When you press the test on the ungrounded outlet it will raise the ground contact to 230 V: As it sees the ground and the live as same and the neutral different it will show reversed polarity. Same happens when it is reversed but now line and ground are zero and neutral 230 V. It only sees differences in voltages, not what they actually mean. A non-contact voltage tester can tell if there actually is voltage on something.
If the neutral and earth are reversed it will trip the RCD immediately when you use the socket so with RCDs that is not an issue. When there is no earth there is no reference to tell which is neutral. The lights are simply wired between the wires so without earth only the light between line and neutral will lit.
Also the RCD test can help to identify which fuse goes to a particular socket, for example in my house there are about 15 fuses. I do have a diagram showing which fuse is for what, but in case i lost that (or didn't have it in the first place) it could help me check which fuse is triggered. Of course, if the main fuse triggers before the fuses for a particular line then it won't help.
But RCD test is supposed to trip the FI/RCD, and not the fuse. Thus the name - RCD test. So it should always trip the RCD and NOT the actual fuse connected to that particular socket that you're testing.
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Just bought one...I can't believe there is no audio indicator !
Hmm, never thought about that 🤔
When you press the test on the ungrounded outlet it will raise the ground contact to 230 V: As it sees the ground and the live as same and the neutral different it will show reversed polarity. Same happens when it is reversed but now line and ground are zero and neutral 230 V. It only sees differences in voltages, not what they actually mean. A non-contact voltage tester can tell if there actually is voltage on something.
Thanks for the clarification 👍🏻
If the neutral and earth are reversed it will trip the RCD immediately when you use the socket so with RCDs that is not an issue. When there is no earth there is no reference to tell which is neutral. The lights are simply wired between the wires so without earth only the light between line and neutral will lit.
Great info!
Also the RCD test can help to identify which fuse goes to a particular socket, for example in my house there are about 15 fuses.
I do have a diagram showing which fuse is for what, but in case i lost that (or didn't have it in the first place) it could help me check which fuse is triggered.
Of course, if the main fuse triggers before the fuses for a particular line then it won't help.
Good point 👍🏻
But RCD test is supposed to trip the FI/RCD, and not the fuse. Thus the name - RCD test. So it should always trip the RCD and NOT the actual fuse connected to that particular socket that you're testing.
True. This would only work if all fuses have integrated RCD.
@@UltimateDIY Yep, and that is almost impossible to expect :)
True. I only have the main fuse of the house with integrated RCD and the fuses from the bathrooms. It would be quite expensive to have all of them.
Parabéns pelo seu vídeo (Congratulations for your video)
Thanks ✌🏼
Very useful video, thanks.
Glad it was helpful!
Unde ai invatat engleza?
Esti mandru de tine? 99% din comentariile legate de felul in care vorbesc vin de la romani.
@@UltimateDIY inseamna ca ai o problema, degeaba intrebi de mandrie, tot praf ramai
Ce viata trista poti sa duci.
@@UltimateDIY nu mai sterge comentariile, cacanarule
Cine poate vorbi românește?