Discuss Three Phase overhead supply is it TN C in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
While carrying out a EICR I found on first inspection that there were no RCDs installed . When I checked at the Pole Mounted Transformer the Earth & Neutral were connected at the Neutral point. So am I right in concluding it's a TN-C System? The 17th Edition states that RCDs should not be installed where a TN C System is used (411.4.4)
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