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PeteRig

Thank you Alec, useful comments

PeteRig

Hi All Had an issue today on a new construction site of a large Retirement Village where the Building Inspector was quoting to our guys on site, the earthing requirements of AS/NZS 3000:2018 in regard to framing, in particular section 5.4.6, and what we should be earthing etc. His comment was that h...

PeteRig

One way Jamie is the definitions in AS/NZS 3000, your thoughts?

PeteRig

Not sure if this is funny, but when I read Alec's recent post under metal bench tops and he mentioned earthing gang nails, that brought back a memory for me when I was a newly registered electrician in the very early 80's or late 70's whenever gang nails were introduced into the building system. In ...

PeteRig

A very good conclusion Alec and explanation, well done as always

PeteRig

Also Marley conduit comes in 4m lengths, up to 50mm dia, above ground is HD and UV resistant, below ground HD but not UV Ducting comes in 6m rigid or continuous, rigid sizes 32mm to 150mm HD, only the white ducting is UV protected,continuous ducting 20mm to 160mm dia. Also the conduit fittings dont ...

PeteRig

Also ECP1 clause 3.3.1 mentions that the fitting closest to the appliance inlet where the link can be (if no swb) must be labelled appropriately.

PeteRig

Interesting article in this months ElectroLink regarding a prosecution of an Electrical Inspector issuing a WoEF for a caravan for failing to pick up the wrong type of RCD was fitted. EWRB prosecuted him saying issuing a WoEF falls under the definition of PEW,therefore they can prosecute him. Appear...

PeteRig

Cheers Jamie, 3004 has a CoV hence my question, I assume the same thing but different name

PeteRig

Stupid question, is there a Periodic Assessment Form for Marina's?

PeteRig

Ok, thanks Alec

PeteRig

I have a situation where a PV inverter's label has ratings less than the PV panel ratings: The short circuit current rating (Isc) and the Max power current (Imp)of the PV panel is higher than the Inverter ratings. The inverter engineer's have said that the inverter will be find for these currents ev...

PeteRig

The inverter should have MPPT fusing for the DC side

PeteRig

In AS/NZS 3012 section 2.9 makes reference to Transportable Structures, 2.9(C) has requirements regarding socket outlets installed inside a transportable structure. Only mentions socket outlets not hard wired appliances.
AS/NZS 3012:2010 is not cited by ESR.

PeteRig

Thanks Alec, as I mentioned above though, makes it hard to know if things have been certified eg 40 years, so where would that leave a homeowner if for example a new purchaser picked up that there was illegal or non compliant work done at some period, is the seller liable, a good lawyer may say he i...

PeteRig

Hi Alec, do you mean Reg 82 in the ACT not ESR 82?

PeteRig

So are you saying that if you sell a house that is 40 years for example the seller needs to prove it is safe to sell and been tested and certified to the regs?

PeteRig

Surely this regulation doesn't apply to selling a house/building?

PeteRig

Hi Jamie, you are correct but in practice the installs I have inspected the installers use a 6mm earth wire as its cheaper than 4mm generally and take it from the switchboard and connected to the inverter in the same crimp lug then to the frame of the array. The earth wire is normally installed in t...

PeteRig

What are others thoughts in following AS/NZS 5139:2019- Electrical Installations-Safety of battery systems for use with power conversion equipment.
I know this standard is not cited but it appears to be the most up to date information regarding battery systems to follow as a guideline.

PeteRig

Thanks Alec, great answer as usual!

PeteRig

Hi guys, does a transportable construction shed on a construction site connected by an appliance inlet required a WoEF as per AS/NZS 3001 appendix C, I believe so? When reading AS/NZS 3012, clause 2.9 says the transportable structure must comply with AS/NZS 3001 and 3.4.1 in AS/NZS 3012 the initial ...

PeteRig

Makes sense Alec, thanks

PeteRig

If testing for "verification of impedance" 8.3.9 though, dont we have to follow 8.3.9.2 for socket outlets not protected by RCD's? 8.3.9.2 says "deemed to be safe if" (a) Rphe doesn't exceed the value in Table 8.2 when no power available. 8.3.9.3 (a) says we may use an ohm meter to do the tests, the...

PeteRig

Try AS/NZS 5033:2012 clause 4.3.1 (b) could be what you are looking for?

PeteRig

Thanks Alec and Doug, appreciated

PeteRig

Thanks Doug, so two houses in a street could share the same earth electrode technically?

PeteRig

Hi guys Have 216 apartments (spread over two story blocks) in a very tight area, any issue if 2 dwellings share the same earth electrode enclosure (each unit has its own earth stake), each apartment is only 4m wide so would end up with 216 enclosures otherwise. The design is that each dwelling has i...

PeteRig

Cheers Alec The story goes on! Have found out this company has 30 of these portacoms in NZ, they come from Auckland, not sure if imported but as mentioned already, do have Chinese RCBO's. So they may be made in Alk, hence the E registration on the WoEF, if this is the case then they never complied w...

PeteRig

Hi all,this got me thinking more about this, maybe this portacom came from Australia ( as the com[any is in NZ and Australia), this would explain the type AC RCBO's but not why the swb is located where it is, if it was constructed in Aussie it would still need to comply with AS/NZS3000 and 3001. Doe...

PeteRig

Awesome Alec, just what I was waiting on to confirm, I have searched the E reg and I have the electricians details and photo of the WoEF, even the WoEF doesn't look like it meets the requirements of AS/NZS 3001. I will explain to the client & electrician the findings, the electrician may want to mov...

PeteRig

Thanks Greg, the more I look at this the more I get concerned, what about the swb at 2.3m above the floor, AS/NZS3000 says no I beleive, AS/NZS 3001 appendix C doesn't mention swb locations. Am I getting concerned about something I shouldn't be? Should I just inspect what I need to and not worry abo...

PeteRig

Hi guys, after some advice please. I have been asked to inspect a PV install in a Portacom , the PV array is remote to the Portacom, so that the portacom can be transported to remote locations off grid and the PV batteries provide power, to keep the batteries charged a portable generator can also be...

PeteRig

Interesting Alec, you never stop learning in this industry!

PeteRig

Great discussion guys!
I was an early 70's apprentice an cant remember getting taught any of this, i hope the apprentices of today appreciate the information available and knowledge out there, that they can learn from, from what I have observed though a lot of them dont.

PeteRig

Interesting guys, so are we saying that rondo battens are part of the building framing, as there is another post on this forum under earthing and bonding that is is suggested it is possibly part of the mounting system?
It would be nice to clarify what rondo battens are classified as possibly?

PeteRig

Yes you can, Tri-Cab cables make a variety of cables in 1c and multicore, still need to follow AS/NZS 3000 guidelines. One thing to watch is when terminating lugs/links that there is a technique to follow, don’t remove all the insulation for the lug in one go, otherwise the fine strands of conductor...

PeteRig

You can use shearhead bi-metal connector links from Electrical Connections, I use the ECZS type which has double shear bolts at each end of the connector. The tails I use are copper flexibles, generally you can go down one size (or more) for the copper cables eg 70mm Cu (depends on current/load etc)...

PeteRig

Thanks Alec

PeteRig

There is a statement in the April 2019 EV WorkSafe guideline that I don’t understand. Page 8, “All RCds should” (a) ___________ ??? . I understand what (b) is saying.

Any thoughts?

PeteRig

Just a general statement for those interested

PeteRig

Hi there Worksafe amendment (issued Oct 2019) to the Safety Guidelines under "Principles of safety for EV charging" state: "Where an EVSE is installed at a residential installation, the charging final subcircuit shall be protected by a type B RCD and the subcircuit shall originate from a MEN switchb...

PeteRig

Our guys install a Prysmian OptiCat5E cable in the domestic new builds, the Telco network is phasing out incoming copper so eventually it will be all fibre

PeteRig

Hi guys, as already mentioned by others, in EWR 1976 reg 62 didn't say you could not do it, hence why the earth conductor was used in the straps in a 2 way circuit in years to follow when 1.0mm was made with an earth conductor.
Tried to insert the reg into this reply but couldn't (user error)

PeteRig

Yeah still a requirement, electrical theory doesn't change, as Jamie has pointed out covered in section 3.9.10.
Slotting metal or fitting AL plates "Stops eddy and his mates"
AL plates make it easy to drill out for the cable glands, remove the plate from the board and no mess inside the board!

PeteRig

I agree with Jamie, my thoughts are the extended part of the installation must comply with the current rules, for example if you extend a power outlet circuit wired in the 60's, the earth conductors of the time were uninsulated. So if you extend this circuit I dont think you would sleeve the earth c...

PeteRig

Thanks Alec, I thought that was the case

PeteRig

Can you have two separate supplies eg (160A) into one building with a Main switchboard at either end of the building for each supply, the installation wiring would be kept separate?

PeteRig

I believe this forum will flourish and continue to be a useful tool to all those in the industry! I followed the old site for many years (even though i didn't contribute) what I got out of it (and passed on to others) was so satisfying, this site will be the same for sure! Like all forums you get va...

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