Search found 18 matches

by Tiger
Sat Apr 15, 2023 10:02 pm
Forum: Earthing and Bonding
Topic: shape of horizontal earth electrode and distance between two main earth electrode
Replies: 4
Views: 2778

shape of horizontal earth electrode and distance between two main earth electrode

Hi Guys, New townhouses built on volcanic rock. There is no chance for Vertical earth electrode. Can only try Hotizontal eletrode, normally, 7.5m long naked 25mm2 CU. The questions are: 1. is there any restriction on the shape of laid 7.5m naked 25mm2 Cu? I did not see any information in the reg. Gi...
by Tiger
Fri Apr 07, 2023 12:31 am
Forum: Electric Vehicles and Charging Systems
Topic: Tesla Gen.3 Wall Charger
Replies: 9
Views: 5195

Re: Tesla Gen.3 Wall Charger

Thank you, Alec, for all the information. my understanding to this, "RCD protection at the load end of the circuit - it has to be at origin" is trying to protect people when getting electric shock from the non-Rcd protected circuit from switchboard to the load. But in many cases, the Tesla Gen3 char...
by Tiger
Fri May 13, 2022 10:09 am
Forum: Distribution, Networks & Metering
Topic: How to become a meter installer in Auckland?
Replies: 4
Views: 3743

Re: How to become a meter installer in Auckland?

Thank you for the information, Greg. I will search for more information.
by Tiger
Thu May 12, 2022 5:42 pm
Forum: Distribution, Networks & Metering
Topic: How to become a meter installer in Auckland?
Replies: 4
Views: 3743

Re: How to become a meter installer in Auckland?

thank you, AlecK. I guess I have to find out the best contacts for both.
by Tiger
Wed May 11, 2022 11:31 am
Forum: Distribution, Networks & Metering
Topic: How to become a meter installer in Auckland?
Replies: 4
Views: 3743

How to become a meter installer in Auckland?

Hi Guys,

I have been a registered electrician for more than three years based in Auckland and would like to be a meter installer, i.e,install the new meter for new house and connect the power in the pit. Can anyone tell me the pathways to become a meter installer?

Thanks in advance.

Regards,
Tiger
by Tiger
Thu Sep 30, 2021 12:24 pm
Forum: Generators and Solar
Topic: Switchboard for Generator with RCBO
Replies: 2
Views: 3040

Re: Switchboard for Generator with RCBO

Thank you, Aleck! Really appreciate! Assuming domestic, or otherwise following part 2, then ESR 60 requires a standalone power system to comply with "4509.1". Which requires setting up a main earthing system for the installation, including a MEN within the installation's MSB (not within the genset /...
by Tiger
Tue Sep 28, 2021 11:50 pm
Forum: Generators and Solar
Topic: Switchboard for Generator with RCBO
Replies: 2
Views: 3040

Switchboard for Generator with RCBO

Hi Everyone, I am asked to do a switchboard for the a Hyundai Generator as per attached plate photo. It is not connected to the grid and will not be. The problem is the main switch in the generator is actually a RCBO which means I cannot really make my switchboard as MEN switchboard as it will trip ...
by Tiger
Mon May 03, 2021 9:40 pm
Forum: Selection and Installation of Wiring Systems
Topic: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
Replies: 8
Views: 3972

Re: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables

Hi Aleck, yes, for good practice, I always use HD conduit for the underground cable. But I have been told by someone that it is common to have unenclosed cables in the bedding of gap 7 which I do not think it is good pratice especially when the cables are buried under driveway. By the way, Marley pr...
by Tiger
Wed Apr 28, 2021 10:06 pm
Forum: Selection and Installation of Wiring Systems
Topic: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
Replies: 8
Views: 3972

Re: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables

Hi AlecK, Thanks for your information. I google "quarry dust" and find Gap 7 is also known as Crusher Dust or Quarry dust. https://www.captaincompost.co.nz/shop/Driveways++Landscape+Projects/Crusher+Dust.html So in this way, I would assume gap 7 is widely used as bedding materials. Thank you, again....
by Tiger
Wed Apr 28, 2021 10:01 pm
Forum: Selection and Installation of Wiring Systems
Topic: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
Replies: 8
Views: 3972

Re: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables

Thank you, Jamie. That is reason why I ask here to see if any one have experiences with this. Normally Gap 7 are used as bedding material for waste pipes. I just wonder can the materials be used for mains cable as well. Is it sand or friable soil? Is it free from sharp stone? If yes, then it's compl...
by Tiger
Tue Apr 27, 2021 9:12 pm
Forum: Selection and Installation of Wiring Systems
Topic: Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables
Replies: 8
Views: 3972

Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables

Hi Everyone, Just wondering is it acceptable to have Sap 7 or Gap 7 as the bedding materials for Underground unenclosed cables ? 3.11.4.2 Unenclosed cables Any Category A or Category B wiring system that comprises cables not installed in a wiring enclosure shall be laid on a bed of not less than 50 ...
by Tiger
Sat Oct 03, 2020 12:23 am
Forum: Earthing and Bonding
Topic: Bonding Pool and Spa / Bonding Stainless Steel Shower Tray
Replies: 3
Views: 3396

Re: Bonding Pool and Spa / Bonding Stainless Steel Shower Tray

Thank you very much for the very fast reply, Doug! Just three more questions from your reply: 1. Bonding conductor normally shall have a cross-sectional area not less than 4 mm2, which means the common powerpoint cable, 2 x 2.5mm2 + E, are not suitable for the use to connect as bonding conductor. I ...
by Tiger
Thu Oct 01, 2020 11:39 pm
Forum: Earthing and Bonding
Topic: Bonding Pool and Spa / Bonding Stainless Steel Shower Tray
Replies: 3
Views: 3396

Bonding Pool and Spa / Bonding Stainless Steel Shower Tray

Hi Everyone, I am asked to quote for a second dwelling in the back yard. When I visit the site today and find hat one pool with spa is in building as well and the foundation has been done(but the concrete for the brick wall has not been done yet). Well, my understanding is that the reinforcing mesh ...
by Tiger
Fri Jun 05, 2020 12:03 am
Forum: Inspection
Topic: Inspectors course/exam
Replies: 2
Views: 1964

Re: Inspectors course/exam

Hi Dave, as far as I know, the inspector exam changed to the computer based Aspeq exam since November 2018. I took the exam and found it was good to get familiar with the index which could help you find the answers quickly...
by Tiger
Mon May 25, 2020 11:26 pm
Forum: Selection and Installation of Wiring Systems
Topic: Add new kitchen with Electric Hob & Oven and exceed Max Demand
Replies: 7
Views: 4320

Re: Add new kitchen with Electric Hob & Oven and exceed Max Demand

Mazdaman wrote:
Mon May 25, 2020 8:59 pm
Are they able to consider gas hobs? And night rate only hot water?
Well I think they have to think the option now. Otherwise, either I do not quote the job or they are ok to have a interlock device between the 1st Hob & Oven and 2nd Hob & Oven.
by Tiger
Mon May 25, 2020 11:22 pm
Forum: Selection and Installation of Wiring Systems
Topic: Add new kitchen with Electric Hob & Oven and exceed Max Demand
Replies: 7
Views: 4320

Re: Add new kitchen with Electric Hob & Oven and exceed Max Demand

The Q&D way would be to adopt max-demand-by-limitation. But you still need to be confident that that the actual loads will never be enough to cause excessive volt drop; let alone take out the supply fuse ------------ Using calculation (Table C1) you need to move from column 2 to column 3 (2 living ...
by Tiger
Mon May 25, 2020 11:44 am
Forum: Selection and Installation of Wiring Systems
Topic: Add new kitchen with Electric Hob & Oven and exceed Max Demand
Replies: 7
Views: 4320

Add new kitchen with Electric Hob & Oven and exceed Max Demand

Hi Everyone, We have a client who is going to build two more bedrooms and one more kitchen to the existing house. It is not sleepout or outbuilding but together with the existing house. They want to have Electric Hob & Oven in the second kitchen as the existing one. We had a rough calculation on the...
by Tiger
Wed Apr 22, 2020 4:20 pm
Forum: Welcome to the NZ's Electrical Forum
Topic: Searching from the OLD Electrical Forum
Replies: 3
Views: 4713

Re: Searching from the OLD Electrical Forum

I tried and it works! Thank you, Doug! :)