Search found 176 matches

by JamieP
Fri Nov 20, 2020 8:42 pm
Forum: Generators and Solar
Topic: Ordinary Duty Flexible Cord for PCE connection
Replies: 1
Views: 37

Ordinary Duty Flexible Cord for PCE connection

Is it suitable to use OD flex for connection from an isolator to inverter 3.9.7.4 leads me to believe that this is installation wiring as it is "(i) Permanently connected flexible cords, including flexible cords used as pendants for socket-outlets and those connected to an installation coupler." and...
by JamieP
Fri Nov 20, 2020 8:00 am
Forum: Selection and Installation of Wiring Systems
Topic: Support & fixing of cables 3.9.3.3
Replies: 7
Views: 108

Re: Support & fixing of cables 3.9.3.3

3.9.3.1 says "Wiring systems shall be supported by suitable means, in accordance with Clause 3.3.2.8. Wiring systems shall be fixed in position, in accordance with this Standard, by suitable clips, saddles or clamps or by means that will not damage the wiring system and that will not be affected by ...
by JamieP
Fri Nov 06, 2020 9:16 pm
Forum: Generators and Solar
Topic: Solar Earth Value
Replies: 9
Views: 139

Re: Solar Earth Value

Thanks Alec, I'll have to have a good read of that to break it down

Appreciate the knowledge as always
by JamieP
Thu Nov 05, 2020 6:53 pm
Forum: Generators and Solar
Topic: Solar Earth Value
Replies: 9
Views: 139

Re: Solar Earth Value

Apologies but I still don't understand how to work out what value is acceptable for the module and rail earthing
by JamieP
Thu Nov 05, 2020 12:39 pm
Forum: Generators and Solar
Topic: Solar Earth Value
Replies: 9
Views: 139

Re: Solar Earth Value

No lightning protection needed in these situations And I understand the value needs to be low enough to operate the device is a suitable time but what I don't know is I have no protective device on th DC side, or is it the inverter? And also I assume the max disconnection time is 5s as per usual? Or...
by JamieP
Wed Nov 04, 2020 9:28 pm
Forum: Generators and Solar
Topic: Solar Earth Value
Replies: 9
Views: 139

Solar Earth Value

I always ensure continuity of my earthing when completed a PV Array as we are required too and my values have always been very low so it's never been a concern but what value should I be looking for? Protective earthing is usually based on the protective device but I'm unsure what that would be in t...
by JamieP
Tue Oct 27, 2020 10:22 am
Forum: Inspection
Topic: Does replacement of a fitting in a medical installation require inspection
Replies: 3
Views: 142

Re: Does replacement of a fitting in a medical installation require inspection

Because ESRs trump standards I'd probably go by the fact that something is only high risk, if it's not low risk and because replacement or maintainence is low risk then I'd assume inspection is not needed by ESRs But I'm not very educated in this area so best to wait until someone who deals with thi...
by JamieP
Tue Oct 27, 2020 10:19 am
Forum: Generators and Solar
Topic: Batteries - How to know whether to apply 3011.1 or 3011.2
Replies: 3
Views: 106

Re: Batteries - How to know whether to apply 3011.1 or 3011.2

I understand 5139 is a "best practice" guide and I do have this But because 3011 is cited by 3000 I wanted to see if any of the information in those standards is relevant to my installation This means I need to buy them but just wanted to get the one relevant to what I'm using but was unsure how to ...
by JamieP
Fri Oct 23, 2020 9:07 pm
Forum: Generators and Solar
Topic: Batteries - How to know whether to apply 3011.1 or 3011.2
Replies: 3
Views: 106

Batteries - How to know whether to apply 3011.1 or 3011.2

Or in other words, how do we know if a battery has vented or sealed cells?

For example I've been asked to install an LG Chem Resu 10 and Im trying to work out what standard to work too but have no idea how to know what type it is. Have looked through the MIs but can't find anything.
by JamieP
Tue Oct 20, 2020 5:56 pm
Forum: Generators and Solar
Topic: Calculating array max voltage 4.2 5033:2012
Replies: 0
Views: 55

Calculating array max voltage 4.2 5033:2012

Just curious what temperatures people use for this? Do you use the lowest ever recorded for a region? Or the average lowest temp etc?

Also where is the best place to get this data?
by JamieP
Tue Oct 20, 2020 6:33 am
Forum: Hazardous Areas
Topic: Who is active in the haz area trade
Replies: 2
Views: 154

Re: Who is active in the haz area trade

Not myself but it's an area I'd love to get into
by JamieP
Mon Oct 19, 2020 12:46 pm
Forum: Generators and Solar
Topic: Lockable main switch at switchboard connection - 4777.1 2005
Replies: 7
Views: 181

Re: Lockable main switch at switchboard connection - 4777.1 2005

Thank you for the input But it didn't answer wether the highlighted statement above applied to the solar or normal supply main switch I understand the solar supply main switch must be lockable but what I need to know is if I connect to an old main switchboard, do I need to upgrade the normal supply ...
by JamieP
Sat Oct 17, 2020 5:24 pm
Forum: Generators and Solar
Topic: Lockable main switch at switchboard connection - 4777.1 2005
Replies: 7
Views: 181

Re: Lockable main switch at switchboard connection - 4777.1 2005

Interesting, I always thought it meant the normal supply main switch

Not the solar supply

To me it reads the first sentence there is about the normal supply then the rest is about the solar supply
by JamieP
Sat Oct 17, 2020 9:23 am
Forum: Generators and Solar
Topic: Lockable main switch at switchboard connection - 4777.1 2005
Replies: 7
Views: 181

Lockable main switch at switchboard connection - 4777.1 2005

Screenshot_20201017-091911_Drive.jpg The switchboard we connect the inverter or PCE to must have a main switch that is lockable How can we comply with this when we connect to a distribution board that is not the main switchboard and doesn't contain a main switch? Do we simply add a single isolating...
by JamieP
Thu Oct 15, 2020 6:20 am
Forum: Selection and Installation of Wiring Systems
Topic: Old unknown cable
Replies: 10
Views: 291

Re: Old unknown cable

I was going to say if the 75°c insulation temp limit played any part as it says anything lower that is not suitable for NZ or Aus conditions but noticed this is actually just for Polymeric cables, doesn't have a restrictions on anything else

3.4.2

Anyhow, very informative read this one
by JamieP
Tue Oct 13, 2020 10:11 pm
Forum: Distribution, Networks & Metering
Topic: Domestic or Commercial? How to tell
Replies: 3
Views: 130

Re: Domestic or Commercial? How to tell

I remembered in the past someone saying something about it being to do the way the site or PoS or something was registered with the network but I could just be making things up For example if I do in install on a large farm shed that has no domestic purpose what so ever but said shed is fed from a d...
by JamieP
Mon Oct 12, 2020 9:35 pm
Forum: Distribution, Networks & Metering
Topic: Domestic or Commercial? How to tell
Replies: 3
Views: 130

Domestic or Commercial? How to tell

Certain sites it's hard to know if they should be treated as domestic or commercial, some have parts that could be considered each. How do we know what rules to apply where in such situations? Main reason bringing this to mind is PV installation voltage limit, which is 600V for domestic but can appl...
by JamieP
Mon Oct 12, 2020 9:31 pm
Forum: Selection and Installation of Wiring Systems
Topic: Triple Plating an Isolator
Replies: 3
Views: 127

Re: Triple Plating an Isolator

The feed runs direct to the location of the device

Just the active is run from this location and back through the switching device

With the switch off the feeding conductors are still live in the device
by JamieP
Mon Oct 12, 2020 7:15 pm
Forum: Generators and Solar
Topic: Solar Smart Meters Location
Replies: 3
Views: 120

Re: Solar Smart Meters Location

Apologies, the smart meter talks to the inverter and they are connected via data cable So yes this isn't really a PV issue as it's more to do with the inverter and consumer mains/main switch of the installation The main switch I'm referring to is the installation main switch not the solar main switch
by JamieP
Sun Oct 11, 2020 4:38 pm
Forum: Selection and Installation of Wiring Systems
Topic: 3.9.8.4 (b) Segregation
Replies: 1
Views: 72

3.9.8.4 (b) Segregation

"separation of distributed gas and water systems"

What does this mean?

Does this include things such as heat pump pipes?

Does this include water drainpipes and such like on the exterior of a building?

Or is this only pipes that actually supply water and gas?
by JamieP
Sun Oct 11, 2020 4:34 pm
Forum: Selection and Installation of Wiring Systems
Topic: Triple Plating an Isolator
Replies: 3
Views: 127

Triple Plating an Isolator

Just for arguments sake because I'm pretty damn certain this is absolutely not ok because it defeats the wholesaler purpose of a device for isolation by still having live parts in the device after the isolator is off but I have a number of people arguing it's ok So, what's your opinion? Is this ok? ...
by JamieP
Sun Oct 11, 2020 3:32 pm
Forum: Generators and Solar
Topic: Solar Smart Meters Location
Replies: 3
Views: 120

Solar Smart Meters Location

I've been needing to install more and more smart meters in conjunction with inverters for better monitoring of PV systems. My question is can such a product be installed before before the main switch of the installation? I have done so in the past looking at some of the exceptions in 3000 2.3.3.1 bu...
by JamieP
Sun Oct 11, 2020 2:57 pm
Forum: Generators and Solar
Topic: DC Switch Disconnector for PV system
Replies: 3
Views: 125

Re: DC Switch Disconnector for PV system

Just had a better look over things and compared the standards and also looked at the declaration, 2012 doesn't have option C that the inverter complies with so it definitely needs an external DC switch-disconnector in compliance with 4.4.1.2 (a) until we finally cited 2014 in regulation
by JamieP
Sun Oct 11, 2020 2:32 pm
Forum: Generators and Solar
Topic: DC Switch Disconnector for PV system
Replies: 3
Views: 125

Re: DC Switch Disconnector for PV system

You sound more correct. 2014 may be a better document but as you say, it's not cited by regulations so it's the 2012 one we must go by. 2014 may have better information to go from and may be used as a "best practice" but only if any of it's requirements don't directly conflict with the 2012 cited do...
by JamieP
Wed Sep 30, 2020 8:41 am
Forum: Generators and Solar
Topic: Earth wire type for PV Array
Replies: 4
Views: 172

Re: Earth wire type for PV Array

This is true! I'm going to throw some promo up on the Electricians Community NZ facebook page to remind people of the wealth of knowledge in here, I definitely prefer the forum I wish more people did
by JamieP
Tue Sep 29, 2020 6:53 pm
Forum: Generators and Solar
Topic: Earth wire type for PV Array
Replies: 4
Views: 172

Re: Earth wire type for PV Array

Exactly my thinking, appreciate the input

Feels like it's just you and me around here these days Alec haha hopefully not boring you too much
by JamieP
Tue Sep 29, 2020 6:46 pm
Forum: Generators and Solar
Topic: PCE Earth Connection
Replies: 2
Views: 98

Re: PCE Earth Connection

Ah, thank you, I had missed that it was a should but regardless good to know
by JamieP
Tue Sep 29, 2020 1:40 pm
Forum: Generators and Solar
Topic: Earth wire type for PV Array
Replies: 4
Views: 172

Earth wire type for PV Array

5033 2012 4.4.2.3 says "All PV array protective equipotential bonding conductors shall comply with the material, type, insulation, identification, installation and connection requirements specified in AS/NZS 3000, Section 5." 4.3.6.2 details type of cables used in array I always thought 4.3.6.2 appl...
by JamieP
Tue Sep 29, 2020 1:33 pm
Forum: Generators and Solar
Topic: PCE Earth Connection
Replies: 2
Views: 98

PCE Earth Connection

Screenshot_20200929-132857_Drive.jpg
Is connecting to the earth bar compliant? Or must I physically connect to the main earth?

If the latter, what's the best device to use? Or is terminating into the same tunnel terminal or lug as the main earth sufficient/compliant?
by JamieP
Tue Sep 29, 2020 8:23 am
Forum: Generators and Solar
Topic: Connection of PV exposed conductive parts
Replies: 5
Views: 233

Re: Connection of PV exposed conductive parts

Further question, is the method of connecting to the PCE earth only permissable when it is for bonding? The clause indicates in the first line this method is only permitted when for bonding only. If it is for earthing does it have to go all the way back to the earth bar via PCE? This would mean this...
by JamieP
Mon Sep 28, 2020 4:16 pm
Forum: Generators and Solar
Topic: DC Voltage Drop
Replies: 5
Views: 164

Re: DC Voltage Drop

If I'm using worst case scenario shouldn't the voltage I use to calculate my allowed Vd be the lowest voltage that could be present and not Voc? So that it would give me the smallest value of Vd allowed for such array?
by JamieP
Mon Sep 28, 2020 10:11 am
Forum: Generators and Solar
Topic: DC Voltage Drop
Replies: 5
Views: 164

Re: DC Voltage Drop

I had more of a look through 3008 and actually saw that 4.3.1 is probably of better use, replacing Zc with Rc due to DC having no reactance I'm assuming I'd use 4.3.2 for a two wire supply and probably Vd = I * L * (2Rc) / 1000 And table 37 (with the note stating a 1.01 factor for tinned) Does this ...
by JamieP
Sun Sep 27, 2020 4:08 pm
Forum: Generators and Solar
Topic: DC Voltage Drop
Replies: 5
Views: 164

DC Voltage Drop

Vd = I * L * Vc / 1000

5033 4.3.6.1 says to use 3008 for current carrying capacity but I'm just wondering if we can use the same for Vd

Basically I just want to know what table to use to obtain Vc values for DC runs
by JamieP
Thu Sep 24, 2020 7:07 pm
Forum: Generators and Solar
Topic: Inverter AC isolator
Replies: 6
Views: 209

Re: Inverter AC isolator

Yeah it's such a pain really, so many standards have new versions now but we are stuck working on the old ones, oh well, just the way it is isn't it. I think more the issue is people not even knowing how to know which ones to use

Any how thanks for the input as always Alec, much appreciated
by JamieP
Thu Sep 24, 2020 1:02 pm
Forum: Generators and Solar
Topic: Inverter AC isolator
Replies: 6
Views: 209

Re: Inverter AC isolator

This is what I was thinking, very interesting because I've always been taught that it was needed

4777.1 2016 does call for an additional one near inverter unless the inverter is adjacent to the switchboard it's connecting too so I wonder if it's a case of people reading this instead
by JamieP
Thu Sep 24, 2020 10:32 am
Forum: Generators and Solar
Topic: Inverter AC isolator
Replies: 6
Views: 209

Re: Inverter AC isolator

Yes I agree

More what I was asking is under current rules is there also a requirement for an additional isolator adjacent to the inverter as well as the solar mcb/isolator
by JamieP
Wed Sep 23, 2020 9:04 pm
Forum: Generators and Solar
Topic: Inverter AC isolator
Replies: 6
Views: 209

Inverter AC isolator

Now, I've always installed these and was always under the impression I had to but actually looking now I'm not 100% sure if it's actually required for compliance Looking at the 2016 version of 4777.1, it's most definitely needed unless the inverter is adjacent to the switchboard it's connected to (c...
by JamieP
Wed Sep 23, 2020 8:41 pm
Forum: Generators and Solar
Topic: Solar Conduit Labelling
Replies: 3
Views: 165

Re: Solar Conduit Labelling

Interesting, I see your points I don't know if I agree with generally external though, every company I've worked with has always done internal runs in the roof space My main issue is a lot of the stuff we use doesn't have the word solar at very good intervals so when cutting pieces and such the word...
by JamieP
Sun Sep 20, 2020 2:38 pm
Forum: Generators and Solar
Topic: Solar Conduit Labelling
Replies: 3
Views: 165

Solar Conduit Labelling

I'm just curious of opinions here 5033 2012 5.3.1 "When conduit or other wiring enclosure is used, the wiring enclosure shall be labelled ‘SOLAR’ on the exterior surface of the enclosure at each end of the enclosure and at each change in direction." 2014 makes this needed every 2m My question is is ...
by JamieP
Mon Sep 14, 2020 10:37 am
Forum: Generators and Solar
Topic: Connection of PV exposed conductive parts
Replies: 5
Views: 233

Re: Connection of PV exposed conductive parts

Sorry, 5033:2012
by JamieP
Sun Sep 13, 2020 8:32 pm
Forum: Generators and Solar
Topic: Connection of PV exposed conductive parts
Replies: 5
Views: 233

Connection of PV exposed conductive parts

The bottom of 4.4.2.2 says "If the earthing is for bonding requirements only then the array earth may be connected to the installation earth via the PCE protective earth so long as removing the inverter for maintenance: (i) does not remove the earth connection; and (ii) provided the PCE protective e...
by JamieP
Thu Aug 27, 2020 7:15 pm
Forum: Testing & Verification
Topic: Earth continuity testing on long runs
Replies: 8
Views: 409

Re: Earth continuity testing on long runs

I remember thinking that if I can a value higher than table 8.2 it was a fail but infact as you say it's just guidance of a value that should mean the device will trip in the required 0.4s trip time but correct me if I'm wrong, due to only socket outlets having to trip in 0.4s then the values could ...
by JamieP
Wed Aug 26, 2020 7:34 pm
Forum: Testing & Verification
Topic: Earth continuity testing on long runs
Replies: 8
Views: 409

Re: Earth continuity testing on long runs

Thank you, I'll have to have a look at doing this when needed, usually my lead is fine but I have run into a few situations where it wasn't really suitable and used a N-E loop and the value was low enough hence E had to be fine but it just got me thinking about what the best way to go about in these...
by JamieP
Wed Aug 26, 2020 1:55 pm
Forum: Testing & Verification
Topic: Earth continuity testing on long runs
Replies: 8
Views: 409

Earth continuity testing on long runs

I normally use a trailing lead to test EC with the N or MEN disconnected although on long runs this can become difficult due to route or length, this confirms the EC value and also the E is in the correct position I'm just curious what people believe is the most reliable and safe way for dealing wit...
by JamieP
Tue Aug 25, 2020 6:26 am
Forum: Selection and Installation of Wiring Systems
Topic: Ordinary Duty Flexible Cord for ELV
Replies: 5
Views: 329

Re: Ordinary Duty Flexible Cord for ELV

Yeah, I've seen you mention this a few times and it makes sense. I just wasn't sure if 7.5.11.1 meant that 3.9.7.4 didn't need to be applied for ELV systems
by JamieP
Mon Aug 24, 2020 3:53 pm
Forum: Selection and Installation of Wiring Systems
Topic: Ordinary Duty Flexible Cord for ELV
Replies: 5
Views: 329

Re: Ordinary Duty Flexible Cord for ELV

Apologies, as you said above and I agree 3.9.7.4 indicates HD flex only regardless of ELV or not 3.10.1.1 exception (e) indicates insulated unsheathed is suitable for EL So that's what got me thinking However, I've also seen 7.5.11.1 but that clause isn't very specific in what it does and doesn't ov...
by JamieP
Sun Aug 23, 2020 5:15 pm
Forum: Earthing and Bonding
Topic: Earthing an Awning
Replies: 7
Views: 380

Re: Earthing an Awning

I'm making assumptions here but I'm thinking the awning probably needs earthing and not bonding but feel free to correct me If this is the case you can go as small as a 2.5mm2 earth depending on size of active conductors that pose a risk Is it the downlights in the awning that present a risk? How ar...
by JamieP
Sat Aug 22, 2020 3:40 pm
Forum: Selection and Installation of Wiring Systems
Topic: Ordinary Duty Flexible Cord for ELV
Replies: 5
Views: 329

Ordinary Duty Flexible Cord for ELV

Is ordinary duty flexible cord suitable for ELV without an additional enclosure? Just curious because of the fact that single insulation is suitable for ELV but it appears that ordinary duty flexible cord isn't suitable for installation wiring without an additional enclosure This would make me think...
by JamieP
Tue Aug 18, 2020 7:55 am
Forum: Protective Devices
Topic: 2.6.3.4 Alterations, additions and repairs
Replies: 5
Views: 313

Re: 2.6.3.4 Alterations, additions and repairs

Oh, I think I've gotten mixed up with something else

I thought replacing a fitting with another fitting was low risk and didn't require compliance with 3000 or have I gotten myself confused up with something else
by JamieP
Tue Aug 18, 2020 7:30 am
Forum: Appliances
Topic: 4.4.2.1 Accessablity of Socket Outlet
Replies: 13
Views: 725

Re: 4.4.2.1 Accessablity of Socket Outlet

(i) was what I was referring to, I've just seen many people use this argument against it so was just curious of your thoughts