Search found 242 matches
- Fri Jun 19, 2020 9:21 am
- Forum: General Electrical Discussions
- Topic: VSD Cable - why multiple earths?
- Replies: 4
- Views: 6059
Re: VSD Cable - why multiple earths?
And how does this comply for conductors in parallel if they are under 4mm²? As I've said previously, I don't believe that the 4mm² rule applies for conductors within the same multi core. Because of the wording in the clause: "parallel multi-core cables or groups of single-core cables " doesn't inclu...
- Wed Jun 17, 2020 7:40 am
- Forum: Selection and Installation of Wiring Systems
- Topic: Copper tails for aluminium sub mains
- Replies: 5
- Views: 4235
Re: Copper tails for aluminium sub mains
Why are you planning on using such long tails? And from your last comment, are you planning on doing the join underground? Using such long tails, you are going to complicate the voltage drop calculation. Not having the joint accessible, could cause some confusion for others unless the cable run is d...
- Sun Jun 14, 2020 8:07 pm
- Forum: Damp Situations
- Topic: Powerpoint next to shower
- Replies: 6
- Views: 7748
Re: Powerpoint next to shower
As I said above, and Alec explained with string theory, the door or barriers limit the zone.
There's a new diagram in 3000:2018 to illustrate this.
There's a new diagram in 3000:2018 to illustrate this.
- Sat Jun 13, 2020 11:59 pm
- Forum: Damp Situations
- Topic: Powerpoint next to shower
- Replies: 6
- Views: 7748
Re: Powerpoint next to shower
Read the 4th paragraph of 6.2.1
"Barriers, such as screens, doors, curtains and fixed partitions, that provide effective protection against spraying water may be used to limit the extent of a classified zone."
"Barriers, such as screens, doors, curtains and fixed partitions, that provide effective protection against spraying water may be used to limit the extent of a classified zone."
- Tue Jun 02, 2020 10:55 pm
- Forum: Appliances
- Topic: Oven Switch
- Replies: 5
- Views: 5133
Re: Oven Switch
And you get bonus points for calling it a switch, and not an isolator!
- Tue Jun 02, 2020 10:54 pm
- Forum: Appliances
- Topic: Oven Switch
- Replies: 5
- Views: 5133
Re: Oven Switch
Oven - no.
Cooktop with electric elements - yes.
Cooktop with electric elements - yes.
- Tue May 26, 2020 8:54 am
- Forum: Earthing and Bonding
- Topic: Joints in MEC
- Replies: 3
- Views: 2494
Re: Joints in MEC
Joints are fine as long as they are done correctly. I prefer crimp links, but soldering is also acceptable. 3.7.1.11 As Jamie said, the wording is "run in as direct a manner as possible" and the earliest I can find that wording is 2000. But that doesn't prohibit joins of course. There doesn't seem t...
- Sun May 24, 2020 2:17 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Underground wiring systems
- Replies: 7
- Views: 4735
Re: Underground wiring systems
Yes I agree that the normal enclosure and protection should apply. And yes the note is just advising some examples of wiring systems that aren't underground. So as there's no other requirement that directly states that a wiring system external to a building must be underground, or cannot be embedded...
- Sun May 24, 2020 9:50 am
- Forum: Selection and Installation of Wiring Systems
- Topic: Underground wiring systems
- Replies: 7
- Views: 4735
Re: Underground wiring systems
3.9.4.2 does apply in floors as well, so it should apply in concrete regardless of indoors or outdoors, although not specifically written for outdoor with the use of the word "floor" only. Which sort of goes along with my question, that wiring systems in outdoor locations and within a concrete slab,...
- Sat May 23, 2020 11:06 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Underground wiring systems
- Replies: 7
- Views: 4735
Underground wiring systems
I know I've probably asked this before.. but I would be interested in some more opinions. 3.11.2 classification of wiring system. After the clause. NOTE: Underground wiring systems do not include those that are— (i) embedded in a concrete floor, slab or pad; or (ii) laid on the surface of the ground...
- Wed May 20, 2020 8:22 pm
- Forum: Welcome to the NZ's Electrical Forum
- Topic: Increasing Userbase
- Replies: 11
- Views: 13186
Re: Increasing Userbase
Like this maybe? <head> <title>New Zealand's Electrical Forum</title> <meta name="Description" content="A forum where New Zealand's Electrical professionals can discuss anything in the industry to get good sound advice on how to solve electrical problems, help with Electrical legislation and standar...
- Wed May 20, 2020 8:13 pm
- Forum: Distribution, Networks & Metering
- Topic: Two revenue meters fed from one main
- Replies: 12
- Views: 15418
Re: Two revenue meters fed from one main
Thanks Alec. The configuration did't seem to be a surprise to the inspector. One change we did make was removing the control of the water heating from the second installation, as it was switched using a channel in the ripple of the first installation. That seemed to be just too confusing for anyone ...
- Tue May 19, 2020 10:09 pm
- Forum: Selection and Installation of Wiring Systems
- Topic: Identifing Earths as Live Conductors
- Replies: 6
- Views: 3178
Re: Identifing Earths as Live Conductors
Someone will probably come back with precise information about the dates the rules came into effect...
But basically it wasn't disallowed in NZS3000:1997, but it was specifically disallowed in AS/NZS3000:2000
(unless I'm reading the old tomes incorrectly)
But basically it wasn't disallowed in NZS3000:1997, but it was specifically disallowed in AS/NZS3000:2000
(unless I'm reading the old tomes incorrectly)
- Tue May 19, 2020 6:10 pm
- Forum: Inspection
- Topic: Repairs of 'Mains Work' Fittings
- Replies: 7
- Views: 4352
Re: Repairs of 'Mains Work' Fittings
Probably the only valid lesson we can take is that being right is no guarantee of going unpunished. Even being "let off" amounts to a significant punishment due to the stress & costs of defending yourself. How do we fix this? They use investigators who aren't qualified electrical workers, then the ...
- Tue May 19, 2020 5:52 pm
- Forum: Distribution, Networks & Metering
- Topic: Two revenue meters fed from one main
- Replies: 12
- Views: 15418
Re: Two revenue meters fed from one main
What 3.9.8.2 prohibits is things like a 2C or 3C N/S being used to supply multiple installations, eg each installation on a different phase and all sharing the N . Can't even have separate cables sharing a duct. Funny you should mention that one specifically, as I've seen installations exactly like...
- Thu May 14, 2020 11:22 pm
- Forum: Testing & Verification
- Topic: Imported: Earth Fault Loop Impedance Testing - Residential
- Replies: 0
- Views: 9396
Imported: Earth Fault Loop Impedance Testing - Residential
JonnoM Nov 14 2017 23:25 This topic has been covered a few times but I still couldn\'t get a definitive answer. Sorry for the novel but there is no simple way to explain all this. I am a 3rd year apprentice and work for my father who I have also confused on this matter. My confusion is around the re...
- Thu May 14, 2020 12:08 am
- Forum: Protective Devices
- Topic: Do Isolation Switches require being lockable?
- Replies: 5
- Views: 4351
Re: Do Isolation Switches require being lockable?
I'm not sure what you're asking? You've circled the part that says that a switching device must be able to be locked. That paragraph is part of 2.3.2.2.1 A circuit breaker is a switching device and a device for isolation, but not all switching devices are. Some switching devices are just for functio...
- Tue May 12, 2020 9:29 pm
- Forum: Appliances
- Topic: Recessed downlights for domestic use
- Replies: 8
- Views: 4327
Re: Recessed downlights for domestic use
There are GU10 LEDs. They weren't cheap last time I bought some. Probably 3/4 of the price of a whole integrated fitting. Considering that half the time it's the driver that's failed, a homeowner might go out and buy GU10 LEDs, replace them only to have them still not work, or be destroyed by a faul...
- Tue May 12, 2020 9:32 am
- Forum: Standards and Legislation
- Topic: COC / Certificate of Compliance / COV / Certficate of Verification
- Replies: 3
- Views: 3433
Re: COC / Certificate of Compliance / COV / Certficate of Verification
An electrician can do any of the testing required by 3019. There's a problem with some of the EWRB forms, that refer to an Inspector - but those are errors. (ESR 74 "person authorised to certify mains work" <- certify mains work, not "inspect" mains work) The error on the EWRB forms even seems to be...
- Tue May 12, 2020 9:28 am
- Forum: Welcome to the NZ's Electrical Forum
- Topic: Increasing Userbase
- Replies: 11
- Views: 13186
Re: Increasing Userbase
That's a good point. Not sure if Greg has put any MetaTags in the page code...
- Mon May 11, 2020 5:46 pm
- Forum: Standards and Legislation
- Topic: Additions/Alterations
- Replies: 11
- Views: 7733
Re: Additions/Alterations
I agree with Jamie and Pete. The basic principal applies to the existing part - that if it complied at the time it was installed, it doesn't have to comply with the current rules - unless your additions or alterations are making it no longer compliant or unsafe. There are various clauses in 3000 tha...
- Mon May 11, 2020 5:26 pm
- Forum: Standards and Legislation
- Topic: Practising Licencing
- Replies: 1
- Views: 1559
Re: Practising Licencing
Yes.
The competency course and First Aid only needs to be current (within 2 years) at the _date that you apply_ for your license renewal.
The competency course and First Aid only needs to be current (within 2 years) at the _date that you apply_ for your license renewal.
- Mon May 11, 2020 8:43 am
- Forum: Protective Devices
- Topic: RCD protection for added lighting points
- Replies: 6
- Views: 3978
Re: RCD protection for added lighting points
@Jamie - the exception to 2.6.3.4 states that: "The requirements of Clauses 2.6.3.1 and 2.6.3.2 need not apply to the following:" so the "for the purpose of this clause.." in 2.6.3.1 means that the exception 3 in 2.6.3.4 applies to those points as well. So at the moment you can install a light fan u...
- Sat May 09, 2020 11:16 am
- Forum: Earthing and Bonding
- Topic: 5.6.2.2 Bonding of water pipes
- Replies: 3
- Views: 3215
Re: 5.6.2.2 Bonding of water pipes
As you've posted from 5.6.2.2, they don't need bonding unless they are in contact with the ground. And, if the pipe is connected to an earthed hot water cylinder, then it doesn't require any additional bonding. 5.6.2.3 exception. So that applies to the length of copper pipe on the hot side of a cyli...
- Fri May 01, 2020 10:02 pm
- Forum: Appliances
- Topic: Permanently Connected
- Replies: 5
- Views: 3295
Re: Permanently Connected
Maybe need to be more specific Jamie? Let's say it's a ceiling mounted heater. Permanently installed appliance. But plugged in to a socket outlet in the ceiling. No switching in the supply, just a remote control. Does this come under 4.9 which says that it only applies to "permanently connected" roo...
- Fri May 01, 2020 4:06 pm
- Forum: Forum User Guidelines
- Topic: Forum User Guidelines
- Replies: 6
- Views: 23450
Re: Forum User Guidelines
I was just reading your post Alec, and thinking I've never had to log in for a few weeks - I must have selected "remember me". And I went to look at the "logout" button, then I was logged out... Maybe I hit it by mistake.
Not sure if Greg has changed anything though?
Not sure if Greg has changed anything though?
- Fri May 01, 2020 8:47 am
- Forum: Appliances
- Topic: Recessed downlights for domestic use
- Replies: 8
- Views: 4327
Re: Recessed downlights for domestic use
I'll let someone else go into the technicalities ... But this has been corrected with amendment 1 of 3000:2018 AFAIK. But I've noted that some recessed lights marked as IC-4 are also coming with IC-F stickers to put over the label, so they comply with the 3000:2007A2 wording. So it must be backward ...
- Thu Apr 30, 2020 5:54 pm
- Forum: Appliances
- Topic: 4.5.2.3.2 Warning sign for Downlights
- Replies: 6
- Views: 3540
Re: 4.5.2.3.2 Warning sign for Downlights
Once we get to using 3000:2018, the sign will not be required if the lights are IC or IC-4
Also under 3000:2007, the clause is varied by the ESRs, that it doesn't apply to non-domestic installations.
Also under 3000:2007, the clause is varied by the ESRs, that it doesn't apply to non-domestic installations.
- Wed Apr 29, 2020 10:49 pm
- Forum: Testing & Verification
- Topic: Loop impedance test results
- Replies: 7
- Views: 8498
Re: Loop impedance test results
All of the readings you provided are too high for a 20m run of 2.5
You should do some low-ohm resistance tests to find out where the problem is.
You should do some low-ohm resistance tests to find out where the problem is.
- Wed Apr 29, 2020 10:46 pm
- Forum: General Electrical Discussions
- Topic: Signage when working?
- Replies: 4
- Views: 5297
Signage when working?
Does anyone use the ESR 18A signage?
- Mon Apr 27, 2020 6:16 pm
- Forum: Request a new Forum here
- Topic: Request a new Forum here
- Replies: 14
- Views: 46388
Re: Request a new Forrum here
Maybe we should have one for "Employment offered and Work Wanted" or similar. Or both?
Maybe under "off topic" ? Although it's probably very much "on topic" now that people will be going back to work or not.
Maybe under "off topic" ? Although it's probably very much "on topic" now that people will be going back to work or not.
- Mon Apr 27, 2020 2:26 pm
- Forum: Earthing and Bonding
- Topic: Imported: Outdoor pool Problem
- Replies: 0
- Views: 4504
Imported: Outdoor pool Problem
Lin13 Nov 26 2015 12:25 I have a situation where a new pool has been installed with the usual circulating pump and chlorinator system. The submain from the house switchboard is fed into a small sub board in the pool house via an RCD and then to a power point for the chlorinator. The circ. pump then ...
- Sat Apr 25, 2020 2:57 pm
- Forum: Testing & Verification
- Topic: Loop impedance test results
- Replies: 7
- Views: 8498
Re: Loop impedance test results
@electricians
How about providing some additional information about the circuit? What size cable is it? How long is the run? What is the circuit protective device? Mcb? RCD? Rating?
What type of circuit? Lighting? Socket outlets?
How about providing some additional information about the circuit? What size cable is it? How long is the run? What is the circuit protective device? Mcb? RCD? Rating?
What type of circuit? Lighting? Socket outlets?
- Fri Apr 24, 2020 9:11 am
- Forum: Appliances
- Topic: 4.5.2.3.2 Warning sign for Downlights
- Replies: 6
- Views: 3540
Re: 4.5.2.3.2 Warning sign for Downlights
I just print out these and staple in place. I guess you could put it in a plastic sleeve, or laminate it if you're fancy.
- Thu Apr 23, 2020 7:43 pm
- Forum: Request a new Forum here
- Topic: General Forum Discussions
- Replies: 7
- Views: 15708
Re: General Forum Discussions
Sounds reasonable. The quoting does make it somewhat ugly. Especially for general discussions.
- Thu Apr 23, 2020 12:19 pm
- Forum: Announcements
- Topic: New Features
- Replies: 4
- Views: 56541
Re: New Features
I can see the button in some forums but not others. Not this one for example.
https://electricalforum.nz/viewtopic.php?f=5&t=42
But a couple of others I can see it.
https://electricalforum.nz/viewtopic.php?f=5&t=42
But a couple of others I can see it.
- Thu Apr 23, 2020 12:09 pm
- Forum: Announcements
- Topic: New Features
- Replies: 4
- Views: 56541
Re: New Features
I can't see the tick icon? Is it just me?
- Thu Apr 23, 2020 9:37 am
- Forum: Selection and Installation of Wiring Systems
- Topic: Cable Protection 50mm 3.9.4.2 vs 3.9.4.3.2
- Replies: 3
- Views: 2545
Re: Cable Protection 50mm 3.9.4.2 vs 3.9.4.3.2
The section titles: 3.9.4.2 Wiring systems near building surfaces. 3.9.4.3 Wiring systems under wall lining or roofing material Give a clue to the differences Then 3.9.4.3.1 has a better explanation, preempting 3.9.4.3.2 I think the key part of the wording is "through any space.." Like acoustic wall...
- Thu Apr 23, 2020 9:27 am
- Forum: Request a new Forum here
- Topic: General Forum Discussions
- Replies: 7
- Views: 15708
Re: General Forum Discussions
Now we have the "thanks" button, we also need a LOL button
- Thu Apr 23, 2020 9:23 am
- Forum: Appliances
- Topic: Imported: bathroom heaters, isolating switch. (4.9)
- Replies: 0
- Views: 4544
Imported: bathroom heaters, isolating switch. (4.9)
This is an interesting one that people often misinterpret. ----------------------------------- rarrar Sep 01 2015 14:24 what\'s the correct way to install a golair pull cord heater, does it require an isolating switch or not? pluto Sep 01 2015 14:42 The heater pull switch is only classified as a "co...
- Wed Apr 22, 2020 6:11 pm
- Forum: Welcome to the NZ's Electrical Forum
- Topic: Searching from the OLD Electrical Forum
- Replies: 3
- Views: 5297
- Wed Apr 22, 2020 10:57 am
- Forum: Off Topic/General Electrical Discussions
- Topic: Design a favicon
- Replies: 1
- Views: 3853
Re: Design a favicon
I'm not an expert, but I think it needs to be suitable to be usable mainly at these sizes to be used on multiple platforms.
16x16, 32x32, 48x48
Some information here
https://www.favicon-generator.org/
16x16, 32x32, 48x48
Some information here
https://www.favicon-generator.org/
- Wed Apr 22, 2020 9:48 am
- Forum: Switchboards
- Topic: Number of Main Switches
- Replies: 22
- Views: 61337
Re: Number of Main Switches
Once you provided the actual arrangement, it is simple for any electrician to tell you the answer. The first switch in the metering enclosure is not the main switch for the installation. It is a metering isolator, or main isolator - or whatever the locals wherever you live want to call it. It should...
- Wed Apr 22, 2020 12:17 am
- Forum: Switchboards
- Topic: Circuit Identification
- Replies: 20
- Views: 13245
Re: Circuit Identification
"for the line side feed to RCDs or RCBOs, the clause doesn't apply." I don't think that's true. I can see nothing that exempts these connections from being required to be identified. I think it might be a matter of the writers not using consistent wording in various clauses? (Working from 2007A2 cl...
- Tue Apr 21, 2020 11:35 pm
- Forum: Appliances
- Topic: Imported: Free standing oven and hob install
- Replies: 4
- Views: 4368
Re: Imported: Free standing oven and hob install
There's a few new features on this forum Alec.
Let's call this one the "foxed" feature
- Tue Apr 21, 2020 11:29 pm
- Forum: Welcome to the NZ's Electrical Forum
- Topic: Avatars
- Replies: 4
- Views: 5270
Re: Avatars
Yours looked like about 1kb
I'll be able to upgrade mine now though thanks
- Tue Apr 21, 2020 9:49 am
- Forum: Switchboards
- Topic: Circuit Identification
- Replies: 20
- Views: 13245
Re: Circuit Identification
Neutral bars usually have numbers on them. You would have to mark the circuit protective device with the associated neutral number. For 3 terminal RCD neutral bars, some type identifying number mark on the RCD and the associated neutral bar. I'm sure you'll be able to think of a compliant way to do ...
- Tue Apr 21, 2020 9:39 am
- Forum: Protective Devices
- Topic: Type S RCD Main Switch
- Replies: 10
- Views: 5137
Re: Type S RCD Main Switch
You have already shown the clause about an RCD as a main switch above.
There is some information about AFDDs in 3000:2018 appendix O
Otherwise, possibly manufacturers information?
I'm pretty sure that the way they operate, won't provide protection if they were used as a main switch.
There is some information about AFDDs in 3000:2018 appendix O
Otherwise, possibly manufacturers information?
I'm pretty sure that the way they operate, won't provide protection if they were used as a main switch.
- Mon Apr 20, 2020 10:13 am
- Forum: Protective Devices
- Topic: Type S RCD Main Switch
- Replies: 10
- Views: 5137
Re: Type S RCD Main Switch
Yes the RCD closer to the load will provide the personal protection, but for things like mains and submains, anything other than a 30mA RCD won't comply as a protection method for the cabling, so mechanical protection would still be required.
- Sun Apr 19, 2020 9:35 pm
- Forum: Protective Devices
- Topic: Type S RCD Main Switch
- Replies: 10
- Views: 5137
Re: Type S RCD Main Switch
Off the top of my head, I think the delay is still within the time requirement for personal protection, but obviously the 100mA doesn't comply.