What protective grounding system to apply for the new high-voltage line?
Good evening. Recently, in our village, in addition to bare wires on wooden poles, SIPs were carried out on concrete poles. I switched to SIP, three phases. The meter was ordered on a pole, the fourth wire was led into the meter. The switchboard is in my garage, I haven’t installed any RCD yet, now I don’t know how to ground better: for TN-C-S, it seems like you need to separate it in front of the input machine and ground it there; for TT, too, there is no reason - VL is new, SIP and all that. Money for RCD, voltage relay, etc. I’m not sorry, I can also do the grounding, I can’t decide, tell me ...
Good evening! You yourself answered your question “there is no reason for TT,” the PUE also says. You need to do TN-C-S, and split in front of the opening machine. And most likely you will have to re-call people from energy sales to re-seal. It was necessary to provide for this by installing a separation bus initially, and then do the grounding as you see fit.
Make a good ground loop, if you don’t want to “guess and count” then just buy a modular grounding kit, we won’t advertise anyone, now there are several well-known companies on the market that offer quality options.
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