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Posted By Topic: New house ROI

Mar 05 2019 19:02

House built at a yard & transported at some later stage to site.
House wired & completed except mains wired between meterbox & switchboard only, no main earth installed.
Draw wires for main earth conductor & mains to meterbox. COC provided for PEW done.
Final mains work to be completed by a different electrician once house at site.
Could someone please confirm whether or not an ROI is required to be obtained by the initial electrician for his part of the mains work?
Wouldn't that be the responsibility of the person carrying out the final connection once the house is located at a site & remainder of mains completed with another COC & an ESC?

Mar 05 2019 19:32

I'd think that the inspector who livens the installation would need to see both cocs, I cant see why it would need an inspection for the initial work

Mar 05 2019 22:18

Yes, person completing ESC would need to sight both COC's. Tend to agree that ROI not required until connection. Have received varying opinions from others about ROI for initial work, including inspectors. Appears that Council won't issue CCC without one. Will probably need to obtain a ROI just to satisfy them.

Mar 06 2019 08:48

Both sections of mains are "mains work"; as is the installation of the main earthing system.
Therefore both parts of the mains must be inspected.
Doesn't have to be 2 separate inspections; but could be.

The legal requirement is simple: high risk PEW must be inspected. ESRs don't say whose responsibility that is; though the obvious inference is that whoever did the high risk PEW should ensure that it gets inspected.

However apart from the legal requirement there's also a commercial reality. The 2nd sparky (or his employer) will arrange an inspector to have their high risk PEW inspected. They'll pay for that service (which is essentially a specialised subcontract). But why would they pay to have the 1st spary's work inspected? And why would the 1st sparky not have bothered to have his work inspected?

Bottom line is ESR 73A requires the person about to connect to undertake a number of pre-connection checks; including ensuring that there are enough CoCs and RoIs to cover ALL the work that is about to be connected.

But it is NOT the function of the person connecting to get the high risk work inspected. Their job is simply to ensure that it has been. They can inspect it themselves (assuming they hold an "Inspector" PL); but who is going to pay for that?

Unless each person who does high risk work arranges inspection of what they do; the system falls over and delays result come connection time.

To answer the OP questions:
yes; the internal mains must be inspected. This should be arranged by the person who did the work; but there's no legal obligation forcing that.
No; the person who does the external mains is NOT responsible for having work done by others inspected.
And No; the person connecting has NO responsibility for getting work inspected. Their job is just to "sight" the RoIs; and if the RoIs aren't ready, they are likely to walk away.

Onj the final matter of the building act CCC issued by TLA; the bit of paper thay need is not CoC or RoI. It's the ESC (that's in ESR74A). Unfortunately most of them don't seem to understand this simple fact. Bearing in mind that the ESC only counts towards CCC for clause G9 Electricity of the Building Code; it doesn't count for other clauses that may have an electrical aspect.


Mar 06 2019 10:51

In practice, it would be silly to get an inspection when the mains work isn't completed. You have the COC for the first part of the mains work, and presumably that has the high risk details on it as well.

Just get one inspection once it's ready for connection.

Mar 06 2019 16:03

In practice, as an Inspector, I find the problem is getting the CoC for the original lot of "mains work". Making it difficult for me to "attach" both CoCs to my RoI.
And I also find that the 2nd sparky only wants to pay for having his part(s) of the high risk PEW inspected. Doesn't care if I inspect the other part, but won't pay any extra.
Generally that's the guy who also wants the place metered & connected; and likely to get very upset if there's a hold-up caused by the first sparky (eg in one case not having bothered to even issue a CoC!).

And on the other side of the deal, as a sparky I want my high risk PEW inspected now, by someone I choose; not later by some idiot inspector I never heard of and have no reason to have faith in.
Remember the PEW is not complete until inspected - so if i don't get it inspected, i can hardly claim "complete" and charge my customer, can I?.

Mar 06 2019 17:59

Aleck, I presume you meant that the high risk PEW is not complete until inspected (and connected).

Pretty stupid to not issue a COC for the work completed in the yard.
I am fairly sure that the installation would have been tested an livened or a lead to function check switching etc.
The second electrician is allowed to rely on the first guys COC when carrying out his work and issuing his COC and ESC.

Mar 07 2019 08:37

No, not certified-&-connected. Just certified [ESR 65(4)]. Though commercially I agree the customer won't want to pay until operational, in most cases.
And agree it was silly of him to expect 2nd sparky, doing the "externals", to certify his "internal" work - but it happened.

The reliance on CoCs bit is limited to 6 months. I had one where there was longer between original work and on-site work.

And the same applies to person connecting; the CoCs & RoIs they sight have to be less than 6 months old.
Which can create some interesting problems where cables are installed for later use