Frequently asked questions

Voltline is a collection of free, browser-based electrical-engineering tools. The first one is an arc flash calculator, with more tools planned.

Yes. There is no account, no paywall and no usage limit. Just open the tool and start calculating.

Incident energy and arc-flash boundary are computed per IEEE 1584-2018. The empirical model covers three-phase systems from 208 V to 15 kV, with the Lee method as a conservative fallback above 15 kV. PPE category classification follows NFPA 70E-2024 Table 130.5(G).

No. All calculations run entirely in your browser. Your inputs are never uploaded to a server, and nothing is stored after you close the page (apart from optional report details you choose to save locally).

The tool is for engineering analysis assistance only. Results should always be reviewed and verified by a qualified engineer before being used for any safety-critical decision. The author assumes no liability for misuse.

The IEEE 1584-2018 empirical model is used for 208 V up to 15 kV. Above 15 kV the tool falls back to the conservative Lee method (IEEE 1584 Annex B).

Yes. After a calculation you can export a professional PDF report including your inputs, both scenarios, the worst-case results, the required PPE and an engineering interpretation. You can add your name, email and even your own logo.

Voltline is built by Ali Iguider, an MV/LV systems engineer. Read more on the About page.