How do I connect the wiring to this terminal?
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The one in the picture is called a wiring board, right? Is it okay without a protective cover on it? How to distinguish live wire and neutral wire? Is it by line marking?
L+ is the live wire and should be wired according to the drawing.
Aha, this kind of wiring board is relatively old. Little Japanese people like to use it. It is unreliable and unreliable. It will cause more problems over time! Nowadays, imported joint venture brands or domestic famous brands are much more reliable than this, such as Phoenix, Weidmüller, ABB, etc., which usually use flame-retardant engineering plastics instead of this plastic material. This kind of wiring board must have a protective cover, otherwise it is easy to cause problems during routine maintenance or troubleshooting! Usually the difference between terminals (live wire, neutral wire, ground wire, etc.) is distinguished by wire number. In addition, it can also be distinguished by the cable color code.