OP
chrisses
Yes oh dear I have dealt with the issue accordinglyOh dear!, so instead of investigating this issue (above 50V touch ?), the installation was put into service with a possible inherent defect.
Discuss Voltage up to 100v on CPC even when disconnected in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
Yes oh dear I have dealt with the issue accordinglyOh dear!, so instead of investigating this issue (above 50V touch ?), the installation was put into service with a possible inherent defect.
so, the stray voltage must be coming from that MCB. dis all that circuit's cables from CU. do continuity and then IR tests on that circuit with all loads disconnected. bet you the IR tests will show a L-E fault on that circuit.
Oh and to clarify as well when I switch off the breaker to this circuit only the earth voltage disappears
so, the stray voltage must be coming from that MCB. dis all that circuit's cables from CU. do continuity and then IR tests on that circuit with all loads disconnected. bet you the IR tests will show a L-E fault on that circuit.
not if the fault is transmitting through a load to N and then onto the earth via the TNC-S.
I would be more concerned about how the Earth is rising above 50V, and why the ELI test could not be performed first and foremost, then try to find the other fault.
Something doesn't add up here, I would be inclined to start re-testing from the beginning.
TN what though ? TN-S or TNC-S...
I then disconnect all the cpc's from each other at each switch (fed at switches not 3 plate) I still have voltage on the earth on the incoming and outgoing feed even though they are disconnected from each other
TNC-S sorry forgot to answer thatI may have missed it, but have we got an answer to this?
TNC-S sorry forgot to answer that
I cracked it
guy who said he'd done r1 + r2 obviously hadn't
I cracked it
the problem was actually quite simple in the end, the solution was a bit tougher though
i approached it as a new installation and tested the whole lot, turns out the guy who said he'd done r1 + r2 obviously hadn't
there was a break in the earth somewhere in the circuit leaving most of the lighting circuit unearthed!
with no earth the cpc was getting endured current from the live
couldn't find the break in the earth but managed to refeed the circuit from the board!
thanks to everyone for the helpful advice I'll try and return the favour in the future
Reply to Voltage up to 100v on CPC even when disconnected in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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