Calculators
Work it out without signing up and without leaving an address. Everything runs in the browser, including on site with one bar of signal. Beside every result is what it rests on.
Choose the type of installation, add the date of the last inspection — and you see the interval, the next due date and the time remaining. Where the classification is not clear-cut, the calculator says so instead of inventing a number.
Calculate the inspection intervalZGB Art. 837 / 839Four months from completion to register the contractor's lien, alongside the warranty period under SIA 118 and the limitation period under the OR. With the days remaining, big enough to read at a glance in the van.
Calculate deadlinesPronovo, EnFVTwelve months after commissioning the entitlement to the one-off feed-in subsidy is forfeited. The calculator names the last day — and the mistake that happens before it and costs more.
Calculate the EIV deadlineOffice workloadJobs per month, minutes of office work per job, the internal hourly rate — and you see what the office costs in a year. How much of it falls away is your setting: there is no percentage from us there.
Calculate the office workloadWhat these calculators are and what they are not
They are a guide for day-to-day work, not a substitute for judging the individual case and not legal advice. What counts is the ordinance and the contract, and in case of doubt the responsible inspection body, the grid operator or your lawyer. We name the basis for every result so that you can look it up yourself.
The calculation runs entirely on your device. Nothing is transmitted and nothing is stored.
elektro.box keeps installations, inspection intervals and retentions with their dates and speaks up beforehand. We will show you in half an hour on your own properties.