Selection and Installation of Wiring Systems

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New Features

Last post by gregmcc « Thu Apr 23, 2020 12:23 pm
Posted in Announcements
Replies: 4
by gregmcc » Thu Apr 23, 2020 11:50 am » in Announcements

Hi everybody,
Just thought it was time for an update. We have over 160 members which is very good. Thank you for your support!

A few new features...

4 Replies

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Last post by gregmcc
Thu Apr 23, 2020 12:23 pm

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Conduit vs Flexible conduit

Last post by AlecK « Tue Jun 25, 2024 9:49 am
Replies: 3
by Chaz » Fri Jun 21, 2024 3:00 pm
Rating: 11.11%

Hi all, basic question.

Cat A wiring system, heavy duty insulating conduit , can heavy duty flex conduit be used?

I see there a few standards...

3 Replies

10853 Views

Last post by AlecK
Tue Jun 25, 2024 9:49 am
Alterations to cables with green sheathed or bare earths

Last post by AlecK « Tue Mar 05, 2024 10:44 am
Replies: 6
by JamieP » Sun Dec 12, 2021 9:38 am
Rating: 33.33%

Is my thinking correct that there is no complaint way to make alterations and move or reroute such cables?

Obviously the parts already in service...

6 Replies

21004 Views

Last post by AlecK
Tue Mar 05, 2024 10:44 am
Wiring Systems installed on Ground

Last post by AlecK « Thu Feb 22, 2024 10:42 am
Replies: 3
by Slovett » Wed Feb 21, 2024 11:34 am

I have a question about Wiring Systems installed on the ground (Grass Field) for temporary relocation purposes.

I have a job coming up that requires...

3 Replies

12478 Views

Last post by AlecK
Thu Feb 22, 2024 10:42 am
N pin on socket used for other means

Last post by MikeNZ « Tue Oct 17, 2023 9:01 pm
Replies: 3
by JamieP » Sun Oct 01, 2023 10:49 am

I have a site that has motors controlled via VFD.

The motors are run in suitable VFD cable.

The client wants the motors to connect via plug and...

3 Replies

13202 Views

Last post by MikeNZ
Tue Oct 17, 2023 9:01 pm
Once a PEN is separated can it be combined again in one installation

Last post by AlecK « Sat Aug 12, 2023 10:00 am
Replies: 8
by Dan L » Tue Aug 08, 2023 10:21 am
Rating: 44.44%

After a conversation about if its compliant to have a sub db board (no MEN with own PE) supplying a sub MEN board, a reason given from master...

8 Replies

22007 Views

Last post by AlecK
Sat Aug 12, 2023 10:00 am
Domestic wiring rated for insulation

Last post by DougP « Thu Aug 10, 2023 9:16 am
Replies: 5
by Dan L » Mon Jul 31, 2023 11:17 pm

3.4.1

In New Zealand only, wiring systems in domestic installations shall be
installed on the assumption that thermal insulation in ceilings,...

5 Replies

16812 Views

Last post by DougP
Thu Aug 10, 2023 9:16 am
Duct vs Conduit

Last post by AlecK « Mon Jul 10, 2023 1:44 pm
Replies: 6
by ShaneR » Tue Jul 04, 2023 11:56 am
Rating: 22.22%

Hi all

Can Conduit wire be installed in Square lid Clip on Duct without additional protection (TPS vs single insulation)?

Just wondering if Square...

6 Replies

17131 Views

Last post by AlecK
Mon Jul 10, 2023 1:44 pm
Sub-main to domestic shed: Minimum size?

Last post by DougP « Wed May 17, 2023 10:30 am
Replies: 2
by Mazdaman » Tue May 16, 2023 9:43 pm
Rating: 22.22%

A small shed on a carport requires power for 1 power point and 3 lights. I don't know if the owner prefers overhead or underground cable route yet...

2 Replies

11642 Views

Last post by DougP
Wed May 17, 2023 10:30 am
Earthing of aluminum ladder

Last post by AlecK « Thu Mar 30, 2023 10:03 am
Replies: 6
by JamieP » Sun Jan 22, 2023 4:40 pm

Firstly, lets leave the debate around whether or not earthing is not require as I can't be bothered going in depth of the situation

My question is,...

6 Replies

23586 Views

Last post by AlecK
Thu Mar 30, 2023 10:03 am
Lifeguard units - do they need RCD protection on supply?

Last post by JamieP « Sun Dec 18, 2022 1:17 pm
Replies: 10
by JamieP » Wed Dec 14, 2022 8:23 pm
Rating: 11.11%

I need to install a socket outlet for a Lifeguard unit supplied via 32A lead. Similar to this

Do these units count as PSOAs?

I was going to apply...

10 Replies

28969 Views

Last post by JamieP
Sun Dec 18, 2022 1:17 pm
Fixed space heating max demand

Last post by AlecK « Fri Nov 11, 2022 12:03 pm
Replies: 1
by sulli_21 » Fri Nov 11, 2022 10:53 am

I have a new build where the customer has chosen 13 infrared ceiling mount heaters for their heat source. The heaters vary in size from 350-900w and...

1 Replies

10288 Views

Last post by AlecK
Fri Nov 11, 2022 12:03 pm
3.11 Underground Wiring Systems - Ducts

Last post by AlecK « Wed Nov 02, 2022 12:37 pm
Replies: 3
by JamieP » Mon Oct 31, 2022 8:11 pm

Does the term conduit/conduits include underground cable ducts?

I often hear people referencing ducts as different installation rules and they are...

3 Replies

14819 Views

Last post by AlecK
Wed Nov 02, 2022 12:37 pm
What defines something as telecommunications?

Last post by AlecK « Fri Oct 28, 2022 10:25 am
Replies: 3
by JamieP » Tue Oct 25, 2022 6:47 pm

Just curious what defines telecommunications in regards to segregation.

I've seen a definition in the TCF guilines as:

Telecommunication is the...

3 Replies

15165 Views

Last post by AlecK
Fri Oct 28, 2022 10:25 am
Fibre segregation

Last post by AlecK « Wed Oct 26, 2022 1:32 pm
Replies: 1
by JamieP » Tue Oct 25, 2022 6:49 pm

Does fibre need to be segregated? I understand it's glass and doesn't pose the same risks but in terms of 3000 does it still need to follow the same...

1 Replies

10646 Views

Last post by AlecK
Wed Oct 26, 2022 1:32 pm
ECP34 vs 3000

Last post by TPower « Wed Sep 21, 2022 3:12 pm
Replies: 2
by TPower » Tue Sep 20, 2022 9:01 pm
Rating: 22.22%

Does ECP34 override clause 3.12 in 3000 when it comes to clearance distances for electric lines in installations?

ESR17 indicates work on or near an...

2 Replies

12698 Views

Last post by TPower
Wed Sep 21, 2022 3:12 pm
Replacing 10A with 15A socket

Last post by AlecK « Wed Sep 14, 2022 10:20 am
Replies: 2
by Chewbucca428 » Tue Sep 13, 2022 9:33 pm

Hi there, my last post just disappeared so i'll summarise. can I replace a 10a double socket with a 15a double socket in a residential property? I've...

2 Replies

15559 Views

Last post by AlecK
Wed Sep 14, 2022 10:20 am
Segregation and interference

Last post by AlecK « Wed Aug 24, 2022 12:34 pm
Replies: 7
by JamieP » Sun Jul 26, 2020 8:25 pm

I've been looking at at segregation requirements due to working a lot with instrument and instrumentation systems

At first I looked at the...

7 Replies

24220 Views

Last post by AlecK
Wed Aug 24, 2022 12:34 pm
Can any underground system be made a Cat C system?

Last post by AlecK « Mon Aug 15, 2022 10:21 am
Replies: 1
by JamieP » Sat Aug 13, 2022 4:53 pm
Rating: 11.11%

Can any underground system be made a Cat C system? Or only those specified in Table 3.5?

1 Replies

10489 Views

Last post by AlecK
Mon Aug 15, 2022 10:21 am
Medium duty conduit underground Table 3.5

Last post by AlecK « Mon Aug 15, 2022 10:00 am
Replies: 1
by JamieP » Sat Aug 13, 2022 3:46 pm
Rating: 11.11%

Can medium duty conduit be run underground (without the concrete encasing that makes it a Cat A system) as a Cat B system?

I can only see an option...

1 Replies

10706 Views

Last post by AlecK
Mon Aug 15, 2022 10:00 am
Installation of cable with green earth

Last post by JamieP « Thu Aug 11, 2022 6:04 pm
Replies: 4
by JamieP » Tue Aug 09, 2022 12:02 pm
Rating: 22.22%

Customer has supplied old cable to use that is in good condition except that it has a plain green earth.

Can I use this is I sleeve or shrink the...

4 Replies

16159 Views

Last post by JamieP
Thu Aug 11, 2022 6:04 pm
Unaccessible joints within ceiling space.

Last post by AlecK « Wed Aug 10, 2022 9:58 am
Replies: 1
by Bilby42 » Wed Aug 10, 2022 7:42 am
Rating: 22.22%

While I always avoid joints in TPS cable runs, I have a situation where extending an existing cable with a joint is unavoidable without major...

1 Replies

10533 Views

Last post by AlecK
Wed Aug 10, 2022 9:58 am
How to calculate how much volt drop % is already used?

Last post by AlecK « Tue Aug 09, 2022 9:55 am
Replies: 5
by JamieP » Wed Nov 10, 2021 7:30 pm

Is there any good suggestions or easy ways on how you choose to work out what % of VD from the PoS to the point you install from is?

For example,...

5 Replies

17967 Views

Last post by AlecK
Tue Aug 09, 2022 9:55 am
Max Demand for Connectable Installations

Last post by JamieP « Sat Aug 06, 2022 8:07 pm
Replies: 4
by JamieP » Mon Aug 01, 2022 4:09 pm

I am doing max demand calculations for a shed and there is to be a 16A socket outlet set up in accordance with 3001 but I'm just wondering what value...

4 Replies

15828 Views

Last post by JamieP
Sat Aug 06, 2022 8:07 pm
Calculating 3ph voltage drop.

Last post by AlecK « Mon Jun 27, 2022 10:17 am
Replies: 1
by DougP » Sun Jun 26, 2022 5:41 pm

Calculating voltage drop for a 3ph installation or submain.
The tables in 3008 are for 3ph, and there's a conversion for single phase.
No problem...

1 Replies

11276 Views

Last post by AlecK
Mon Jun 27, 2022 10:17 am
Black as an active? Table 3.4

Last post by JamieP « Fri Jun 03, 2022 2:00 pm
Replies: 2
by JamieP » Thu Jun 02, 2022 7:34 pm
Rating: 11.11%

I understand European colours are discussed in 3000 and it's common to have a black as L2 but is the use of European multiphase non-compliant as...

2 Replies

12220 Views

Last post by JamieP
Fri Jun 03, 2022 2:00 pm

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