Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




122 posts

Master Geek


# 179259 2-Sep-2015 12:58
Send private message

I've installed a small wall mount cabinet high on a wall and believe it should be earthed.

An electrician has run a double power socket which is right next to the cabinet.

Can I earth it using the earth connection from the double socket? Are there any specific requirements on how this should be done?





Filter this topic showing only the reply marked as answer Create new topic
3344 posts

Uber Geek

Trusted
Vocus

  # 1378236 2-Sep-2015 13:31
Send private message

You probably could, but I suspect you are supposed to have an electrician do it.



122 posts

Master Geek


  # 1378240 2-Sep-2015 13:34
Send private message

ubergeeknz: You probably could, but I suspect you are supposed to have an electrician do it.


I'll definitely get an electrician to do it, but want to know how it should be done - the local electrician is not knowledgeable on things like this.

 
 
 
 


3344 posts

Uber Geek

Trusted
Vocus

  # 1378241 2-Sep-2015 13:35
One person supports this post
Send private message

ElectronicFerret:  the local electrician is not knowledgeable on things like this.


That's kind of a worry tbh



122 posts

Master Geek


  # 1378242 2-Sep-2015 13:39
Send private message

Yep. 4-5 years off retirement, not interested in learning about that "internet network stuff" - Happy to be told what needs to be done

2290 posts

Uber Geek

Subscriber

  # 1378244 2-Sep-2015 13:43
Send private message

The door should be bonded to the chassis and the chassis earthed to the switch. 

 

In the last 2 days I've installed new CPE at two brand new homes for the owners at work, in both cases it was pretty clear who ever did the Ethernet runs/cabinet has zero clue what they were doing. It would be nice if they even bothered to label the cable runs!!!

3344 posts

Uber Geek

Trusted
Vocus

  # 1378246 2-Sep-2015 13:46
Send private message

ElectronicFerret: Yep. 4-5 years off retirement, not interested in learning about that "internet network stuff" - Happy to be told what needs to be done


Well it's essentially a metal chassis ... i don't think earthing it is strictly necessary since all the equipment inside should be double-insulated, but it is a good idea from a safety perspective in that *should* any mains short out to it somehow it will trip the RCD and put everyone out of danger.  However, he should know whether it's OK by the regs to connect something like this into the mains earth, or not.  I'd be leaning towards yes, since that's the main purpose of the mains earth after all.

This thread might help too: http://www.electricalforum.co.nz/index.php?action=more_details&id=1373953596


4881 posts

Uber Geek

Trusted

  # 1378249 2-Sep-2015 13:49
One person supports this post
Send private message

Not a sparky, but I believe that if a metal appliance is to be earthed, you're required to run a separate earth wire back to the switch board and NOT to the nearest power point's earth connection.

 
 
 
 




122 posts

Master Geek


  # 1378285 2-Sep-2015 14:27
4 people support this post
Send private message

DarthKermit: Not a sparky, but I believe that if a metal appliance is to be earthed, you're required to run a separate earth wire back to the switch board and NOT to the nearest power point's earth connection.


I've just been in contact with another electrician (who I'll probably use to do the job) who confirmed this.

If the equipment housed in it is double insulated, there is actually no need to earth it at all, but it is recommended that you bond it to a nearby earthed metal object (not a power point earth) such as a steel pillar.

To actually electrically earth the cabinet, it requires a minimum 6mm earth wire run all the way to the switchboard.  It *must* also be colored green and yellow.  There is no requirement to run it inside a conduit.

In my case I'm going to earth it properly right back to the switchboard as the cabinet is feeding wireless equipment including rooftop antennas and I want to make sure static ican't built up.


Hmm, what to write...
1020 posts

Uber Geek

Trusted
Subscriber

  # 1378295 2-Sep-2015 14:37
Send private message

lxsw20: The door should be bonded to the chassis and the chassis earthed to the switch. 

In the last 2 days I've installed new CPE at two brand new homes for the owners at work, in both cases it was pretty clear who ever did the Ethernet runs/cabinet has zero clue what they were doing. It would be nice if they even bothered to label the cable runs!!!


I'm sure I taught you to use a tone source and cable tracing tool...wink




Matthew


Hmm, what to write...
1020 posts

Uber Geek

Trusted
Subscriber

  # 1378297 2-Sep-2015 14:43
Send private message

ElectronicFerret:
DarthKermit: Not a sparky, but I believe that if a metal appliance is to be earthed, you're required to run a separate earth wire back to the switch board and NOT to the nearest power point's earth connection.


I've just been in contact with another electrician (who I'll probably use to do the job) who confirmed this.

If the equipment housed in it is double insulated, there is actually no need to earth it at all, but it is recommended that you bond it to a nearby earthed metal object (not a power point earth) such as a steel pillar.

To actually electrically earth the cabinet, it requires a minimum 6mm earth wire run all the way to the switchboard.  It *must* also be colored green and yellow.  There is no requirement to run it inside a conduit.

In my case I'm going to earth it properly right back to the switchboard as the cabinet is feeding wireless equipment including rooftop antennas and I want to make sure static ican't built up.



Because you are creating a "functional earth" not a "Safety earth" you can just earth it at the nearest plug. This does not come under the definition of "bonding for electrical safety". However because when you make the connection at the plug you are doing more than just replacing a fitting you will need a sparky anyway. So you may as well run 4mm (not 6) back to the board and bond it properly.




Matthew


2290 posts

Uber Geek

Subscriber

  # 1378338 2-Sep-2015 15:10
Send private message

mdooher:
lxsw20: The door should be bonded to the chassis and the chassis earthed to the switch. 

In the last 2 days I've installed new CPE at two brand new homes for the owners at work, in both cases it was pretty clear who ever did the Ethernet runs/cabinet has zero clue what they were doing. It would be nice if they even bothered to label the cable runs!!!


I'm sure I taught you to use a tone source and cable tracing tool...wink


I should get one for the office. Might have to explain to the boss what it is first!

Hmm, what to write...
1020 posts

Uber Geek

Trusted
Subscriber

  # 1378340 2-Sep-2015 15:12
Send private message

lxsw20:
mdooher:
lxsw20: The door should be bonded to the chassis and the chassis earthed to the switch. 

In the last 2 days I've installed new CPE at two brand new homes for the owners at work, in both cases it was pretty clear who ever did the Ethernet runs/cabinet has zero clue what they were doing. It would be nice if they even bothered to label the cable runs!!!


I'm sure I taught you to use a tone source and cable tracing tool...wink


I should get one for the office. Might have to explain to the boss what it is first!


Ahh... office tools... the best kind.




Matthew


Filter this topic showing only the reply marked as answer Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel expands 10th Gen Intel Core Mobile processor family
Posted 23-Aug-2019 10:22


Digital innovation drives new investment provider
Posted 23-Aug-2019 08:29


Catalyst Cloud becomes a Kubernetes Certified Service Provider (KCSP)
Posted 23-Aug-2019 08:21


New AI legaltech product launched in New Zealand
Posted 21-Aug-2019 17:01


Yubico launches first Lightning-compatible security key, the YubiKey 5Ci
Posted 21-Aug-2019 16:46


Disney+ streaming service confirmed launch in New Zealand
Posted 20-Aug-2019 09:29


Industry plan could create a billion dollar interactive games sector
Posted 19-Aug-2019 20:41


Personal cyber insurance a New Zealand first
Posted 19-Aug-2019 20:26


University of Waikato launches space for esports
Posted 19-Aug-2019 20:20


D-Link ANZ expands mydlink ecosystem with new mydlink Mini Wi-Fi Smart Plug
Posted 19-Aug-2019 20:14


Kiwi workers still falling victim to old cyber tricks
Posted 12-Aug-2019 20:47


Lightning Lab GovTech launches 2019 programme
Posted 12-Aug-2019 20:41


Epson launches portable laser projector
Posted 12-Aug-2019 20:27


Huawei launches new distributed HarmonyOS
Posted 12-Aug-2019 20:20


Lenovo introduces single-socket servers for edge and data-intensive workloads
Posted 9-Aug-2019 21:26



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.