Is it possible to separate the PEN conductor in the switchboard on a pole?
Hello! Tell me, is it possible in the switchboard on the pole on which the grounding tn-c-s connect four core cable to the input to the house and share the pen there? The fact is that the cable was purchased in armor 4x16 square aluminum, and in the house I want tn-c-s, and not TT.
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Hello! It is possible, but only on condition that the PEN conductor to the separation point is unbreakable, does not have switching devices. The PEN conductor is recommended to be separated before the meter.
The condition of the supply line is also very important. If the line is in unsatisfactory technical condition and does not meet the requirements for TN-C-S lines, then the operation of such a grounding will be unsafe, in which case it is better to give preference to the TT system.