· Transformer performance
· Secondary voltage of a transformer acoording to switch position
· Distribution of load of transformers in parallel
· K-Factor transformer
· Current transformer
· Verification resistance of the assembly to short-circuits
· Dissipated power of a assembly
· Size of trays and conduits
· Conduits characteristics according to the installation method
· Conversions of wire sizes (mm²-awg) and conduits threads
· Impedance, resistance and reactance of a cable
· Representation of the curves of the protections
· International protection IP - IK

Parameter settings for calculations:
· Constants (voltages, conductivity, temperatures, etc.) that affect electrical calculations
· Protections (circuit breakers and fuses)
· Selection of minimum rate for circuit-breakers with regulation and maximum cable size for multi-conductor grouping per phase
· Method estimation of the reactance
· Conductivity of the conductor depending on the current of the circuit (constant, according to the expected current, maximum cable temperature)
· Use reduction factors by grouping cables/circuits
· Use of factors of diversity/utilization

· Reference documents: IEC Standards, REBT (sp), Technical Application Guide, (UE) 2016/364

IN NO CASE SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT OR INDIRECT DAMAGES AS A RESULT OF THE CORRECT OR INCORRECT USE OF THE APPLICATION

## Key features

- Low voltage circuit dimensioning
- Short-circuit current calculation
- Earthing system design
- Load forecasting for buildings
- Power factor compensation
- Cable and conduit sizing
- Protection curve representation


## Frequently asked questions about InstElectric Pro

### What is InstElectric Pro used for?

InstElectric Pro is a tool designed to support the calculation of electrical installations, enabling users like designers, electricians, and technicians to perform these calculations easily and quickly.

### What types of electrical calculations can InstElectric Pro perform?

InstElectric Pro can perform dimensioning of low voltage circuits, calculate short-circuits, design earthing systems, forecast building loads, and handle power factor compensation, among many other electrical engineering tasks.

### Is InstElectric Pro available on multiple devices?

Yes, InstElectric Pro is supported on both iPhone and iPad devices, allowing for flexibility in where and how you use the application.

### How often is InstElectric Pro updated?

The latest version of InstElectric Pro is 3.0.2, which was last updated on January 22, 2026. This indicates a commitment to ongoing development and improvements.

### What is the price of InstElectric Pro?

InstElectric Pro is a paid application, available for purchase at $4.99. This one-time purchase grants access to all its features.

### What is the age rating for InstElectric Pro?

InstElectric Pro has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in electrical concepts.

### Does InstElectric Pro have ads?

No, InstElectric Pro does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused on its calculation functionalities.

### What are the key criteria used for cable sizing in InstElectric Pro?

InstElectric Pro bases cable sizing on criteria such as the admissible current of the cable, voltage drop, and overcurrent protection, ensuring safe and efficient electrical installations.

## Version history (last 5 releases)

### 3.0.2 — 2026-01-22

* Minor fixes

### 3.0.1 — 2026-01-15

* Minor fixes

### 3.0.0 — 2026-01-11

* Minor fixes

### 2.9.1 — 2023-12-29

* Minor fixes and performance improvements

### 2.9.0 — 2023-05-03

- Fixes and improvements in curves and index IP - IK

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## More apps by Angel Martinez

- [InstElectric - Electricity](https://appshunter.io/ios/app/instelectric-electricity/id1447422315)
- [Calculation of lighting](https://appshunter.io/ios/app/calculation-of-lighting/id1448345451)
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- [Photovoltaic solar panel](https://appshunter.io/ios/app/photovoltaic-solar-panel/id1481439671)
- [SLD \| Electrical diagrams](https://appshunter.io/ios/app/sld-electrical-diagrams/id1534899128)

All apps by Angel Martinez: https://appshunter.io/developer/1446956865

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*