Testing after switchboard upgrade
Posted: Thu Jan 21, 2021 9:43 pm
Hey guys,
Sorry for the long intro to the question.
I upgraded a domestic switchboard recently, including adding RCD protection to power and lighting circuits. During the upgrade I carried an IR test on each sub circuit, with one power circuit giving a failed 0Mohm result. I suspected that an appliance was plugged in, however at this time, after an extensive and time consuming search with the homeowner, nothing was found. I momentarily livened the circuit and the RCD did not trip, further indicating an appliance. The home owner then remembered an old pump being plugged into a socket under the house which had been boarded over and this turned out to be the cause of the low reading.
This got me thinking, am I responsible for the sub circuits when re-livening them after an upgrade? The homeowner may never have remembered that pump and it may have taken hours to find it.
My understanding is that we are only responsible for the work we complete, which in my case was only the protective devices however does this apply to existing work downstream?
Thanks.
Sorry for the long intro to the question.
I upgraded a domestic switchboard recently, including adding RCD protection to power and lighting circuits. During the upgrade I carried an IR test on each sub circuit, with one power circuit giving a failed 0Mohm result. I suspected that an appliance was plugged in, however at this time, after an extensive and time consuming search with the homeowner, nothing was found. I momentarily livened the circuit and the RCD did not trip, further indicating an appliance. The home owner then remembered an old pump being plugged into a socket under the house which had been boarded over and this turned out to be the cause of the low reading.
This got me thinking, am I responsible for the sub circuits when re-livening them after an upgrade? The homeowner may never have remembered that pump and it may have taken hours to find it.
My understanding is that we are only responsible for the work we complete, which in my case was only the protective devices however does this apply to existing work downstream?
Thanks.