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Answer to a question from a reader of my forum. In what cases is it better to use a TT type grounding system for your home, and when is it better to use a TN-CS type grounding system? Forum: http://ceshka.ru/forum/ Website: http://ceshka.ru/ Subscribe to the video channel: http://www.youtube.com/user/ceshkaru?... Electrician's video lessons - • Electrician's video lessons POWER ENGINEERING - • Power engineering Electrical engineering - • Electrical engineering