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Types of Earthing System for Electricity Supplies (UK)

The three main types of earthing for mains electricity supplies to buildings in the UK. TT, TN-S and TN-C-S.

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Видео Types of Earthing System for Electricity Supplies (UK) канала John Ward
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Информация о видео
21 августа 2014 г. 1:39:23
00:18:00
Яндекс.Метрика