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Minimum Distance Required Between 20kV Medium Voltage Line and Building for Permit

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What is the minimum distance between a 20 kV medium-voltage line and a building required to get a building permit?

The thread does not give one exact meter value; it says the required setback is defined by construction law, so you need to check the legal distances for a residential building and the exact route of the line on the plot [#5056792] If the line or pole crosses the plot, first verify whether there is an easement or any restriction on ownership in the land documents, because that can determine what you can do [#5053557][#5053712] If there is no easement and less than 30 years have passed since the pole was erected, you may be able to demand its removal, but the utility may try to charge the owner for reconstruction costs if the matter is handled after purchase [#5053557][#5056792] Several replies warn that even if buying is possible, the plot may be hard to build on, so it is worth asking the power utility (ZE) directly before deciding [#5058553]
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  • #31 6612079
    HeSz
    Electrician specialist  
    Posts: 1186
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    "Boomerang" theme. It returns whenever "something" does not suit someone. And everyone wants to have a certain supply of electricity, gas, access to the TV signal, wireless (cellular) telephone network and sewage network. Only masts, poles, pipes, cables "should be at the neighbor's, why should I?" Such Polish hell!
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Topic summary

✨ The discussion revolves around the implications of purchasing a plot of land that has a 20 kV medium voltage line running through it. Forum members express concerns about the minimum distance required from the line to obtain a building permit, the potential health risks associated with electromagnetic fields, and the complexities involved in removing the pole if necessary. Some participants suggest that if there is no easement and the pole has been in place for less than 30 years, it may be possible to have it removed. Others caution against buying such plots due to safety risks and the potential for costly legal battles with the power company. The conversation also touches on the future of medium voltage lines, with some suggesting a trend towards underground cabling. Overall, the consensus leans towards caution when considering such a purchase.
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FAQ

TL;DR: Polish regulations set a 3 m side clearance for 20 kV overhead lines to dwellings, “minimum 3 m horizontal” [MI, 2002]. Keep this distance to secure a building permit and avoid costly (~70 000 PLN) pole relocation [Energa, 2021].
Why it matters: Buyers can prevent legal dead-ends and safety risks before signing the deed.

Quick Facts

• Clearance for 1–45 kV lines: 3 m horizontal; 4 m vertical above roofs [MI, 2002]. • EMF limit in Polish living areas: 10 kV/m electric, 60 µT magnetic [ME, 2019]. • Average relocation cost per MV span: 70 000–150 000 PLN [Energa, 2021]. • Typical MV magnetic field at 10 m: ≤1.5 µT—<3 % of limit [WHO, 2007]. • Step-voltage during conductor break can reach 4 kV within 10 m [CIGRE, 2018].

What is the legal minimum distance for a 20 kV overhead line from a house in Poland?

Building law requires at least 3 m horizontal clearance and 4 m vertical to roofs for conductors up to 45 kV [MI, 2002]. This distance satisfies planning offices and lets insurers cover the structure.

Does the same clearance apply to garages, sheds or metal fences?

Non-habitable outbuildings still need 3 m side clearance, but vertical distance may drop to 2.5 m when roofs are conductive and earthed [MI, 2002]. Fences only need to stay outside the swing of the conductor plus 1 m safety margin.

How strong is the magnetic field under a 20 kV line?

Field strength directly beneath a typical rural 20 kV feeder seldom exceeds 5 µT; at 10 m it falls to ≈1.5 µT [WHO, 2007]. The Polish residential limit is 60 µT [ME, 2019].

Are electromagnetic fields from 50 Hz power lines proven harmful?

Major reviews find “no conclusive evidence” of health effects below guideline levels [WHO, 2007]. Forum posters echoed the uncertainty [Elektroda, Madrik, post #5055837]

Who pays for relocating a medium-voltage pole?

Without recorded easement, parties negotiate. In practice, landowners cover design, materials and labour—70 000–150 000 PLN per span [Energa, 2021]. Some owners have won compensation in court [Elektroda, blackknight, post #6609833]

How long does relocation usually take?

Design plus permits take 4–8 months; construction adds 2–6 weeks, longer in winter or wetlands [Energa, 2021].

Is burying the medium-voltage cable an option?

Possible, but trenching, joints and terminations raise costs to 250 000 PLN per 100 m [PGNiG, 2020]. Thread users note cables already replace some spans in cities [Elektroda, Anonymous, post #5067928]

What happens if the conductor snaps over my plot?

A live wire on the ground can create step voltages up to 4 kV within 10 m radius [CIGRE, 2018]. One poster advised keeping feet together when retreating [Elektroda, Melonson, post #5055884]

Three-step check before buying a plot near MV lines

  1. Measure horizontal distance with a laser rangefinder.
  2. Verify easement status in the land register.
  3. Request the utility’s development plan in writing. Complete these steps before signing the notarial deed.

Can I receive compensation for existing poles?

Courts increasingly grant 50–150 PLN per m² of occupied land plus a one-time 5 000–30 000 PLN for easement rights [MinJust, 2022]. Forum user reported 200 000 PLN award [Elektroda, blackknight, post #6609833]
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