Comparison

Fault Current Calculator vs Generac Field Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fault Current Calculator

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

Highlights
  • Calculate available fault current
  • Size fuses and conductors
  • Generate service equipment labels
  • Single and three-phase system support
  • NEC® 110.24 compliance
Features
Read full description

Eaton's Bussmann Series FC2 Available Fault Current Calculator application is an innovative tool developed for contractors, engineers, electricians, and electrical inspectors. This tool can be used on the Bussmann website or out in the field on a mobile device for those needing a quick and simple way to determine available fault current. With this simple tool, users can: - Calculate available fault current on single and three-phase systems - Create and send a label via email for marking the available fault current on service equipment (NEC® 110.24) - Size fuses and conductors for service, feeder, and branch circuits. This application, calculations, and other information are intended to clearly present technical information that will determine the available fault current at specific points in an electrical system. Bussmann reserves the right, without notice, to change this application and/or discontinue/ limit its distribution and/or availability. Bussmann also reserves the right to change or update, without notice, any technical information contained in this application. The data and information presented in this application are believed to be accurate. However, any and all liability for the content, or any omissions from this application, including any inaccuracies, errors, or misstatements in such data, calculations or information, is expressly disclaimed. The application, calculations and other information are provided without warranty of any kind, either expressed or implied, but not limited to, the implied warranties of merchantability, or fitness for a particular purpose. Bussmann disclaims any liability for the use of this application, calculations or other information. The complete End-User License Agreement can be found at: https://faultcurrentcalculatorpro.bussmann.com/home/eula

About

Generac Field Pro

Streamline the installation, servicing, and registration of energy systems. Features guided workflows, smart firmware updates, and comprehensive diagnostics for efficient system management.

Highlights
  • Guided commissioning workflow
  • Smart firmware updates
  • Full system testing
  • Product diagnostics
  • In-app activation and registration
Features
Read full description

Commission and service Generac energy systems fast. One app for guided installs, system tests, diagnostics, and instant registration across compatible platforms. In the app, installers will find: Guided Commissioning Workflow: Step-by-step commissioning ensures smooth onboarding and streamlined commissioning across all compatible systems. Smart Firmware Updates: Apply fast firmware updates directly from Field Pro and reduce total installation time. Full System Testing: Verify system health and performance with a full suite of validation tools. Product Diagnostics: Troubleshoot with confidence, with full system performance and health information. In-app Activation: Finalize installation with a few taps—register warranty and activate products seamlessly from your device.

Screenshots

Fault Current Calculator4 screens
Generac Field Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: Generac Field Pro at none against Fault Current Calculator's 2. Generac Field Pro also leads on update cadence (fortnightly vs every 4 months) and review sentiment (11% vs 0%). Fault Current Calculator's advantage is iOS requirement (14.0 vs 16.0). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Generac Field Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.1 for Fault Current Calculator against 3.1 for Generac Field Pro. Both are backed by a comparable volume of ratings — 23 and 26 respectively. Written reviews are what separate them: 0% of Fault Current Calculator's written reviews are positive against 11% of Generac Field Pro's.

UpkeepUpdate frequency

Fault Current Calculator ships an update every 4 months, Generac Field Pro fortnightly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Fault Current Calculator versus Generac Field Pro: the parameters behind the verdict, then further details
ParameterFault Current CalculatorGenerac Field Pro
PriceFreeFree
Rating3.1 (23 ratings)3.1 (26 ratings)
Positive reviews0.0% of reviews11.1% of reviews — better
Number of ratings2326 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.0
Further details — not scored
Size25 MB71 MB
Age rating17+4+
DeveloperCooper Bussmann, LLCGenerac Power Systems, Inc.

Customer experience

Fault Current Calculator

All ratings23 ratings
Positive47.8%
Neutral8.7%
Negative43.5%
Written reviews10 reviews
Positive0.0%
Neutral20.0%
Negative80.0%

Generac Field Pro

All ratings26 ratings
Positive46.2%
Neutral7.7%
Negative46.2%
Written reviews9 reviews
Positive11.1%
Neutral11.1%
Negative77.8%

In-app purchases

2 purchases

Fault Current Calculator

Subscriptions2
  • Pro Monthly Subscription7 Days trial$4.991 Month
  • Pro Annual Subscription7 Days trial$39.991 Year
None

Generac Field Pro

No in-app purchases

Questions

Is Fault Current Calculator free?
Fault Current Calculator is free to download, with in-app purchases available.
Is Generac Field Pro free?
Generac Field Pro is free to download, with no in-app purchases.
Which has better reviews, Fault Current Calculator or Generac Field Pro?
Fault Current Calculator and Generac Field Pro are both rated 3.1 out of 5 on the App Store, from 23 and 26 ratings respectively.
Do Fault Current Calculator or Generac Field Pro have ads?
Neither Fault Current Calculator nor Generac Field Pro shows ads.
Which is updated more often, Fault Current Calculator or Generac Field Pro?
Fault Current Calculator ships an update every 4 months, and Generac Field Pro fortnightly. Most recently, Fault Current Calculator was updated on October 2, 2026 and Generac Field Pro on October 14, 2026.

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