File:Correct TN-C in old apartment building.JPG
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DescriptionCorrect TN-C in old apartment building.JPG |
English: Correct neutralling (TN-C) in old apartment building.
Русский: Более правильный вариант зануления (TN-C) в квартирном доме советской постройки.
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Source | Own work | ||
Author | Dmitry G | ||
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Annotations InfoField | This image is annotated: View the annotations at Commons |
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English: Neutral wire is holding on last breath, so powerful electric appliences able to burn it and interrupt the contact between neutral wire and busbar. That is why TN-C can't provide safe earthing nowadays.
Русский: Нулевой провод в 30-летнем возрасте держится на честном слове, поэтому мощная бытовая техника может без труда сжечь провод и ликвидировать контакт между нулевым проводом и шиной раздачи проводов. Поэтому на сегодняшний день TN-C больше не является безопасным способом заземления.
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English: Neutral wires are thick and fixed very weakly, so only idiots will use them as PEN-wire.
Русский: Нулевые провода имеют слишком маленькое сечение и контакты не подтягивались 30 лет, только глупые будут использовать такие провода в качестве PEN-проводника.
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English: Very stinging disease of Soviet-era apartment buildings: 10mm² of aluminium, which is not allowed nowadays. But it is not all the problem. There is more bigger problem, than you can imagine: those thick aluminium lines were protected by 125A fuses in main panel with TN-C earthing and all apartments are single-phase. Nowadays 20-30A stoves and other appliences became as reason of neutral wire lost quite often.
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current | 20:37, 31 October 2011 | 3,640 × 3,430 (2.96 MB) | Dmitry G (talk | contribs) | {{Information |Description ={{en|1=Correct neutralling (TN-C) in old apartment building. *NB! Using neutral wire as the ground wire is strictly forbidden in new installations!!!}} {{ru|1=Более правильный вариант занулени� |
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Author | Dmitry G |
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Rating (out of 5) | 5 |