ENERTIA · Knowledge base
Guides, company news and project descriptions. Stay up to date with the electrical industry - no jargon, no fluff.
The photovoltaics market has saturated, and some sellers have switched to energy storage - companies are receiving offers tempting them with a return in 2-3…
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NFOŚiGW and the four largest network operators have signed agreements for the construction or expansion of 147 connections for charging stations - investments will cover…
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The Gov.pl portal makes it easier to handle official matters online. Check which things related to home electrical safety cannot be…
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AFDD is a device that detects characteristic disturbances accompanying a dangerous electrical arc and disconnects the circuit before…
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A fault in an apartment, modernisation of an installation in a house, or technical maintenance of a company or housing association building - in each of these situations…
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You know the price of the service before we start work. Settlement should be just as clear: a document confirming each payment, a choice of convenient…
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The main switch disconnector provides one, reliable place where the installation or part of it is disconnected and safely isolated for the duration of work, faults or…
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Porcelain fuses in the box on the staircase are not yet a death sentence for the installation, but they are also no reason to forget about it. We explain how it works…
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A residual current device monitors whether the current flowing into the circuit returns from it in its entirety. We explain what 30 mA and 40 A really mean…
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B16, C16, D16 - these symbols can be seen on every circuit breaker in the distribution board, but rarely does anyone explain what they really mean. We explain current…
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A timber-frame house does not have a single "special" fuse rating. The combustible structure increases the importance of protection against the effects of...
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A new service technician entering an unfamiliar staircase wastes the first twenty minutes of the visit on the same thing: looking for the distribution board, calling for the gate code...
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The manager has a measurement report, an energy performance certificate, and a folder of documents from their predecessor in the binder - and when asked when the...
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"How much will it cost?" - the first question with every renovation and every new installation. We show the market ranges for 2026, with...
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A car service book is a given: without it, the car loses value, and you do not know what was done and when. An electrical installation...
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You can check the status of a courier package in two seconds. You can see a taxi on the map before you even walk out of the building. Why should a visit...
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An energy performance certificate is mandatory - without it, you cannot sign the deed. But it is the installation measurement report that cuts short negotiations "because the old...
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A copy of the energy performance certificate with the tenancy agreement is a statutory obligation, and a working electrical installation is the landlord's responsibility...
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Before you call anyone, check three things. This simple scheme tells you when the problem will be fixed by the network operator, when by the administrator...
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Lightning does not have to strike your house to take out your inverter, TV, and boiler motherboard. We explain how surge protection really works...
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A loose connection in a distribution board heats up for weeks before it stops the plant - and during all this time, it is perfectly visible in the thermal camera...
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On the distribution invoice of many companies, an item appears every month that few understand - the charge for reactive energy. We explain where...
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A well-prepared 5-year inspection takes less time, costs less, and does not drag on with "second appointments" for six months. A concrete list of things...
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More and more often, it is not the apartment owners calling us, but their adult children. This guide is just for them: seven things that...
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Residual current devices (RCD) and overcurrent protection trip for different reasons - and indicate different problems. How to tell them apart, what...
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An induction hob can draw more power than all other appliances in the apartment combined. In large-panel system blocks of flats and in...
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After flooding a basement, garage or flat, the biggest mistake is turning the power back on "as a test". We explain the correct order: starting from disconnecting...
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Prawo budowlane (Polish Building Law) requires periodic inspection of electrical and lightning protection systems at least once every 5 years. We explain who this applies to...
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"By eye" is the most expensive diagnostic method in electrical work. We explain in plain English what an electrician with a meter measures, what the results mean and how to read...
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Aluminium, no earthing, a fuse board - sound familiar? Replacing the installation does not have to mean moving out and a dug-up flat....
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"It will be about 200 zł... and it came to 900" - the most common story we hear from customers after their experiences with the market. We explain where...
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A heat pump is one of the largest electricity consumers in a home. An installation audit before purchase costs a fraction of the investment - and protects against...
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The photovoltaic boom has left behind thousands of installations set up in a hurry. Surge protection, earthing and the condition of connectors are...
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In a detached house, a wallbox is a matter of one good technical decision. In a block of flats - procedures, expert opinions and talks with the housing association....
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Induction hob, heat pump, car charger - today's home can need twice as much power as a decade ago. We explain the difference between...
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You can replace the installation in each flat individually and still have a problem: the bottleneck of an old building is the shared power supply....
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Moisture does not cut off the power overnight - it acts slowly: it corrodes contacts, lowers insulation resistance and causes faults that "sometimes are...
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Replacing a coal burner with electric heating is often the simplest way to get heat without coal - provided that the electrical installation...
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At the handover, everyone looks at the walls and windows, while the electrical installation "cannot be seen". Meanwhile, a defect entered into the handover report is...
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An energy performance certificate has been mandatory for sales and rentals since 2023 - and in 2026 the regulations went further: the new...
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Execution of a measurement campaign for a housing cooperative. Offline-first PWA, cloud synchronisation, PN-EN reports in...
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We have obtained the NCAGE code, which opens the door for us to contracts in the defence sector. Find out what the NATO CAGE system is and what it means for...
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Smart lighting, roller shutter control, motion sensors - a guide to Smart Home without complicated terminology. Practical advice...
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How we modernised the complete electrical installation in a tenement house from 1920, preserving the character of the building. 48 units, 3 months, zero...
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We are proud to announce our partnership with Leroy Merlin Poland. What does this mean for our customers? Higher standards, better access to…
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