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Posted By Topic: Christchurch Sparky's

Oct 07 2017 11:33

Hi guys. Question for you Christchurch based sparky's. My daughter is building a new house in Rolleston and asked me to do the electrics. I shot down this weekend from Auckland to do the BTS and had a look at other new builds there. They all have outside meter boxes rather than a combo db inside. Is there any particular reason for this?

Oct 08 2017 12:44

Most likely the local network will not accept the internal meter location due to concerns over access later on, which is a requirement of section 10 of the EIPC code.

Not to much of a concern for bussiness locations but a real problem for domestic installations.

Those areas that are installing meters inside houses will have to work it out later when the customers says "sure you can have access I will be home at 1730" when they want to audit the metering installation, or conduct a manual reading.


Oct 08 2017 13:15

I live in Chch but never really thought about this. I don't remember ever seeing a meter inside a house I've looked through, even for old houses.


Oct 09 2017 09:28

Until 1993 each network area was a semi-autonomous "Electrical supoly Authority"; and while they were all supposed to apply the national Regulations equally they tended to have local interpretations and practices - something that we are still "suffering" from today.
For metering, which wasn't covered by Regs, that went double. From around the 1970s, many ESAs required outdoor metering, even to the extent of requiring domestic internal meters to be moved to external meterboxes if mains were upgraded or switchboard replaced. Some still do. Others have relaxed after all meters are no longer the network's problem. Instead they are the retailers' problem - and increasingly the retailers' metering service providers. In today's environment, the extra costs of access will simply be passed on to consumers one way or another.

So now we have up to three sets of "rules" that apply.
Firtstly ESRs + "3000", because these days the metering IS part oof the installation and must comply as such.
Secondly we have rules imposed by the network. These should be available in writing, and some can be downloaded from network website.
Thirdly there are rules imposed by retailers. These apply mostly to initial set-up; after that the worst you'll be hit with is a physical change of meter if you change retailers (they're generally more interested in getting customers than applying rules).

Oct 09 2017 15:40

I think internal meter boxes, particularly combined meter/distribution-board boxes , are the greatest things since sliced bread.
In the past, tin meter boxes have been installed in all sorts of holes in walls with a smear of silicone to seal the gaps. This was a common source of leaks.
The building code now requires proper flashings and quite rightly so, but they are a pain to install.
Internal boxes with smart meters can be installed in garages or basements; no need for special apertures in cladding and arguments with builders or building inspectors.

Oct 09 2017 16:20

No requirement in Chch to have indoor or outdoor meters. The only differing rule is that Orion want circuit protection before the meter.