ENERTIA · Knowledge Base

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Guides, company news, and project descriptions. Stay up-to-date with the electrical industry - jargon-free and to the point.

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Guide10 August 20267 min

Energy storage for business - how to tell a reliable analysis from a 2-year payback promise

The photovoltaics market has saturated, and some salespeople have shifted to energy storage - businesses are receiving offers tempting them with a 2-3 year payback period. The industry portal WysokieNapiecie.pl has just described five real-life cases from an energy advisor's practice, showing how easily such spreadsheets diverge from actual meter data. We suggest what to ask the salesperson and what data to gather before you sign a contract.

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News28 July 20266 min

EV charger at home - how to prepare your installation as the charging network grows

NFOŚiGW and the four largest grid operators have signed agreements for the construction or expansion of 147 connections for charging stations - the investments will also cover Dolny Śląsk. The public network is growing, but daily car charging still mainly takes place at home. We advise how to prepare your installation for this: from connection capacity to protections.

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Guide18 July 20266 min

AFDD: how does it detect dangerous arc faults and when is it used?

An AFDD is a device that recognises the characteristic disturbances accompanying a dangerous electric arc and trips the circuit before ignition occurs. However, it does not replace a miniature circuit breaker, an RCD, or properly made connections. We explain calmly how it works and when it is worth considering.

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Guide18 July 20267 min

More than just a repair. How to consciously choose an electrical company?

A breakdown in your flat, modernising an installation in your house, or technical support for a company building or housing association - in each of these situations, you're not just choosing the execution of a specific task. You're also choosing how the entire job will be managed: from the first contact, through arrangements, to information about exactly what has been done. We advise on what to look for to make this decision fully informed.

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Our standard18 July 20267 min

How to pay for a service or installation renovation? 0% instalments, hybrid model and invoice for every job

You know the price of the service before we start work. The settlement should be just as clear: a document confirming every payment, a choice of convenient payment methods and the option to spread a larger expense over time. We explain how payments work at ENERTIA - from receipts and invoices, through 0% instalments, to hybrid payments where you pay part of the amount upfront and the rest in instalments.

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Guide18 July 20266 min

Old cartridge fuses at home: what to check and what never to do?

Porcelain fuses in the hallway fuse box are not a death sentence for your installation, but they are no reason to forget about it either. We explain how a fuse link works, what you must never do with it, and what an electrician should check before you decide on an upgrade.

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Guide18 July 20267 min

Residual current device: what do 30 mA, 40 A and types AC, A, F and B mean?

A residual current device monitors whether the current flowing into a circuit returns from it in its entirety. We explain what 30 mA and 40 A really mean and how types AC, A, F, and B differ. We also show what this device cannot do and when it is worth asking an electrician to check it.

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Guide18 July 20266 min

Miniature circuit breaker demystified: what do B16, C16 and other symbols mean?

B16, C16, D16 - these symbols are visible on every circuit breaker in the distribution board, but their actual meaning is rarely explained. We explain nominal current, B, C, and D characteristics, as well as short-circuit capacity, and show why they must never be replaced on one's own.

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Guide18 July 20267 min

Electrical protection in a wooden house: what do you really need to consider?

A timber-frame house does not have a single "special" fuse rating. A combustible structure increases the importance of protection against thermal effects and the quality of connections, but the selection of each device depends on the circuit, cable, load, and installation conditions. We show the decision process, not a ready-made list.

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Our standard17 July 20266 min

We know your buildings inside out - Enertia's digital building record

A new service technician in an unfamiliar stairwell wastes the first twenty minutes of a visit doing the same thing: looking for the distribution board, calling for the gate code, asking administration who has the basement keys. We have this knowledge before we even arrive at the address - because we maintain a digital record for every serviced building.

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Guide17 July 20268 min

A report is not a certificate, a certificate is not a passport - what your building's documents really say

The administrator has a measurement report, an energy performance certificate, and a folder of documents from the predecessor in their binder - yet still doesn't know when the distribution board was replaced. It's not their fault. Each of these documents answers a different question about the building. We explain in plain language which document says what, what none of them say, and how to organise it sensibly.

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Our standard13 July 20267 min

Installation Passport - one document that holds the entire history of your electrical system

A car's service book is obvious: without it, the car loses value, and you don't know what was done and when. A home's electrical installation is worth more than many cars, operates 24/7, and the law requires it to be tested periodically - yet its "service book" is usually nowhere to be found. We're changing that: with the installation passport.

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Our Standard13 July 20266 min

“Where’s the electrician?” - with us, you can see. Live visit tracking, step by step

You check a parcel's status in two seconds. You see a taxi on the map before you even leave your building. Why should it be any different with an electrician's visit? With us, it isn't: every job has a live preview - stages of completion, estimated arrival time, and the technician on a map. No app, no account, no calling.

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Guide13 July 20267 min

Selling a flat or house? Documents the notary - and buyer - will ask for

An energy performance certificate is mandatory - without it, you won't sign the deed. But it's the installation measurement protocol that cuts off negotiations about 'old electrics'. What to prepare before listing and how to get both documents in one visit.

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Guide12 July 20265 min

Manager's checklist before the five-year inspection (PDF download)

A well-prepared five-year inspection takes less time, costs less, and doesn't come back for a 'second appointment' for half a year. A specific list of things to prepare - to print and tick off, with a PDF file to download.

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Guide12 July 20266 min

Safe senior home: an installation that doesn't need monitoring

More and more often, it's not apartment owners calling us, but their adult children. This guide is for them: seven things worth checking in parents' homes - and how to arrange an electrician's visit remotely.

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Guide12 July 20267 min

Electrical inspection every 5 years - an easily forgotten obligation

Building law requires periodic inspection of electrical and lightning protection systems at least once every 5 years. We explain who this applies to, what exactly the inspection covers, and how to carry it out efficiently in a building full of tenants.

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Guide12 July 20267 min

Main supply lines and risers - the weakest point of old multi-family buildings

You can replace the installation in each apartment separately and still have a problem: the bottleneck of an old building is the common power supply. We explain what a main supply line (WLZ) is, how to tell if it's insufficient, and what modernisation looks like without relocating tenants.

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Project10 April 20255 min

Measurement campaign - 200 premises in 5 days

Execution of a measurement campaign for a housing cooperative. Offline-first PWA, cloud synchronisation, PN-EN protocols in digital format.

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News1 April 20254 min

NCAGE Code - Enertia in the NATO system

We have obtained the NCAGE code, which opens doors to contracts in the defence sector. Learn what the NATO CAGE system is and what it means for institutional clients.

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Guide20 March 20256 min

Smart Home for beginners - where to start?

Smart lighting, roller blind control, motion sensors - a Smart Home guide without complicated terminology. Practical tips to get started.

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News10 February 20253 min

Enertia official partner of Leroy Merlin Polska

We are proud to announce our partnership with Leroy Merlin Polska. What does this mean for our clients? Higher standards, better access to materials, and new opportunities.

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