What cable to pull from the pipe entry into the house?

Ruslan asks:

Hello dear electricians! I’ve assembled a 3-phase box with YouTube meters and a pipe counter for the pipes, now I don’t know what cable to use in the cabins and summer houses.

In my possession I have 15 meters of SIPa 4/16 left, but from the post to the house 40 meters, and the change house from the post is 7 meters in the same direction as the house, I think to buy 25 meters of SIPA and how to connect the cable to each other?

And how to make a branch to the cabins in order not to pull first to the cabins and then to the house.

Another question is whether it is possible to extend 4/16 sip in a corrugated iron pipe to a 4-pole RCD? And you need to do the grounding in the summer house and cabins?

The answer to the question:

Hello! If you pull the SIP, then the branch can be made using branch clamps as well as the branch from VLEP to your site. It is important for the self-supporting insulator itself to tension normally, etc. And what kind of machineS in your shield, if you are going to pull 1 cable on both buildings?

You can lay the cable underground in a pipe (quite well), or without a pipe (if you use VBBSHV). You can even lay a normal VVGNG-LS on a cable in the PND or PPR corrugation (those that are not afraid of ultraviolet radiation are black), but in these two cases it is difficult to branch to the cabins.

AND WHY SIP in a metal corrugation (metal hose) to lay? You can, but I don’t understand what you wrote about the RCD? What difference does it make? I hope you own information that the installation of RCDs in the shield does not eliminate the need to install automatic machines and RCDs do not protect wiring from overloads and short circuit?

According to modern requirements (including PUE, Grounding needs to be done both there and there, and according to the TN-C-S system, TT can be used in deliberate justified cases.

ps DON'T CLIMB IN ELECTRICITY ON ROLLERS FROM YOUTUB! And not a box, but an electrical panel.

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