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Dan L

Is a control nigh rate main high risk? ESR say "mains means those fittings forming part of an installation that are used for the supply of electricity to the MEN switchboard of the installation that is closest to the point of supply" Just to be sure this night rate main is connected from night rate ...

Dan L

OK so say that an installation has a capacity of 63amps and its main switch has a rating of 63amps. The capabcity is to be increased to 100amps. Everything apart from the main switch is good for 100 amps capacity. So it will need to get inspected as the settings have changed and it will need to be i...

Dan L

Thanks mate much appreciated

Dan L

Thanks mate some interesting points. Just to check "ESR 1213" is that a typo?

Dan L

The hypothetical scenario is main switch upgrade. 1 phase site being upgrades to 3 phase site on old msb located above 2m. No change just extra phases addec Main switch is not being replaced it's a new 3 phase main switch so should comply with readily accessible / within 2m. This seems to divide ins...

Dan L

Just to clarify about dB not needing a main isolation switch is that true for all dbs apart from DB in outbuilding that also

-has a maximum demand of 100 A or more per phase; and
- is provided with a switchboard.?

Dan L

The first time I seen this temp alarm bells rang for me. Its good to have the information to back this up. Much appreciated.

Dan L

Some follow-up questions If it was a smart meter because under normal operating conditions they are read remotely via 4g no meter reader required. Does that mean it would be OK in this situation? 2 - so in general does a neutral bar always have to be enclosed (tool to access) to be compliant. Thanks...

Dan L

Does the main neutral bar not need to be enclosed as in must need a tool to access it? I feel like iv read this somewhere or maybe it's just because this is normally how sb are set up

Dan L

3.10.1.1.c My understanding of this was if you need to enter an enclosure like a meter box to operate an mcb or fuse or read a meter (non smart meter) then you can not have basic Insulation or exposed live parts like a neutral bar in this enclosure it must be double insulation and neutral bar would ...

Dan L

Thanks everyone for you input much appreciated.

Dan L

I don't no if polarity is a good example to compare the situation with. Polarity is extremely clear that is responsibility of the inspector / person livening I would like to think the inspector would not be held as accountable for a mains cables incorrectly ran in roof or not deep enough in trench a...

Dan L

I was under the impression failed inspections are not uploaded to database or at least do not have to be? Thanks for your feedback. I do something similar I have dug up mains before to find cables at 250mm and found mains run in a non compliant way in roof. Of course i got electrician to fix these t...

Dan L

In regards to esr 70. Is it an inspectors responsibility to go in the roof space and check how the mains have been installed? I am currently going into roofs paces and checking where 16mm tps have been used between meter box and MSB to make sure this mains cables is not run under trusses/with in 50m...

Dan L

I'm quite confident what falls into low, general and high risk But in the 3003 it just sais a few things that made me think there were exceptions to medical. Like when it says if "replace" a complete fitting must comply with new standard. So then I was thinking it must be inspected if its classed as...

Dan L

In regards to 6.3 (3003). and ESR 60 To me reads like if an entire light fitting was replaced it would constitute an alteration. ( as a complete light fitting would not be an accessory or a component (6.3 A and B) There for would have to be treated as a new installation and require inspection. Is th...

Dan L

Thanks team

Dan L

Declared article? The cable is imperial roughly 8mm

Dan L

Thanks mate your a legend. Yeah as I would be the inspector and person connecting I don't feel like being responsible for some old vir cabke to be used as mains.
After all we are trying to get rid of that crap not Instal it.

Thanks mate

Dan L

Also here's a link saying everyone who supplies must comply, so I'm assuming the electrical contractor would be the supplier? Not saying your Incorrect but just giving you the reasons behind why I was thinking that way https://worksafe.govt.nz/topic-and-industry/electricity/appliances-and-fittings/c...

Dan L

Not even reg 80 and appendix a in 3000? Here us some info copy and pasted that i though made sense but it could be wrong "Electrical Contractor Obligations Electrical contractors purchasing and installing electrical equipment should understand their legal obligations and know how to minimise their r...

Dan L

Today on a new install electrician had used a potentially very old unknown cable that was in storage. It's a 3 phase neutral screen. It looks like vir, it's def an imperial size and is tinned copper. I would assume this unknown cable can not be used for a few reasons. 3008 3.3.7 Other cable types Th...

Dan L

Yes please answer my other medical questions. Thanks

Dan L

I just want to know if I need to do earth resistance on non electrical parts for periodic inspection

Dan L

To simplify for routine inspection can I just do the section 9 and no need to do anything else unless I see something that's non compliant with the standards of time of install.

Dan L

Thanks mate

Dan L

3003 SECTION 9 ROUTINE INSPECTION AND TESTING OF CARDIAC-PROTECTED AND BODY-PROTECTED ELECTRICAL AREAS "(a) ensuring that all electrical installation work in the patient area has been carried out in compliance with the appropriate requirements of this Standard, or a previous edition;" Can this simpl...

Dan L

As3003 Questions 1 "The space shown in Figure 2 extending 1500 mm around all possible patient locations in a cardiac-protected electrical area." Does this mean that the patient environment can only be in a cardiac-protected area of can only start from inside but could extend 1500mm to outside the ca...

Dan L

This brings me to my next question. We recently discussed MEN switchboards in same structure and I understand your answer fully But am I correct in saying there is nothing stopping many MEN points in the same structure if they are completely separate installations? An example it's very common to see...

Dan L

Interesting discussion gentlemen, thank for your inputs

Dan L

(c) that has been imported must be issued in accordance with AS/NZS 3001, but only after an assessment for compliance with Part 1 of AS/ NZS 3000. Just to confirm When it says in accordance with 3001 does it just mean Appendix C (c6 and C7) as apposed to the entire installation requirements? And als...

Dan L

I read that definition many times and never picked up on that.

Makes sense though, thanks.

Dan L

Why can there be no overcurrent devices at the metering point on the mains? For example one supply to metering point split into 2 seperate icps and each of the 2 meters with own icp has its own main overcurrent protection before meter (orion requirement meter isolation switch). Or even a larger supp...

Dan L

Is it still OK to have a metering distribution point supplying seperate metered men switchboards. For example a meter box with a neutral stud and mcbs per metered supply to their own men switchboard. Or will this distribution point have to be a main switchboard central supply and all metered supplie...

Dan L

It's not uncommon to see a main switchboard made up of seperate enclosures and bars etc mounted next to each other. (usually old) Can you have an enclosure a meter away or 2 meters away from msb will it still be an extension of main switchboard or will it then have to be a DB. if its supplied from i...

Dan L

Asking this question for a computer iliterate work mate. He would like to know with a UK imported caravan is it OK to leave UK socket outlet for connection of a microwave ( it will only be used for the microwave)? I did have a quick look myself. I may be wrong but assuming the import on arrival will...

Dan L

Asking this question for a computer iliterate work mate. He would like to know with a UK imported caravan is it OK to leave UK socket outlet for connection of a microwave ( it will only be used for the microwave)? I did have a quick look myself. I may be wrong but assuming the import on arrival will...

Dan L

Suppose I was getting confused because it only said label isolator main switch and comply with requirements of isolator not of a main switch and just wanted to be sure

Thanks mate much appreciated

Dan L

To me the wording in 3012 is open to interpretation.

To simplify my question

Does a main switch in a builders temp have to be readily accessible as per main switch requirements or just readily available as per isolating switch requirements?

Dan L

Oh least I'm not going crazy, thanks

Dan L

I posted this recently got an answer but know I can not find?

Dan L

Thanks mate much appreciated

Dan L

5.3.3.2b example if you had a 35mm mains supplying a 63amp switchboard with 63amp mcb ( maximum demand by limitation) Then you can have a 6mm main earth conductor instead of 10mm And same in other situations we're the actual conductor of the mains is larger due to voltage drop, than You can find the...

Dan L

My current opinion = 4.4.2.2.d would suggest it's OK to have a power point behind a fixed appliance or in a location that's not readily accessible as long as its soley for that appliance 4.4.2.1 also uses the words "any plug intended to be used" Which suggests to me if the socket is for general use ...

Dan L

Surely the mains is the cables from the network connection point to the main switchboard, any alteration to this cable must be Inspected. If this service mains is going to be extended it is directly effecting the settings of the VD/EFLI etc it was originally inspected to and must inspected again. If...

Dan L

I didn't mean the builders temp rule could be used for other situations but maybe there were other standards with exceptions relating to other environments.

But thanks for your time you have examined thingd very clearly.

Dan L

Thanks mate I will. Much appreciated

Dan L

I thought possibly in some situations there may be some standards that will over rule this that I'm not aware off. Like a builders temp for example the switchboard shall have the facilitie to be locked so it is not readily accessible or compliant with the exception mentioned. 3012 2 3.2.1 (e) Where ...

Dan L

Thanks guys, I am a New inspector and want to make sure I am doing things the correct way. I really appreciate all your feed back.

Dan L

I was more thinking in that situation as the length from earth bar to ground was short that the earth bar connection would also be the test point as such but yes in that case the test would be omitted. What you say makes sense. So if it is one 25mm cable from earth bar to ground then the above groun...

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