Can I connect power to the electrical panels from the junction box?

Nikolai asks:
Hello. Can I power two small power switchboards from one junction box. Or you need to loop from the upper terminals of the input device of one of the shields. If possible, please provide a link to the regulatory document. Thank you in advance for your reply.
The answer to the question:
Hello! You can power it up if the wire that comes into the box can withstand the load, and if you make a reliable connection. But it is better to feed them from the opening machine. As for the normative document, I can’t recall that this issue is normalized, but as for the looping of the grounding conductor, you need to be more careful here. According to the PUE p. 1.7.139 it is necessary to ensure their continuity, and according to p. 1.7.144. - sequential inclusion of exposed conductive parts in the protective conductor is not allowed.
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