Grounding the bathtub and the washing machine
Hello, I’m interested in the issue of grounding the bathroom (the bath itself is acrylic inserted in cast iron). I made grounding on the washer, an additional RCD will be on the line. Can I use the grounding of the washing machine to ground the bathroom? And how to properly ground the bath, do you mean from the legs or do you need to additionally weld?
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No you can not. RCD by the way has no relation to grounding. So I recommend grounding all the conductive parts in the bathroom. The main rule is to put the PMC box of potential equalization, start from each grounded PV-3 w / z 2.5kV and already from this box throw one common PV-3 w / w 6kv at least on the main floor bus or main block in the panel or apartment or floor shield. You can learn more about the potential equalization system from our article https://my.electricianexp.com/en/zachem-nuzhna-sistema-uravnivaniya-potencialov.html