English: http://www.domoelectra.com/detectar-d... How to detect a ground fault or defect part 1, electricity fault, the differential trips. Subscribe that does not give current http://goo.gl/yGSZ3O :) VERY HELLO, DOMOEQUIPO! Excited, motivated! This week we are faced with an unusual breakdown. In a first contact with the client, he tells us that the 16 A protection magnetothermal switch trips unexpectedly, and also feels current inside his house when touching certain metal objects in his home, What could be causing this breakdown? In this DomoAventura, we are detectives for a day again. WILL YOU JOIN ME? After this first contact, everything points to an equipotential problem with the grounds or an inadequate installation of the same, the variables are many and diverse, so, the best thing will be to proceed to identify where the possible problem is. We found the 16 A thermal-magnetic switch lowered, and when we raised it the differential tripped, which indicates a possible earth fault. The next step is to see the output wires of said mechanism to see where they flow. Curiously, when leaving the 16 A thermal switch and the Differential only connected, the former does not trip. Logically, we have tested all the permutations of connected thermal switches to see when said thermal switch trips or not. Coming to the conclusion that the 10 A lighting thermal switch is also influenced by the fault (Do you remember the lamp that gave current?) We disconnected the lamp and reassembled the 10 A thermal switch, but the differential continues to trip. Given the vicissitudes, we also observed that the connection cables are reversed in polarity, so we have inverted their connection order (neutral on the right, neutral on the left), but the same problem described up to now continues to appear. The next thing we are going to do is measure the grounds with our clamp meter. After all the checks, when measuring phase and ground it gives us 390.5 V instead of 230 V. And when measuring neutral with ground it gives us approximately 200 V, when it should be 0 V. This indicates that the problem comes from outside and not inside the house. So we are going to continue investigating. When we locate the ground outside the house, it is with its bare wire, with rust, mold... we proceed to disconnect it and measure again in the electrical panel giving us the same results. What does it mean? That there is no ground installed. As it is better to prevent than to ensure, we use a multifunction meter as a last resort which confirms the measurements from the beginning. We do a differential jump test and curiously, as it is greater than 280 V it prefers not to act for safety. Given what we have seen, it is clear and in a bottle, we have a serious ground problem and it will be necessary to install a new stake. But we'll see about that next week. More technical stories at http://goo.gl/piJGdt Can I have a like? RT? Share? These things, believe it or not, help us optimize the videos :) All the products that appear in the video available in your online store, I leave you links: 1. Multifunction tester: http://www.domoelectra.com/tiendaonli... 2. KRANG Amperimetric clamp: http://www.domoelectra.com/tiendaonli... 3. Ground spike: http://www.domoelectra.com/tiendaonli... 4. Schneider differential: http://www.domoelectra.com/tiendaonli... More info on the web: http://www.domoelectra.com Online Store: http://domoelectra.com/tiendaonline Your blog: http://www.domoelectra.com/blog DONATIONS: https://goo.gl/MbCePZ Free Download DomoGame chapter 1 and 2: http://domoelectra.com/tiendaonline/8... Free Download DomoGame chapter 3: http://www.domoelectra.com/tiendaonli... Domo Electra Android App: http://goo.gl/9tTbtR We follow you on social networks: Twitter- http://goo.gl/G6D1Ef Facebook- http://goo.gl/n8reWp Google Plus- http://goo.gl/N7UdyH Instagram- / domoelectra