Protective Devices

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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

257577 Views

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

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45A Overload device

Last post by Satobsat « Sun Mar 09, 2025 7:32 pm
Replies: 6
by Satobsat » Mon Mar 03, 2025 1:07 pm
Rating: 22.22%

I have a requirement to protect a small commercial 2 phase installation from overload via means of limitation.
As there are few options available I...

6 Replies

3157 Views

Last post by Satobsat
Sun Mar 09, 2025 7:32 pm
Schneider RCBO Acti9 iC60H, 1P + Ns

Last post by PeteRig « Fri Apr 05, 2024 1:26 pm
Replies: 2
by PeteRig » Fri Apr 05, 2024 9:26 am
Rating: 11.11%

Hi All, I have reposted my question from yesterday as I believe there was an issue with the site and my post has dropped off.

My question was...

2 Replies

21318 Views

Last post by PeteRig
Fri Apr 05, 2024 1:26 pm
Schneider RCBO What does the yellow label mean?

Last post by Mazdaman « Tue Mar 26, 2024 6:36 pm

by Mazdaman » Tue Mar 26, 2024 6:36 pm

On a Schneider RCBO is a yellow label above the bottom left terminal which states When Line connected to bottom side with a warning triangle.

The...

0 Replies

14539 Views

Last post by Mazdaman
Tue Mar 26, 2024 6:36 pm
Running the Neutral Through a Circuit Breaker

Last post by DougP « Mon Mar 27, 2023 10:43 am
Replies: 6
by Paulm » Wed Feb 08, 2023 5:54 pm
Rating: 33.33%

Hi Guys,

I have been asked to install some cabling in an industrial site.
This is all engineered by an aussie company. Part of the spec is to...

6 Replies

32897 Views

Last post by DougP
Mon Mar 27, 2023 10:43 am
RCD/RCBO where not to use / nuisance tripping

Last post by GLion « Thu Dec 08, 2022 11:20 am
Replies: 2
by GLion » Wed Dec 07, 2022 8:44 pm
Rating: 22.22%

Hi,

I'm going setting up a new install of the following. I'd prefer to have RCBO's on everything. I've run air compressors, skill saws and saw...

2 Replies

18555 Views

Last post by GLion
Thu Dec 08, 2022 11:20 am
Lock dogs for Rotary CB's ?

Last post by MikeNZ « Mon Dec 05, 2022 8:43 pm

by MikeNZ » Mon Dec 05, 2022 8:43 pm

Hi Guys,
May I please ask what you guys are using to lock-out circuits that use the rotary type circuit-breakers.
The type that I'm asking about are...

0 Replies

19127 Views

Last post by MikeNZ
Mon Dec 05, 2022 8:43 pm
PDL breakers

Last post by MikeNZ « Mon Dec 05, 2022 8:28 pm
Replies: 3
by JamesM » Wed Jul 08, 2020 9:23 am
Rating: 11.11%

I came across these old PDL devices that I suspect are MCBs. Can anyone provide any information on them including what range they are from, are they...

3 Replies

22228 Views

Last post by MikeNZ
Mon Dec 05, 2022 8:28 pm
Linking RCDs in 3-phase setup...

Last post by medistat « Tue Aug 09, 2022 9:08 pm
Replies: 6
by medistat » Fri Aug 05, 2022 4:33 pm

Doing a small woodwork shop and putting RCDs on each of the 3 phases at the supply point (it's a sub-board).

Question is do all 3 phases need to be...

6 Replies

32377 Views

Last post by medistat
Tue Aug 09, 2022 9:08 pm
AS/NZS 3000:2007 - 3.4.1 A2

Last post by AlecK « Mon Nov 15, 2021 9:47 am
Replies: 16
by Slovett » Sat Nov 13, 2021 9:45 pm
Rating: 33.33%

Sorry if this has been asked before - AS/NZS 3000:2007 - 3.4.1 A2 says that in domestic installs in NZ, that we must assume that Thermal insulation...

16 Replies

68239 Views

Last post by AlecK
Mon Nov 15, 2021 9:47 am
HRC to MCB discrimination

Last post by AlecK « Sun Nov 14, 2021 9:01 am
Replies: 3
by JamieP » Fri Apr 24, 2020 7:10 pm
Rating: 22.22%

Anyone have much knowledge or experience with doing discrimination studies?

I want to check the discrimination between an 63A gG HRC with downstream...

3 Replies

32368 Views

Last post by AlecK
Sun Nov 14, 2021 9:01 am
Oven replacement - RCD protection of socket outlet?

Last post by JamieP « Sat Nov 13, 2021 7:22 pm
Replies: 7
by JamieP » Sun Aug 08, 2021 9:07 am

I've been asked to replace a wall oven with another

The current oven is directly wired, the customer has asked if possible to add a socket outlet...

7 Replies

36134 Views

Last post by JamieP
Sat Nov 13, 2021 7:22 pm
Can locking of a control circuit be used for isolation?

Last post by JamieP « Mon Oct 25, 2021 7:23 pm
Replies: 5
by JamieP » Sun Oct 24, 2021 5:33 pm

Can a device be provided in a control circuit to enable equipment to be safely worked on because the main circuit can't be engaged, can such be...

5 Replies

29513 Views

Last post by JamieP
Mon Oct 25, 2021 7:23 pm
RCD Feeding RCD discrimination

Last post by AlecK « Sat Sep 25, 2021 10:26 am
Replies: 5
by Energy » Wed Sep 08, 2021 8:44 pm

Hi,

RCD feeding in RCD - discrimination
Can we have a 30ma RCBO acting as an isolator feeding two other 30ma RCBOS(one for lighting circuit and one...

5 Replies

29058 Views

Last post by AlecK
Sat Sep 25, 2021 10:26 am
Fuses in parallel

Last post by JBrtc « Thu Sep 16, 2021 5:30 pm
Replies: 5
by gregmcc » Tue Sep 14, 2021 5:36 pm

So a bit of a technical question,
Keep in mind this is in a WORKS environment not an installation.

Network electrical engineer (I use the word...

5 Replies

27418 Views

Last post by JBrtc
Thu Sep 16, 2021 5:30 pm
2.6.3.1 Exception 3 - Can you apply this to gas appliances?

Last post by AlecK « Sun Jul 18, 2021 12:19 pm
Replies: 3
by JamieP » Sat Jul 17, 2021 8:00 am
Rating: 44.44%

This requirement need not apply to a socket-outlet or a connecting
device specifically for the connection of a fixed or stationary electric
cooking...

3 Replies

20541 Views

Last post by AlecK
Sun Jul 18, 2021 12:19 pm
Minimum of two RCDs when more than one FSC 2.6.2.4 (b) (ii)

Last post by JamieP « Mon Jul 12, 2021 2:10 pm
Replies: 3
by JamieP » Sat Jul 10, 2021 4:56 pm
Rating: 11.11%

What are peoples views in regards to this? Does this apply as a minimum of 2 per switchboard?

As in, 2 FSCs in a subboard require 2 RCDs? Or is this...

3 Replies

21383 Views

Last post by JamieP
Mon Jul 12, 2021 2:10 pm
Clause 2.5.3.3

Last post by AlecK « Mon Mar 29, 2021 9:39 am
Replies: 3
by ElectricalApprentice » Thu Mar 25, 2021 9:28 pm
Rating: 22.22%

Evening all.

Just having a read of clause 2.5.3.3, alternative positioning of overload protection. Would an example of this be a 20A RCBO in a...

3 Replies

21666 Views

Last post by AlecK
Mon Mar 29, 2021 9:39 am
Appendix H3.2.1, AS/NZS 3760:2010

Last post by Spannerz « Sat Mar 27, 2021 6:25 pm
Replies: 2
by Spannerz » Fri Mar 26, 2021 1:51 pm

Hello,

Can anyone confirm, Appendix H3.2.1 (This is probably an already known typo.)

The test may be preformed on a single-phase supply

Should...

2 Replies

18540 Views

Last post by Spannerz
Sat Mar 27, 2021 6:25 pm
Redundant Isolation Switch in combination boards (meter + MSB)

Last post by AlecK « Tue Jan 05, 2021 2:44 pm
Replies: 2
by JamieP » Mon Jan 04, 2021 1:34 pm

Under Orion's network for Christchurch, you are required to provide overload protection for mains and also a isolation device before the meter...

2 Replies

18387 Views

Last post by AlecK
Tue Jan 05, 2021 2:44 pm
Protective device disconnection times

Last post by AlecK « Sat Dec 26, 2020 1:05 pm
Replies: 1
by ElectricalApprentice » Sat Dec 26, 2020 8:48 am
Rating: 44.44%

Merry Christmas everyone.

1.5.5.3 stated that subcircuits supplying fixed equipment, for example a wall oven has a maximum disconnection time of 5...

1 Replies

16043 Views

Last post by AlecK
Sat Dec 26, 2020 1:05 pm
Range Socket Outlet Addition - RCD?

Last post by AlecK « Mon Dec 14, 2020 9:21 am
Replies: 2
by JamieP » Sun Dec 13, 2020 9:33 pm

I have a client who has a range (gas top, electric oven) currently connected via a 15A S/O above the bench top.
He wants it moved down, out of sight...

2 Replies

17830 Views

Last post by AlecK
Mon Dec 14, 2020 9:21 am
Double pole main switch

Last post by AlecK « Fri Nov 20, 2020 5:05 pm
Replies: 1
by Chewbucca428 » Fri Nov 20, 2020 3:11 pm
Rating: 11.11%

Hi there, as an alternative, is there any rules that says I cant combine two single pole 63amp dinrail main switches and mechanically connect them to...

1 Replies

14721 Views

Last post by AlecK
Fri Nov 20, 2020 5:05 pm
Deleted post can't find? Is descrimination of same branch required

Last post by Dan L « Fri Sep 11, 2020 10:16 pm
Replies: 3
by Dan L » Fri Sep 11, 2020 7:17 am

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

3 Replies

31047 Views

Last post by Dan L
Fri Sep 11, 2020 10:16 pm
2.6.3.4 Alterations, additions and repairs

Last post by AlecK « Tue Aug 18, 2020 12:34 pm
Replies: 5
by JamieP » Mon Aug 17, 2020 12:15 pm

Does this come into play when replacing SERFs on a board to plug in MCBs, no alteration of base

I thought about this a bit and thought no, because...

5 Replies

40551 Views

Last post by AlecK
Tue Aug 18, 2020 12:34 pm
MCB's as isolators

Last post by AlecK « Sat Aug 01, 2020 10:51 am
Replies: 4
by Nathan » Fri Jul 31, 2020 8:12 pm

I was recently talking to someone at a trade show regarding having to have a isolator for a hot water cylinder under the current standards.
They had...

4 Replies

38627 Views

Last post by AlecK
Sat Aug 01, 2020 10:51 am

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