Color marking of wires from the boiler

Help me figure it out, if I understand correctly in electrics, blue is zero, yellow-green is grounding, everything else is a phase. I understand correctly that those contacts that are connected by a copper plate are 0, and blue in this case is a phase?

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  • Admin

    Hello! It will be better if you send a photo, I can’t say so. And the boiler model would not hurt.

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