I have the Electrical Inspector coming in a few weeks time to inspect our off-grid alt power installation. He will apparently provide a COC, but there is also something else called an "ROI" (Record of Inspection). Does someone know what this is?
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Originally posted by MichaelNZ View PostI have the Electrical Inspector coming in a few weeks time to inspect our off-grid alt power installation. He will apparently provide a COC, but there is also something else called an "ROI" (Record of Inspection). Does someone know what this is?
Your electrician is required to provide you with a Certificate of Compliance (COC) within 20 working days of completing the work. A Record of Inspection (ROI) is a form which is required to be completed by the Electrical Inspector, and given to you within 20 working days. Note, the ROI must have a copy of the COC attached to it.
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Originally posted by JonnyB View PostHi MichaelNZ,
Your electrician is required to provide you with a Certificate of Compliance (COC) within 20 working days of completing the work. A Record of Inspection (ROI) is a form which is required to be completed by the Electrical Inspector, and given to you within 20 working days. Note, the ROI must have a copy of the COC attached to it.
It is a DIY install.
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Originally posted by MichaelNZ View PostDoes this mean I have to get an electrician in first?
Homeowners are allowed under an exemption in the Electricity Act to carry out domestic wiring work in the property they own and occupy. There's a very specific list of what you can do under that exemption, but it does include installing circuits, and the requirements are that the work is inspected.
It doesn't include being able to install the PV system, main earthing system, switchboard, as these require a registered Electrician to do. The first two are also something called High Risk work, which requires a further inspection.
The inspector may issue a COC for the "Homeowner exempted work" only once he is satisfied with it.
The electrician needs to certify the work the homeowner can't do (effectively saying they have carried out the work, and that it complies), and the inspector needs to inspect it.
This particular example installation will need to comply with 3 different standards.
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Thanks JonnyB.
It is domestic off grid, solar and with an inverter. The solar array also comes under LV classification as the Voc (Volts open circuit) is over 120VDC.
It is my understanding a non qualified person can do any wiring work, up to and including the switchboard, until it is livened. In practice this makes for an interesting debate due to the fact an off grid system can be readily "unlivened". Either way it has not posed an issue with either of the electrical inspectors I have contacted.Last edited by PTWhatAGreatForum; 14-03-2016, 06:17 PM.
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Originally posted by MichaelNZ View PostThanks JonnyB.
It is domestic off grid, solar and with an inverter. The solar array also comes under LV classification as the Voc (Volts open circuit) is over 120VDC.
It is my understanding a non qualified person can do any wiring work, up to and including the switchboard, until it is livened. In practice this makes for an interesting debate due to the fact an off grid system can be readily "unlivened". Either way it has not posed an issue with either of the electrical inspectors I have contacted.
The other way to do it, is to have been supervised by someone with the appropriate class of licence.
Note, anyone reading considering doing this, I would recommend consulting with the person signing off the work beforehand so they can go through it with you. ECP 51 is old, and the work is required to be verified to the latest wiring rules. This may mean discrepancies between the two.
In any event, if you have someone to inspect and sign off the work for you, then great, hope it all goes well!
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Thanks JonnyB.
It was my understanding... but either way I've done the work now.
I have copies of AS/NZS 3000, 4509 and 5033 and have done my best to work my way through it all including the blah blah blah and the contradictions.
Originally posted by JonnyB View PostNote, anyone reading considering doing this, I would recommend consulting with the person signing off the work beforehand so they can go through it with you. ECP 51 is old, and the work is required to be verified to the latest wiring rules. This may mean discrepancies between the two.Last edited by PTWhatAGreatForum; 14-03-2016, 07:03 PM.
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