FREE FOREVER · NO SIGN-UP
Up to 100 kW, one circuit at a time, in the browser. Enter the circuit data and get the cross-section, current capacity, voltage drop, protective device, short circuit and the CEI 64-8 checks — each with its clause. No account, no card.
The calculator opens on app.mantiqi-engineering.com, the ElecCalc platform. Interface in Italian, English and French.
01 — What it works out
The same calculation engine as ElecCalc Base, open to anyone for the most common case: a single low-voltage circuit.
Open the free calculatorSingle-phase or three-phase, from the power and the power factor.
Of the live conductors and of the protective conductor.
With the factors for temperature, grouping and installation method.
In volts and per cent, over the actual length.
Rating and tripping curve coordinated with the cable.
Fault current and the cable's thermal withstand.
Every check with its result and its clause of the standard.
02 — How to use it
From a computer or a phone, on site too. Nothing to install, nothing to register.
System, power, length, installation method and cable. The same fields you fill in on a real project.
Proposed cross-section, coordinated protective device and every check with its CEI 64-8 reference. If something fails, you see why.
03 — Declared limits
One low-voltage circuit at a time, up to 100 kW. Forever, with no expiry and no countdown.
Results with the standard reference: you always know which clause you are checking.
Circuits above 100 kW, networks of boards, medium voltage, take-offs: for those there is ElecCalc Base.
The design in your place. It is a support tool: assumptions, choices and the result remain with the responsible professional.
04 — When you need more
ElecCalc Base brings this engine into the drawing: select the block, size it, pick the protective device from 16,000 devices by six manufacturers and save. The drawing becomes the project database, with take-off and report ready.
Real screenshot of ElecCalc Base in AutoCAD
Frequently asked questions
It is free forever for sizing and verifying a low-voltage circuit up to 100 kW. It does not expire, it does not ask for a card, it does not ask for an account. The 14-day trial is for a different product, ElecCalc Base for AutoCAD.
No. Open the address and start entering the data.
It is the same calculation engine as ElecCalc Base, and every check quotes the CEI 64-8 clause it applies. It remains a support tool: installation conditions, temperature, upstream protection and special requirements can change the result, and responsibility for the design stays with the professional.
You need ElecCalc Base, which has no such limit and also writes the result into the drawing. You get 14 days of trial with no card to see whether it suits you.
Yes: it is a web page, it works from any browser, on site too.
One minute, no sign-up, results with the standard clause.