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Important links: Do you need good Excel files for installation pricing, circuit division, selectivity of protection? I invite you to my store on zpe24.pl or on allegro. You will also find there templates of descriptions for switchboards and markers and guarantee seals. 📊 Files for electricians, consultations, markers and more 👉 https://zpe24.pl/shop-full-width/ 🛒 Allegro store with files and markers 👉 https://allegro.pl/uzytkownik/ZPE_MK Other social media: 🔵Facebook: / z.poradnika.elektryka 🟡ZPE Group: / z.poradnika.elektryka 🟠zpe24.pl website: https://zpe24.pl/ ⚫Tik Tok: https://vm.tiktok.com/ZMR9vS4E7/ 🟣Instagram: / z.poradnika.elektryka Channel support💰 PAYMEDIA: 👉https://www.paymedia.pl/zporadnikaele... PATRONITE: 👉https://patronite.pl/zpe_mk/description 👉What is this video about❓ From this video you will learn what types of grounding are permissible, what materials and dimensions can be used to make a grounding. What are the minimum cross-sections of protective and protective-neutral conductors and what methods of dividing PEN we have. ⛔ ATTENTION !!! ⛔ ⚠️ CURRENT KILLS, BE CAREFUL !!!⚠️ All electrical work should be performed by people with appropriate authorizations and professional qualifications, people without appropriate qualifications should not perform electrical work. Apparatus used in this video: Table of contents: